About the Execution of 2025-gold for FunctionPointer-PT-b032
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 7850.092 | 3600000.00 | 4388963.00 | 8173.20 | ? ? ? 0 ? 0 1 inf 32 0 32 ? 0 ? ? inf | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2026-input.r159-tall-177961079800012.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is FunctionPointer-PT-b032, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r159-tall-177961079800012
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 792K
-rw-r--r-- 1 mcc users 6.3K Mar 7 07:27 CTLCardinality.txt
-rw-r--r-- 1 mcc users 62K Mar 7 07:27 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.8K Mar 7 07:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 52K Mar 7 07:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 15 10:24 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 15 10:24 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 15 10:24 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 15 10:24 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Mar 7 07:27 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 113K Mar 7 07:27 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.9K Mar 7 07:27 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 54K Mar 7 07:27 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:24 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 10:24 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 391K Mar 3 18:30 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of positive values
NUM_VECTOR
echo here is the order used to build the result vector(from xml file)
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-00
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-01
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-02
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-03
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-04
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-05
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-06
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-07
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-08
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-09
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-10
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-11
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-12
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-13
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-14
FORMULA_NAME FunctionPointer-PT-b032-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1779703465819
Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FunctionPointer-PT-b032
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 10:04:27] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-25 10:04:27] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 10:04:27] [INFO ] Load time of PNML (sax parser for PT used): 146 ms
[2026-05-25 10:04:27] [INFO ] Transformed 306 places.
[2026-05-25 10:04:27] [INFO ] Transformed 840 transitions.
[2026-05-25 10:04:27] [INFO ] Parsed PT model containing 306 places and 840 transitions and 3392 arcs in 244 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 6 ms.
Deduced a syphon composed of 84 places in 8 ms
Reduce places removed 84 places and 192 transitions.
FORMULA FunctionPointer-PT-b032-UpperBounds-03 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b032-UpperBounds-05 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b032-UpperBounds-09 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b032-UpperBounds-12 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:04:27] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
// Phase 1: matrix 414 rows 222 cols
[2026-05-25 10:04:27] [INFO ] Computed 4 invariants in 31 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, 1, +inf, 32, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 10006 steps (8 resets) in 54 ms. (181 steps per ms)
FORMULA FunctionPointer-PT-b032-UpperBounds-10 32 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FunctionPointer-PT-b032-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 100010 steps (54 resets) in 135 ms. (735 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 5, 2, 6, 2, 10, 17, 5, 20, 5] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:04:27] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
[2026-05-25 10:04:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:28] [INFO ] [Real]Absence check using 3 positive place invariants in 11 ms returned sat
[2026-05-25 10:04:28] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:28] [INFO ] [Real]Absence check using state equation in 338 ms returned sat
[2026-05-25 10:04:28] [INFO ] State equation strengthened by 65 read => feed constraints.
[2026-05-25 10:04:28] [INFO ] [Real]Added 65 Read/Feed constraints in 39 ms returned sat
[2026-05-25 10:04:28] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:28] [INFO ] [Nat]Absence check using 3 positive place invariants in 32 ms returned sat
[2026-05-25 10:04:28] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 32 ms returned sat
[2026-05-25 10:04:29] [INFO ] [Nat]Absence check using state equation in 631 ms returned sat
[2026-05-25 10:04:29] [INFO ] [Nat]Added 65 Read/Feed constraints in 15 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:04:29] [INFO ] Deduced a trap composed of 21 places in 204 ms of which 8 ms to minimize.
[2026-05-25 10:04:29] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 292 ms
[2026-05-25 10:04:29] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 103 ms.
[2026-05-25 10:04:30] [INFO ] Added : 1 causal constraints over 1 iterations in 233 ms. Result :sat
Minimization took 90 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:30] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Real]Absence check using state equation in 81 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:04:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:30] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Nat]Absence check using state equation in 74 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:04:30] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 40 ms.
[2026-05-25 10:04:30] [INFO ] Added : 2 causal constraints over 1 iterations in 102 ms. Result :sat
Minimization took 75 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:30] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Real]Absence check using state equation in 91 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:04:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:30] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:30] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Nat]Absence check using state equation in 94 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Nat]Added 65 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:04:31] [INFO ] Deduced a trap composed of 21 places in 91 ms of which 6 ms to minimize.
[2026-05-25 10:04:31] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 113 ms
[2026-05-25 10:04:31] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 36 ms.
[2026-05-25 10:04:31] [INFO ] Added : 2 causal constraints over 1 iterations in 78 ms. Result :sat
Minimization took 78 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:31] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Real]Absence check using state equation in 90 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Real]Added 65 Read/Feed constraints in 15 ms returned sat
[2026-05-25 10:04:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:31] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Nat]Absence check using state equation in 68 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:04:31] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 36 ms.
[2026-05-25 10:04:31] [INFO ] Added : 1 causal constraints over 1 iterations in 81 ms. Result :sat
Minimization took 79 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:31] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:04:31] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Real]Absence check using state equation in 79 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:04:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:32] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Nat]Absence check using state equation in 72 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:04:32] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 36 ms.
[2026-05-25 10:04:32] [INFO ] Added : 1 causal constraints over 1 iterations in 78 ms. Result :sat
Minimization took 80 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:32] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Real]Absence check using state equation in 68 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Real]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:04:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:32] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Nat]Absence check using state equation in 84 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Nat]Added 65 Read/Feed constraints in 22 ms returned sat
[2026-05-25 10:04:32] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 32 ms.
[2026-05-25 10:04:32] [INFO ] Added : 3 causal constraints over 1 iterations in 92 ms. Result :sat
Minimization took 139 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:32] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:32] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Real]Absence check using state equation in 81 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Real]Added 65 Read/Feed constraints in 13 ms returned sat
[2026-05-25 10:04:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:33] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Nat]Absence check using state equation in 79 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:04:33] [INFO ] Deduced a trap composed of 21 places in 124 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:04:33] [INFO ] Deduced a trap composed of 21 places in 98 ms of which 5 ms to minimize.
[2026-05-25 10:04:33] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 254 ms
[2026-05-25 10:04:33] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 28 ms.
[2026-05-25 10:04:33] [INFO ] Added : 2 causal constraints over 1 iterations in 68 ms. Result :sat
Minimization took 88 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:33] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Real]Absence check using state equation in 76 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:04:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:33] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Nat]Absence check using state equation in 80 ms returned sat
[2026-05-25 10:04:33] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:04:33] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 28 ms.
[2026-05-25 10:04:34] [INFO ] Added : 1 causal constraints over 1 iterations in 70 ms. Result :sat
Minimization took 78 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:34] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Real]Absence check using state equation in 76 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Real]Added 65 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:04:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Nat]Absence check using state equation in 79 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:04:34] [INFO ] Deduced a trap composed of 21 places in 127 ms of which 6 ms to minimize.
[2026-05-25 10:04:34] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 152 ms
[2026-05-25 10:04:34] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 24 ms.
[2026-05-25 10:04:34] [INFO ] Added : 1 causal constraints over 1 iterations in 62 ms. Result :sat
Minimization took 73 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:34] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Real]Absence check using state equation in 75 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Real]Added 65 Read/Feed constraints in 13 ms returned sat
[2026-05-25 10:04:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:04:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Nat]Absence check using state equation in 78 ms returned sat
[2026-05-25 10:04:34] [INFO ] [Nat]Added 65 Read/Feed constraints in 14 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:04:35] [INFO ] Deduced a trap composed of 21 places in 106 ms of which 7 ms to minimize.
[2026-05-25 10:04:35] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 128 ms
[2026-05-25 10:04:35] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 21 ms.
[2026-05-25 10:04:35] [INFO ] Added : 2 causal constraints over 1 iterations in 62 ms. Result :sat
Minimization took 74 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 5, 2, 6, 2, 10, 17, 5, 20, 5] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 5, 2, 6, 2, 10, 17, 5, 20, 5] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 222 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 222/222 places, 648/648 transitions.
Graph (complete) has 932 edges and 222 vertex of which 191 are kept as prefixes of interest. Removing 31 places using SCC suffix rule.2 ms
Discarding 31 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 42 transitions
Reduce isomorphic transitions removed 42 transitions.
Iterating post reduction 0 with 42 rules applied. Total rules applied 43 place count 191 transition count 606
Discarding 25 places :
Symmetric choice reduction at 1 with 25 rule applications. Total rules 68 place count 166 transition count 464
Iterating global reduction 1 with 25 rules applied. Total rules applied 93 place count 166 transition count 464
Ensure Unique test removed 32 transitions
Reduce isomorphic transitions removed 32 transitions.
Iterating post reduction 1 with 32 rules applied. Total rules applied 125 place count 166 transition count 432
Discarding 15 places :
Symmetric choice reduction at 2 with 15 rule applications. Total rules 140 place count 151 transition count 402
Iterating global reduction 2 with 15 rules applied. Total rules applied 155 place count 151 transition count 402
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 2 with 8 rules applied. Total rules applied 163 place count 151 transition count 394
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 169 place count 145 transition count 382
Iterating global reduction 3 with 6 rules applied. Total rules applied 175 place count 145 transition count 382
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 181 place count 139 transition count 358
Iterating global reduction 3 with 6 rules applied. Total rules applied 187 place count 139 transition count 358
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 193 place count 133 transition count 346
Iterating global reduction 3 with 6 rules applied. Total rules applied 199 place count 133 transition count 346
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 204 place count 128 transition count 326
Iterating global reduction 3 with 5 rules applied. Total rules applied 209 place count 128 transition count 326
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 214 place count 123 transition count 306
Iterating global reduction 3 with 5 rules applied. Total rules applied 219 place count 123 transition count 306
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 224 place count 118 transition count 296
Iterating global reduction 3 with 5 rules applied. Total rules applied 229 place count 118 transition count 296
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 234 place count 113 transition count 286
Iterating global reduction 3 with 5 rules applied. Total rules applied 239 place count 113 transition count 286
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 244 place count 108 transition count 276
Iterating global reduction 3 with 5 rules applied. Total rules applied 249 place count 108 transition count 276
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 254 place count 103 transition count 266
Iterating global reduction 3 with 5 rules applied. Total rules applied 259 place count 103 transition count 266
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 261 place count 101 transition count 262
Iterating global reduction 3 with 2 rules applied. Total rules applied 263 place count 101 transition count 262
Drop transitions (Redundant composition of simpler transitions.) removed 6 transitions
Redundant transition composition rules discarded 6 transitions
Iterating global reduction 3 with 6 rules applied. Total rules applied 269 place count 101 transition count 256
Applied a total of 269 rules in 122 ms. Remains 101 /222 variables (removed 121) and now considering 256/648 (removed 392) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 128 ms. Remains : 101/222 places, 256/648 transitions.
[2026-05-25 10:04:35] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 19 resets, run finished after 79 ms. (steps per millisecond=126 ) properties (out of 10) seen :[3, 2, 3, 5, 6, 4, 3, 8, 2, 2]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 5, 3, 6, 6, 10, 17, 8, 20, 5] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:04:35] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
// Phase 1: matrix 166 rows 101 cols
[2026-05-25 10:04:35] [INFO ] Computed 2 invariants in 7 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 5, 3, 6, 6, 10, 17, 8, 20, 5] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1714 ms. (583 steps per ms)
BEST_FIRST walk for 10000009 steps (83 resets) in 7663 ms. (1304 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[408, 164, 262, 1755, 194, 10, 25, 1779, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:04:45] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:04:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:04:45] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:04:45] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:04:45] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 16 ms.
[2026-05-25 10:04:45] [INFO ] Added : 6 causal constraints over 3 iterations in 60 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:45] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 16 ms.
[2026-05-25 10:04:45] [INFO ] Added : 19 causal constraints over 5 iterations in 74 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Added 30 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:04:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:45] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:04:45] [INFO ] Added : 12 causal constraints over 3 iterations in 69 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:04:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:04:46] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:04:46] [INFO ] Added : 4 causal constraints over 2 iterations in 40 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:46] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:04:46] [INFO ] Added : 9 causal constraints over 3 iterations in 47 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:46] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:04:46] [INFO ] Added : 1 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:04:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:04:46] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:04:46] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:04:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:04:46] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:04:46] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:04:46] [INFO ] Added : 13 causal constraints over 5 iterations in 70 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:47] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:04:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:47] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:04:47] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 13 ms.
[2026-05-25 10:04:47] [INFO ] Added : 6 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:47] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Real]Added 30 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:04:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:04:47] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:04:47] [INFO ] [Nat]Added 30 Read/Feed constraints in 11 ms returned sat
[2026-05-25 10:04:47] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 12 ms.
[2026-05-25 10:04:47] [INFO ] Added : 5 causal constraints over 2 iterations in 44 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[408, 164, 262, 1755, 194, 10, 25, 1779, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[408, 164, 262, 1756, 194, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 8 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 7 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:04:52] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:04:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:04:52] [INFO ] Implicit Places using invariants in 93 ms returned []
[2026-05-25 10:04:52] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:04:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:04:52] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:04:52] [INFO ] Implicit Places using invariants and state equation in 206 ms returned []
Implicit Place search using SMT with State Equation took 303 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:04:52] [INFO ] Redundant transitions in 10 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:04:52] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:04:52] [INFO ] Invariant cache hit.
[2026-05-25 10:04:52] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 6237 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:06] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:06] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 3 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Error getting values : (error "ParserException while parsing response: ((s0 0)
(s1 0)
(s2 0)
(s3 0)
(s4 1)
(s5 0)
(s6 0)
(s7 0)
(s8 0)
(s9 0)
(s10 0)
(s11 0)
(s12 0)
(s13 0)
(s14 0)
(s15 0)
(s16 0)
(s17 0)
(s18 0)
(s19 0)
(s20 0)
(s21 1)
(s22 1)
(s23 1)
(s24 1)
(s25 1)
(s26 1)
(s27 1)
(s28 0)
(s29 1)
(s30 1)
(s31 1)
(s32 2)
(s33 1)
(s34 1)
(s35 1)
(s36 1)
(s37 timeout
1) org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Stream closed")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30021 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36457ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 36477ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36820 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:05:29] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 12 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 20 resets, run finished after 95 ms. (steps per millisecond=105 ) properties (out of 10) seen :[5, 2, 4, 6, 4, 5, 5, 9, 6, 5]
Current structural bounds on expressions (after cover walk) : Max Seen:[408, 164, 262, 1756, 194, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:29] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:05:29] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[408, 164, 262, 1756, 194, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (2 resets) in 1490 ms. (670 steps per ms)
BEST_FIRST walk for 10000010 steps (116 resets) in 7948 ms. (1258 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[408, 209, 262, 1756, 405, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:39] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:05:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:05:39] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:05:39] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:05:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:05:39] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:05:39] [INFO ] Added : 6 causal constraints over 3 iterations in 48 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Added 30 Read/Feed constraints in 23 ms returned sat
[2026-05-25 10:05:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Added 30 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:39] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 10 ms.
[2026-05-25 10:05:39] [INFO ] Added : 19 causal constraints over 5 iterations in 68 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:05:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:05:39] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:05:39] [INFO ] Added : 12 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:05:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Absence check using state equation in 42 ms returned sat
[2026-05-25 10:05:39] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:05:39] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:05:39] [INFO ] Added : 4 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:05:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Added 30 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:05:40] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:05:40] [INFO ] Added : 9 causal constraints over 3 iterations in 45 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:05:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Added 30 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:05:40] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 10 ms.
[2026-05-25 10:05:40] [INFO ] Added : 1 causal constraints over 1 iterations in 31 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:05:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:05:40] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:05:40] [INFO ] Added : 2 causal constraints over 1 iterations in 39 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:05:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:05:40] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:05:40] [INFO ] Added : 13 causal constraints over 5 iterations in 52 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:05:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:05:41] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:05:41] [INFO ] Added : 6 causal constraints over 4 iterations in 47 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:41] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Real]Added 30 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:05:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:05:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:05:41] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:05:41] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:05:41] [INFO ] Added : 5 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[408, 209, 262, 1756, 405, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[408, 209, 262, 1756, 423, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 9 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 7 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:05:47] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:05:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:05:47] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 10:05:48] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:05:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:05:48] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:05:48] [INFO ] Implicit Places using invariants and state equation in 203 ms returned []
Implicit Place search using SMT with State Equation took 296 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:05:48] [INFO ] Redundant transitions in 3 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:05:48] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:05:48] [INFO ] Invariant cache hit.
[2026-05-25 10:05:48] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 6275 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:01] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:01] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 8 (OVERLAPS) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30029 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36398ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 36399ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36724 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:06:24] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 6 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 10) seen :[4, 2, 4, 16, 5, 3, 5, 14, 7, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[408, 209, 262, 1756, 423, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:24] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:06:24] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[408, 209, 262, 1756, 423, 31, 31, 286828, 526, 894] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1385 ms. (721 steps per ms)
BEST_FIRST walk for 10000010 steps (103 resets) in 7455 ms. (1341 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[574, 209, 262, 1756, 423, 31, 31, 286828, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:33] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:06:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:33] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:06:33] [INFO ] [Real]Added 30 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:06:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:06:33] [INFO ] Added : 6 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:06:34] [INFO ] Added : 19 causal constraints over 5 iterations in 61 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:06:34] [INFO ] Added : 12 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:06:34] [INFO ] Added : 4 causal constraints over 2 iterations in 34 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:06:34] [INFO ] Added : 9 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 13 ms.
[2026-05-25 10:06:34] [INFO ] Added : 1 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Added 30 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:35] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:06:35] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using 1 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 14 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Added 30 Read/Feed constraints in 28 ms returned sat
[2026-05-25 10:06:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 5 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:06:35] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:06:35] [INFO ] Added : 13 causal constraints over 5 iterations in 49 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:06:35] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:06:35] [INFO ] Added : 6 causal constraints over 4 iterations in 45 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:35] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:06:35] [INFO ] Added : 5 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[574, 209, 262, 1756, 423, 31, 31, 286828, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[574, 209, 262, 1758, 423, 31, 31, 340140, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 7 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 6 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:06:43] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:06:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:43] [INFO ] Implicit Places using invariants in 80 ms returned []
[2026-05-25 10:06:43] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:06:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:43] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:06:43] [INFO ] Implicit Places using invariants and state equation in 210 ms returned []
Implicit Place search using SMT with State Equation took 291 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:06:43] [INFO ] Redundant transitions in 4 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:06:43] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:06:43] [INFO ] Invariant cache hit.
[2026-05-25 10:06:43] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 6074 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:56] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:56] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 8 (OVERLAPS) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30019 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36162ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 36164ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36471 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:07:19] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 8 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 10) seen :[8, 2, 3, 7, 3, 5, 3, 6, 13, 7]
Current structural bounds on expressions (after cover walk) : Max Seen:[574, 209, 262, 1758, 423, 31, 31, 340140, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:19] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:07:19] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[574, 209, 262, 1758, 423, 31, 31, 340140, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1314 ms. (760 steps per ms)
BEST_FIRST walk for 10000010 steps (136 resets) in 7388 ms. (1353 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[693, 209, 262, 1758, 423, 31, 31, 340140, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:28] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:07:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:28] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:07:28] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:07:28] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:28] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:28] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:28] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:07:28] [INFO ] Added : 6 causal constraints over 3 iterations in 47 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:28] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:28] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:28] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:07:28] [INFO ] [Nat]Added 30 Read/Feed constraints in 22 ms returned sat
[2026-05-25 10:07:28] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 10 ms.
[2026-05-25 10:07:29] [INFO ] Added : 19 causal constraints over 5 iterations in 66 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:07:29] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:07:29] [INFO ] Added : 12 causal constraints over 3 iterations in 45 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:07:29] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:07:29] [INFO ] Added : 4 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:29] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:07:29] [INFO ] Added : 9 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:29] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:07:29] [INFO ] Added : 1 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:07:29] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:07:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:07:30] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:07:30] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:07:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:07:30] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:07:30] [INFO ] Added : 13 causal constraints over 5 iterations in 55 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:30] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:07:30] [INFO ] Added : 6 causal constraints over 4 iterations in 47 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:30] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:30] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:07:30] [INFO ] Added : 5 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[693, 209, 262, 1758, 423, 31, 31, 340140, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 209, 262, 1782, 423, 31, 31, 341911, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 6 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 5 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:07:36] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:07:36] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:36] [INFO ] Implicit Places using invariants in 78 ms returned []
[2026-05-25 10:07:36] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:07:36] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:36] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:07:36] [INFO ] Implicit Places using invariants and state equation in 198 ms returned []
Implicit Place search using SMT with State Equation took 303 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:07:36] [INFO ] Redundant transitions in 2 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:07:36] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:07:36] [INFO ] Invariant cache hit.
[2026-05-25 10:07:36] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 6256 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:49] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:49] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30016 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36361ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 36363ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36677 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:08:12] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 43 ms. (steps per millisecond=232 ) properties (out of 10) seen :[4, 2, 4, 20, 3, 3, 3, 4, 8, 7]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 209, 262, 1782, 423, 31, 31, 341911, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:13] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:08:13] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 209, 262, 1782, 423, 31, 31, 341911, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (3 resets) in 1431 ms. (698 steps per ms)
BEST_FIRST walk for 10000010 steps (213 resets) in 7276 ms. (1374 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 226, 262, 1782, 423, 31, 31, 341911, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:21] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:08:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:21] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:08:21] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:08:21] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:21] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:21] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:21] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:08:21] [INFO ] Added : 6 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:21] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:21] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:21] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using state equation in 48 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:22] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 12 ms.
[2026-05-25 10:08:22] [INFO ] Added : 19 causal constraints over 5 iterations in 65 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:08:22] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:08:22] [INFO ] Added : 12 causal constraints over 3 iterations in 55 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:22] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:08:22] [INFO ] Added : 4 causal constraints over 2 iterations in 41 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:22] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:08:22] [INFO ] Added : 9 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:08:22] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:22] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:08:23] [INFO ] Added : 1 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive place invariants in 3 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:23] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:08:23] [INFO ] Added : 2 causal constraints over 1 iterations in 33 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:08:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:08:23] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:08:23] [INFO ] Added : 13 causal constraints over 5 iterations in 54 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:23] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:08:23] [INFO ] Added : 6 causal constraints over 4 iterations in 44 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:08:23] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:23] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:08:23] [INFO ] Added : 5 causal constraints over 2 iterations in 33 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 226, 262, 1782, 423, 31, 31, 341911, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 226, 262, 1784, 423, 31, 31, 345149, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 5 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 5 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:08:29] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:08:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:29] [INFO ] Implicit Places using invariants in 72 ms returned []
[2026-05-25 10:08:29] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:08:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:29] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:08:29] [INFO ] Implicit Places using invariants and state equation in 195 ms returned []
Implicit Place search using SMT with State Equation took 269 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:08:29] [INFO ] Redundant transitions in 1 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:08:29] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:08:29] [INFO ] Invariant cache hit.
[2026-05-25 10:08:29] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 5980 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:42] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:42] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 8 (OVERLAPS) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30026 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36066ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 36067ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36347 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:09:05] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 4 resets, run finished after 44 ms. (steps per millisecond=227 ) properties (out of 10) seen :[5, 2, 5, 5, 4, 7, 3, 4, 8, 8]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 226, 262, 1784, 423, 31, 31, 345149, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:05] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:09:05] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 226, 262, 1784, 423, 31, 31, 345149, 526, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1337 ms. (747 steps per ms)
BEST_FIRST walk for 10000010 steps (96 resets) in 7350 ms. (1360 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 243, 262, 1790, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:14] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:09:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:14] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:09:14] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:09:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:09:14] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:09:14] [INFO ] Added : 6 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:09:14] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 10 ms.
[2026-05-25 10:09:14] [INFO ] Added : 19 causal constraints over 5 iterations in 63 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:09:15] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:09:15] [INFO ] Added : 12 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:15] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:09:15] [INFO ] Added : 4 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:09:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:15] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:09:15] [INFO ] Added : 9 causal constraints over 3 iterations in 52 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:15] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:09:15] [INFO ] Added : 1 causal constraints over 1 iterations in 31 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:09:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:09:15] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:15] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 12 ms.
[2026-05-25 10:09:15] [INFO ] Added : 2 causal constraints over 1 iterations in 35 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:09:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:09:16] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:09:16] [INFO ] Added : 13 causal constraints over 5 iterations in 51 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:16] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:09:16] [INFO ] Added : 6 causal constraints over 4 iterations in 44 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:16] [INFO ] [Nat]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:09:16] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:09:16] [INFO ] Added : 5 causal constraints over 2 iterations in 43 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 243, 262, 1790, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 243, 262, 1791, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 5 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 4 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:09:26] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:09:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:26] [INFO ] Implicit Places using invariants in 83 ms returned []
[2026-05-25 10:09:26] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:09:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:26] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:09:26] [INFO ] Implicit Places using invariants and state equation in 189 ms returned []
Implicit Place search using SMT with State Equation took 274 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:09:26] [INFO ] Redundant transitions in 1 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:09:26] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:09:26] [INFO ] Invariant cache hit.
[2026-05-25 10:09:26] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 5865 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:39] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:39] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 8 (OVERLAPS) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30016 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 35943ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 35945ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36229 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:10:02] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 6 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 10) seen :[3, 1, 3, 16, 3, 3, 3, 12, 1, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 243, 262, 1791, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:02] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:10:02] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 243, 262, 1791, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1380 ms. (724 steps per ms)
BEST_FIRST walk for 10000010 steps (138 resets) in 7339 ms. (1362 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 243, 262, 1791, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:11] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:10:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:10:11] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:10:11] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:11] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:10:11] [INFO ] Added : 6 causal constraints over 3 iterations in 51 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:11] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:10:11] [INFO ] Added : 19 causal constraints over 5 iterations in 59 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:11] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:11] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:10:11] [INFO ] Added : 12 causal constraints over 3 iterations in 51 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 11 ms.
[2026-05-25 10:10:12] [INFO ] Added : 4 causal constraints over 2 iterations in 38 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:10:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:10:12] [INFO ] Added : 9 causal constraints over 3 iterations in 57 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:10:12] [INFO ] Added : 1 causal constraints over 1 iterations in 24 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Added 30 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:10:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:10:12] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:10:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:12] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:10:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:10:13] [INFO ] Added : 13 causal constraints over 5 iterations in 53 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:10:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:10:13] [INFO ] Added : 6 causal constraints over 4 iterations in 50 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:10:13] [INFO ] Added : 5 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 243, 262, 1791, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 243, 262, 1792, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 5 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 4 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:10:20] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:10:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:20] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 10:10:20] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:10:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:20] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:10:20] [INFO ] Implicit Places using invariants and state equation in 192 ms returned []
Implicit Place search using SMT with State Equation took 264 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:10:20] [INFO ] Redundant transitions in 2 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:10:20] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:10:20] [INFO ] Invariant cache hit.
[2026-05-25 10:10:20] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 5957 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:32] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:32] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30015 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36033ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 36034ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36308 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:10:56] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 8 resets, run finished after 37 ms. (steps per millisecond=270 ) properties (out of 10) seen :[7, 3, 2, 8, 3, 7, 3, 15, 5, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 243, 262, 1792, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:56] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:10:56] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 243, 262, 1792, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1307 ms. (764 steps per ms)
BEST_FIRST walk for 10000010 steps (114 resets) in 7371 ms. (1356 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 243, 262, 1795, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:11:05] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:11:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:11:05] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:11:05] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:05] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:05] [INFO ] Added : 6 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:05] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:05] [INFO ] Added : 19 causal constraints over 5 iterations in 61 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:11:05] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:05] [INFO ] Added : 12 causal constraints over 3 iterations in 59 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:06] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:11:06] [INFO ] Added : 4 causal constraints over 2 iterations in 46 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:06] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:06] [INFO ] Added : 9 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:06] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:06] [INFO ] Added : 1 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:11:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:06] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:11:06] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Real]Added 30 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:11:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:11:06] [INFO ] [Nat]Added 30 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:11:06] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 7 ms.
[2026-05-25 10:11:07] [INFO ] Added : 13 causal constraints over 5 iterations in 51 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:07] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:07] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:11:07] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:11:07] [INFO ] Added : 6 causal constraints over 4 iterations in 48 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:07] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:07] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:11:07] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:07] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 9 ms.
[2026-05-25 10:11:07] [INFO ] Added : 5 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 243, 262, 1795, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 243, 262, 1796, 423, 31, 31, 345149, 821, 1074] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
Support contains 10 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 15 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 101/101 places, 256/256 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Applied a total of 0 rules in 7 ms. Remains 101 /101 variables (removed 0) and now considering 256/256 (removed 0) transitions.
[2026-05-25 10:11:13] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:11:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:13] [INFO ] Implicit Places using invariants in 76 ms returned []
[2026-05-25 10:11:13] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:11:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:14] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:11:14] [INFO ] Implicit Places using invariants and state equation in 213 ms returned []
Implicit Place search using SMT with State Equation took 291 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:11:14] [INFO ] Redundant transitions in 2 ms returned []
Running 254 sub problems to find dead transitions.
[2026-05-25 10:11:14] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:11:14] [INFO ] Invariant cache hit.
[2026-05-25 10:11:14] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/267 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
No progress, stopping.
After SMT solving in domain Real declared 267/267 variables, and 133 constraints, problems are : Problem set: 0 solved, 254 unsolved in 5967 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/101 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 3 (OVERLAPS) 166/267 variables, 101/103 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/267 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/267 variables, 254/387 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:11:26] [INFO ] Deduced a trap along path composed of 3 places in 32 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:11:26] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/267 variables, 2/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/267 variables, 0/389 constraints. Problems are: Problem set: 0 solved, 254 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 267/267 variables, and 389 constraints, problems are : Problem set: 0 solved, 254 unsolved in 30018 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 101/101 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 254/254 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36054ms problems are : Problem set: 0 solved, 254 unsolved
Search for dead transitions found 0 dead transitions in 36055ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36365 ms. Remains : 101/101 places, 256/256 transitions.
[2026-05-25 10:11:50] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {28=1, 81=1, 131=1, 164=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 82=1, 132=1, 161=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 3 resets, run finished after 65 ms. (steps per millisecond=153 ) properties (out of 10) seen :[8, 2, 3, 8, 3, 4, 2, 15, 10, 2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 243, 262, 1796, 423, 31, 31, 345149, 821, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
[2026-05-25 10:11:50] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:11:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 243, 262, 1796, 423, 31, 31, 345149, 821, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (3 resets) in 1433 ms. (697 steps per ms)
FORMULA FunctionPointer-PT-b032-UpperBounds-15 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 9000009 steps (90 resets) in 6753 ms. (1332 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 243, 262, 1796, 423, 31, 31, 345149, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:11:58] [INFO ] Flow matrix only has 166 transitions (discarded 90 similar events)
[2026-05-25 10:11:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:58] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:11:58] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:11:58] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:58] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:58] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 10 ms.
[2026-05-25 10:11:58] [INFO ] Added : 6 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:58] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:58] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:58] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:58] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:59] [INFO ] Added : 19 causal constraints over 5 iterations in 64 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:59] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:59] [INFO ] Added : 12 causal constraints over 3 iterations in 54 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:59] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:59] [INFO ] Added : 4 causal constraints over 2 iterations in 38 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:59] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:59] [INFO ] Added : 9 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:59] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:11:59] [INFO ] Added : 1 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:12:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:12:00] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:12:00] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Added 30 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:12:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:00] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:12:00] [INFO ] Added : 13 causal constraints over 5 iterations in 54 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:00] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:12:00] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:00] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 116 transitions) in 8 ms.
[2026-05-25 10:12:00] [INFO ] Added : 6 causal constraints over 4 iterations in 47 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 243, 262, 1796, 423, 31, 31, 345149, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 243, 262, 1798, 423, 31, 31, 345149, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 9 out of 101 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 101/101 places, 256/256 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 100 transition count 254
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 100 transition count 254
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 6 place count 100 transition count 250
Applied a total of 6 rules in 7 ms. Remains 100 /101 variables (removed 1) and now considering 250/256 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 100/101 places, 250/256 transitions.
[2026-05-25 10:12:04] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {34=1, 84=1, 134=1, 158=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 77=1, 127=1, 157=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 15 resets, run finished after 41 ms. (steps per millisecond=243 ) properties (out of 9) seen :[5, 2, 2, 6, 2, 5, 4, 13, 7]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 243, 262, 1798, 423, 31, 31, 345149, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:12:04] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
// Phase 1: matrix 163 rows 100 cols
[2026-05-25 10:12:04] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[709, 243, 262, 1798, 423, 31, 31, 345149, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (3 resets) in 1317 ms. (758 steps per ms)
BEST_FIRST walk for 9000009 steps (87 resets) in 6845 ms. (1314 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 248, 262, 1798, 423, 31, 31, 345149, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:12:12] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:12:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:12] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:12:12] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:12:12] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:12:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:12:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:12] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:12:12] [INFO ] Added : 6 causal constraints over 4 iterations in 46 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:12:13] [INFO ] Added : 10 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:12:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:12:13] [INFO ] Added : 10 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:12:13] [INFO ] Added : 6 causal constraints over 4 iterations in 48 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:12:13] [INFO ] Added : 4 causal constraints over 2 iterations in 34 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:12:14] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:12:14] [INFO ] Added : 1 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using state equation in 45 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Added 30 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:12:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:14] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:12:14] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:14] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:12:14] [INFO ] Added : 6 causal constraints over 4 iterations in 45 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:12:14] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:14] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:12:14] [INFO ] Added : 4 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 248, 262, 1798, 423, 31, 31, 345149, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 248, 262, 1798, 423, 31, 32, 5121016, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 9 out of 100 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 5 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 100/100 places, 250/250 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 5 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
[2026-05-25 10:12:49] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:12:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:12:49] [INFO ] Implicit Places using invariants in 76 ms returned []
[2026-05-25 10:12:49] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:12:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:12:49] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:12:49] [INFO ] Implicit Places using invariants and state equation in 179 ms returned []
Implicit Place search using SMT with State Equation took 257 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:12:49] [INFO ] Redundant transitions in 1 ms returned []
Running 248 sub problems to find dead transitions.
[2026-05-25 10:12:49] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:12:49] [INFO ] Invariant cache hit.
[2026-05-25 10:12:49] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
No progress, stopping.
After SMT solving in domain Real declared 263/263 variables, and 132 constraints, problems are : Problem set: 0 solved, 248 unsolved in 5641 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 248/380 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:01] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:03] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/263 variables, 2/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/263 variables, 0/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 263/263 variables, and 382 constraints, problems are : Problem set: 0 solved, 248 unsolved in 30011 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 35712ms problems are : Problem set: 0 solved, 248 unsolved
Search for dead transitions found 0 dead transitions in 35713ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 35981 ms. Remains : 100/100 places, 250/250 transitions.
[2026-05-25 10:13:25] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {34=1, 84=1, 134=1, 158=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 77=1, 127=1, 157=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 3 resets, run finished after 43 ms. (steps per millisecond=232 ) properties (out of 9) seen :[6, 3, 3, 11, 4, 1, 10, 14, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 248, 262, 1798, 423, 31, 32, 5121016, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:13:25] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:13:25] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 248, 262, 1798, 423, 31, 32, 5121016, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1344 ms. (743 steps per ms)
BEST_FIRST walk for 9000009 steps (77 resets) in 6625 ms. (1358 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 248, 262, 1798, 436, 31, 32, 5121016, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:13:33] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:13:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:13:33] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:13:33] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:13:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 9 ms.
[2026-05-25 10:13:33] [INFO ] Added : 6 causal constraints over 4 iterations in 43 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:13:33] [INFO ] Added : 10 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:13:33] [INFO ] Added : 10 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:13:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:13:33] [INFO ] Added : 6 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:13:34] [INFO ] Added : 4 causal constraints over 2 iterations in 31 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:13:34] [INFO ] Added : 1 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:13:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:13:34] [INFO ] Added : 2 causal constraints over 1 iterations in 24 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:13:34] [INFO ] Added : 6 causal constraints over 4 iterations in 43 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:13:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:13:34] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:34] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:13:34] [INFO ] Added : 4 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 248, 262, 1798, 436, 31, 32, 5121016, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 248, 262, 1798, 436, 31, 32, 5158934, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 9 out of 100 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 5 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 100/100 places, 250/250 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 5 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
[2026-05-25 10:14:08] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:14:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:08] [INFO ] Implicit Places using invariants in 91 ms returned []
[2026-05-25 10:14:08] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:14:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:08] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:14:08] [INFO ] Implicit Places using invariants and state equation in 192 ms returned []
Implicit Place search using SMT with State Equation took 284 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:14:08] [INFO ] Redundant transitions in 2 ms returned []
Running 248 sub problems to find dead transitions.
[2026-05-25 10:14:08] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:14:08] [INFO ] Invariant cache hit.
[2026-05-25 10:14:08] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
No progress, stopping.
After SMT solving in domain Real declared 263/263 variables, and 132 constraints, problems are : Problem set: 0 solved, 248 unsolved in 5712 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 248/380 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:20] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:23] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/263 variables, 2/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/263 variables, 0/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 263/263 variables, and 382 constraints, problems are : Problem set: 0 solved, 248 unsolved in 30021 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 35794ms problems are : Problem set: 0 solved, 248 unsolved
Search for dead transitions found 0 dead transitions in 35794ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36089 ms. Remains : 100/100 places, 250/250 transitions.
[2026-05-25 10:14:44] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {34=1, 84=1, 134=1, 158=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 77=1, 127=1, 157=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 8 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 9) seen :[3, 3, 4, 12, 3, 5, 6, 9, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 248, 262, 1798, 436, 31, 32, 5158934, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:14:44] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:14:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 248, 262, 1798, 436, 31, 32, 5158934, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1273 ms. (784 steps per ms)
BEST_FIRST walk for 9000009 steps (101 resets) in 6693 ms. (1344 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 248, 267, 1798, 436, 31, 32, 5158934, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:14:52] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:14:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:52] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:14:52] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:52] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:14:52] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:14:52] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:14:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 4 ms returned sat
[2026-05-25 10:14:52] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 10:14:52] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:14:52] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:52] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:14:52] [INFO ] Added : 6 causal constraints over 4 iterations in 41 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:52] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:14:52] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:14:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:53] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:14:53] [INFO ] Added : 10 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:53] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:14:53] [INFO ] Added : 10 causal constraints over 3 iterations in 58 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:14:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:14:53] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:14:53] [INFO ] Added : 6 causal constraints over 4 iterations in 43 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:14:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:53] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:14:53] [INFO ] Added : 4 causal constraints over 2 iterations in 31 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:14:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:14:53] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:14:53] [INFO ] Added : 1 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:14:54] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:14:54] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:14:54] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:54] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:54] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:14:54] [INFO ] Added : 6 causal constraints over 4 iterations in 49 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:14:54] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:14:54] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:14:54] [INFO ] Added : 4 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 248, 267, 1798, 436, 31, 32, 5158934, 821] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 248, 267, 1798, 436, 31, 32, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 9 out of 100 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 5 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 100/100 places, 250/250 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 4 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
[2026-05-25 10:15:28] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:15:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:28] [INFO ] Implicit Places using invariants in 78 ms returned []
[2026-05-25 10:15:28] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:15:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:28] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:15:28] [INFO ] Implicit Places using invariants and state equation in 181 ms returned []
Implicit Place search using SMT with State Equation took 260 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:15:28] [INFO ] Redundant transitions in 2 ms returned []
Running 248 sub problems to find dead transitions.
[2026-05-25 10:15:28] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:15:28] [INFO ] Invariant cache hit.
[2026-05-25 10:15:28] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
No progress, stopping.
After SMT solving in domain Real declared 263/263 variables, and 132 constraints, problems are : Problem set: 0 solved, 248 unsolved in 5539 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 248/380 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:39] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:42] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/263 variables, 2/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/263 variables, 0/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 263/263 variables, and 382 constraints, problems are : Problem set: 0 solved, 248 unsolved in 30017 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 35619ms problems are : Problem set: 0 solved, 248 unsolved
Search for dead transitions found 0 dead transitions in 35620ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 35892 ms. Remains : 100/100 places, 250/250 transitions.
[2026-05-25 10:16:04] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {34=1, 84=1, 134=1, 158=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 77=1, 127=1, 157=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 9 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 9) seen :[3, 3, 3, 8, 3, 5, 7, 7, 8]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 248, 267, 1798, 436, 31, 32, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:16:04] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:16:04] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 248, 267, 1798, 436, 31, 32, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000002 steps (2 resets) in 1268 ms. (788 steps per ms)
BEST_FIRST walk for 9000009 steps (228 resets) in 6526 ms. (1378 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 248, 267, 1798, 436, 31, 32, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:16:12] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:16:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:16:12] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:16:12] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 5 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:16:12] [INFO ] Added : 6 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:16:12] [INFO ] Added : 10 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using state equation in 46 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:16:12] [INFO ] Added : 10 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:12] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:16:12] [INFO ] Added : 6 causal constraints over 4 iterations in 55 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:16:12] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:16:13] [INFO ] Added : 4 causal constraints over 2 iterations in 30 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:16:13] [INFO ] Added : 1 causal constraints over 1 iterations in 24 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Added 30 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:16:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:16:13] [INFO ] Added : 2 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:16:13] [INFO ] Added : 6 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:16:13] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:13] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:16:13] [INFO ] Added : 4 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 248, 267, 1798, 436, 31, 32, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 248, 267, 1798, 436, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 9 out of 100 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 5 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 100/100 places, 250/250 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 4 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
[2026-05-25 10:16:47] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:16:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:47] [INFO ] Implicit Places using invariants in 79 ms returned []
[2026-05-25 10:16:47] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:16:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:47] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:16:47] [INFO ] Implicit Places using invariants and state equation in 167 ms returned []
Implicit Place search using SMT with State Equation took 250 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:16:47] [INFO ] Redundant transitions in 1 ms returned []
Running 248 sub problems to find dead transitions.
[2026-05-25 10:16:47] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:16:47] [INFO ] Invariant cache hit.
[2026-05-25 10:16:47] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
No progress, stopping.
After SMT solving in domain Real declared 263/263 variables, and 132 constraints, problems are : Problem set: 0 solved, 248 unsolved in 5822 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 248/380 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:59] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:02] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/263 variables, 2/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/263 variables, 0/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Stream closed")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 263/263 variables, and 382 constraints, problems are : Problem set: 0 solved, 248 unsolved in 30017 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 35899ms problems are : Problem set: 0 solved, 248 unsolved
Search for dead transitions found 0 dead transitions in 35899ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36159 ms. Remains : 100/100 places, 250/250 transitions.
[2026-05-25 10:17:23] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {34=1, 84=1, 134=1, 158=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {27=1, 77=1, 127=1, 157=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 41 ms. (steps per millisecond=243 ) properties (out of 9) seen :[4, 4, 5, 6, 8, 5, 1, 5, 12]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 248, 267, 1798, 436, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:17:23] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:17:23] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 248, 267, 1798, 436, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1388 ms. (719 steps per ms)
BEST_FIRST walk for 9000009 steps (176 resets) in 6480 ms. (1388 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 248, 267, 1798, 436, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:17:31] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:17:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:31] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:31] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:31] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:17:31] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:17:31] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:31] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:31] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:17:31] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:17:31] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:31] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:17:31] [INFO ] Added : 6 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:17:32] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:17:32] [INFO ] Added : 10 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:17:32] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 9 ms.
[2026-05-25 10:17:32] [INFO ] Added : 10 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:17:32] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:17:32] [INFO ] Added : 6 causal constraints over 4 iterations in 45 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Added 30 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:17:32] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 6 ms.
[2026-05-25 10:17:32] [INFO ] Added : 4 causal constraints over 2 iterations in 31 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:17:32] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:17:32] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:17:32] [INFO ] Added : 1 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Added 30 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:17:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:17:33] [INFO ] Added : 4 causal constraints over 2 iterations in 31 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:17:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:17:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:17:33] [INFO ] Added : 6 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:17:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:17:33] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:17:33] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:17:33] [INFO ] Added : 4 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 248, 267, 1798, 436, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 248, 267, 1798, 436, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 9 out of 100 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 5 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 100/100 places, 250/250 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Applied a total of 0 rules in 4 ms. Remains 100 /100 variables (removed 0) and now considering 250/250 (removed 0) transitions.
[2026-05-25 10:18:07] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:18:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:07] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 10:18:07] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:18:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:07] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:18:07] [INFO ] Implicit Places using invariants and state equation in 173 ms returned []
Implicit Place search using SMT with State Equation took 248 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:18:07] [INFO ] Redundant transitions in 3 ms returned []
Running 248 sub problems to find dead transitions.
[2026-05-25 10:18:07] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:18:07] [INFO ] Invariant cache hit.
[2026-05-25 10:18:07] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/263 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
No progress, stopping.
After SMT solving in domain Real declared 263/263 variables, and 132 constraints, problems are : Problem set: 0 solved, 248 unsolved in 5635 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/100 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/100 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/100 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 3 (OVERLAPS) 163/263 variables, 100/102 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/263 variables, 30/132 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/263 variables, 248/380 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:19] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:21] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/263 variables, 2/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/263 variables, 0/382 constraints. Problems are: Problem set: 0 solved, 248 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 263/263 variables, and 382 constraints, problems are : Problem set: 0 solved, 248 unsolved in 30010 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 100/100 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 248/248 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 35712ms problems are : Problem set: 0 solved, 248 unsolved
Search for dead transitions found 0 dead transitions in 35713ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 35974 ms. Remains : 100/100 places, 250/250 transitions.
[2026-05-25 10:18:43] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {34=1, 84=1, 134=1, 158=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 77=1, 127=1, 157=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 10 resets, run finished after 38 ms. (steps per millisecond=263 ) properties (out of 9) seen :[6, 3, 4, 8, 2147483647, 5, 2, 6, 7]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 248, 267, 1798, +inf, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:18:43] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:18:43] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 248, 267, 1798, +inf, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (2 resets) in 1325 ms. (754 steps per ms)
FORMULA FunctionPointer-PT-b032-UpperBounds-07 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 8000008 steps (138 resets) in 5879 ms. (1360 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 248, 267, 1798, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:18:50] [INFO ] Flow matrix only has 163 transitions (discarded 87 similar events)
[2026-05-25 10:18:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:18:50] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 10:18:50] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:18:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:50] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:50] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:18:50] [INFO ] Added : 6 causal constraints over 4 iterations in 41 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:18:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:50] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:50] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 9 ms.
[2026-05-25 10:18:50] [INFO ] Added : 10 causal constraints over 3 iterations in 45 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:51] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:18:51] [INFO ] Added : 10 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:51] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:18:51] [INFO ] Added : 6 causal constraints over 4 iterations in 44 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:18:51] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 10 ms.
[2026-05-25 10:18:51] [INFO ] Added : 1 causal constraints over 1 iterations in 32 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Added 30 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:51] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:18:51] [INFO ] Added : 4 causal constraints over 2 iterations in 30 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Real]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:18:51] [INFO ] [Nat]Added 30 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:18:51] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 8 ms.
[2026-05-25 10:18:51] [INFO ] Added : 6 causal constraints over 4 iterations in 44 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:52] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:52] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:18:52] [INFO ] [Real]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:18:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:52] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:52] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:18:52] [INFO ] [Nat]Added 30 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:18:52] [INFO ] Computed and/alt/rep : 50/226/48 causal constraints (skipped 113 transitions) in 7 ms.
[2026-05-25 10:18:52] [INFO ] Added : 4 causal constraints over 2 iterations in 34 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 248, 267, 1798, 31, 33, 5158934, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 248, 267, 1798, 31, 33, 5203220, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 8 out of 100 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 100/100 places, 250/250 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 99 transition count 248
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 99 transition count 248
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 4 place count 99 transition count 246
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 5 place count 98 transition count 244
Iterating global reduction 1 with 1 rules applied. Total rules applied 6 place count 98 transition count 244
Applied a total of 6 rules in 7 ms. Remains 98 /100 variables (removed 2) and now considering 244/250 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 98/100 places, 244/250 transitions.
[2026-05-25 10:19:25] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 74=1, 108=1, 147=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 75=1, 125=1, 153=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 16 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 8) seen :[3, 3, 3, 8, 7, 4, 6, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 248, 267, 1798, 31, 33, 5203220, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:19:25] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:19:25] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[709, 248, 267, 1798, 31, 33, 5203220, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (2 resets) in 1240 ms. (805 steps per ms)
BEST_FIRST walk for 8000008 steps (107 resets) in 5838 ms. (1370 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 318, 267, 1798, 31, 33, 5203220, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:19:32] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:19:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:32] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:32] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:32] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:19:32] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:19:32] [INFO ] [Real]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:19:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:32] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:32] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:32] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:19:32] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:32] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:19:32] [INFO ] Added : 10 causal constraints over 4 iterations in 49 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:19:33] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 10 ms.
[2026-05-25 10:19:33] [INFO ] Added : 40 causal constraints over 10 iterations in 109 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:19:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:33] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:19:33] [INFO ] Added : 27 causal constraints over 7 iterations in 76 ms. Result :sat
Minimization took 44 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:33] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:19:33] [INFO ] Added : 9 causal constraints over 4 iterations in 44 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:19:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:19:33] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:19:33] [INFO ] Added : 2 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:19:33] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:19:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:19:34] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:19:34] [INFO ] Added : 6 causal constraints over 2 iterations in 30 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:34] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:19:34] [INFO ] Added : 10 causal constraints over 3 iterations in 37 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Real]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:19:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:19:34] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:34] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:19:34] [INFO ] Added : 9 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 318, 267, 1798, 31, 33, 5203220, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 318, 267, 1798, 31, 33, 5231641, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 8 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 98/98 places, 244/244 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 3 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
[2026-05-25 10:20:07] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:20:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:07] [INFO ] Implicit Places using invariants in 86 ms returned []
[2026-05-25 10:20:07] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:20:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:07] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:20:07] [INFO ] Implicit Places using invariants and state equation in 180 ms returned []
Implicit Place search using SMT with State Equation took 266 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:20:07] [INFO ] Redundant transitions in 2 ms returned []
Running 242 sub problems to find dead transitions.
[2026-05-25 10:20:07] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:20:07] [INFO ] Invariant cache hit.
[2026-05-25 10:20:07] [INFO ] State equation strengthened by 28 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Real declared 256/256 variables, and 128 constraints, problems are : Problem set: 0 solved, 242 unsolved in 5498 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 242/370 constraints. Problems are: Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:18] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:19] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:19] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:20] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:21] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/256 variables, 5/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 8 (OVERLAPS) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Int declared 256/256 variables, and 375 constraints, problems are : Problem set: 0 solved, 242 unsolved in 30009 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 35565ms problems are : Problem set: 0 solved, 242 unsolved
Search for dead transitions found 0 dead transitions in 35565ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 35840 ms. Remains : 98/98 places, 244/244 transitions.
[2026-05-25 10:20:43] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 74=1, 108=1, 147=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 75=1, 125=1, 153=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 5 resets, run finished after 43 ms. (steps per millisecond=232 ) properties (out of 8) seen :[4, 3, 4, 16, 6, 2, 7, 7]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 318, 267, 1798, 31, 33, 5231641, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:20:43] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:20:43] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 318, 267, 1798, 31, 33, 5231641, 855] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1301 ms. (768 steps per ms)
BEST_FIRST walk for 8000008 steps (139 resets) in 5797 ms. (1379 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 318, 267, 1870, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:20:50] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:20:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:20:50] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:20:50] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:50] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:50] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 9 ms.
[2026-05-25 10:20:50] [INFO ] Added : 10 causal constraints over 4 iterations in 48 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:50] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:20:50] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 9 ms.
[2026-05-25 10:20:50] [INFO ] Added : 40 causal constraints over 10 iterations in 117 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:20:50] [INFO ] [Real]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:20:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:20:51] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:20:51] [INFO ] Added : 27 causal constraints over 7 iterations in 83 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Added 28 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:20:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:51] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:20:51] [INFO ] Added : 9 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:20:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:20:51] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:20:51] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:20:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:20:51] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:20:51] [INFO ] Added : 6 causal constraints over 2 iterations in 32 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:20:51] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:20:51] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:20:51] [INFO ] Added : 10 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:52] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:20:52] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:20:52] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:52] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:20:52] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:20:52] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:52] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 10 ms.
[2026-05-25 10:20:52] [INFO ] Added : 9 causal constraints over 4 iterations in 49 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 318, 267, 1870, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 318, 267, 1870, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 8 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 98/98 places, 244/244 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
[2026-05-25 10:21:25] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:21:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:25] [INFO ] Implicit Places using invariants in 62 ms returned []
[2026-05-25 10:21:25] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:21:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:25] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:21:25] [INFO ] Implicit Places using invariants and state equation in 186 ms returned []
Implicit Place search using SMT with State Equation took 250 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:21:25] [INFO ] Redundant transitions in 1 ms returned []
Running 242 sub problems to find dead transitions.
[2026-05-25 10:21:25] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:21:25] [INFO ] Invariant cache hit.
[2026-05-25 10:21:25] [INFO ] State equation strengthened by 28 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Real declared 256/256 variables, and 128 constraints, problems are : Problem set: 0 solved, 242 unsolved in 5625 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 242/370 constraints. Problems are: Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:37] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:37] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:37] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:38] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:39] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/256 variables, 5/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 8 (OVERLAPS) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Int declared 256/256 variables, and 375 constraints, problems are : Problem set: 0 solved, 242 unsolved in 30017 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 35713ms problems are : Problem set: 0 solved, 242 unsolved
Search for dead transitions found 0 dead transitions in 35713ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 35977 ms. Remains : 98/98 places, 244/244 transitions.
[2026-05-25 10:22:01] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 74=1, 108=1, 147=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 75=1, 125=1, 153=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 10 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 8) seen :[4, 2, 3, 10, 5, 6, 15, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 318, 267, 1870, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:22:01] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:22:01] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 318, 267, 1870, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1383 ms. (722 steps per ms)
BEST_FIRST walk for 8000008 steps (120 resets) in 5903 ms. (1355 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:22:08] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:22:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:08] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:08] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:08] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:22:08] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:22:08] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:08] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:08] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:09] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:22:09] [INFO ] Added : 10 causal constraints over 4 iterations in 51 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:22:09] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:22:09] [INFO ] Added : 40 causal constraints over 10 iterations in 109 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:09] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:22:09] [INFO ] Added : 27 causal constraints over 7 iterations in 77 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:09] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:22:09] [INFO ] Added : 9 causal constraints over 4 iterations in 47 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:22:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:22:09] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:22:09] [INFO ] Added : 2 causal constraints over 1 iterations in 24 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:22:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:22:10] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:22:10] [INFO ] Added : 6 causal constraints over 2 iterations in 31 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:22:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:10] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:22:10] [INFO ] Added : 10 causal constraints over 3 iterations in 38 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:22:10] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:10] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:22:10] [INFO ] Added : 9 causal constraints over 4 iterations in 54 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 8 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 98/98 places, 244/244 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
[2026-05-25 10:22:45] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:22:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:45] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 10:22:45] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:22:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:45] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:22:46] [INFO ] Implicit Places using invariants and state equation in 187 ms returned []
Implicit Place search using SMT with State Equation took 259 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:22:46] [INFO ] Redundant transitions in 0 ms returned []
Running 242 sub problems to find dead transitions.
[2026-05-25 10:22:46] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:22:46] [INFO ] Invariant cache hit.
[2026-05-25 10:22:46] [INFO ] State equation strengthened by 28 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Real declared 256/256 variables, and 128 constraints, problems are : Problem set: 0 solved, 242 unsolved in 5766 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 242/370 constraints. Problems are: Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:57] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:57] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:57] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/256 variables, 5/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 8 (OVERLAPS) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Int declared 256/256 variables, and 375 constraints, problems are : Problem set: 0 solved, 242 unsolved in 30013 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 35840ms problems are : Problem set: 0 solved, 242 unsolved
Search for dead transitions found 0 dead transitions in 35841ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36108 ms. Remains : 98/98 places, 244/244 transitions.
[2026-05-25 10:23:21] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 74=1, 108=1, 147=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 75=1, 125=1, 153=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 7 resets, run finished after 38 ms. (steps per millisecond=263 ) properties (out of 8) seen :[3, 3, 3, 6, 4, 5, 11, 10]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:23:21] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:23:21] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1444 ms. (692 steps per ms)
BEST_FIRST walk for 8000007 steps (152 resets) in 5922 ms. (1350 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
[2026-05-25 10:23:29] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:23:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:23:29] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:23:29] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:29] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:23:29] [INFO ] Added : 10 causal constraints over 4 iterations in 47 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:29] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:23:29] [INFO ] Added : 40 causal constraints over 10 iterations in 109 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Real]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:23:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:23:29] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:23:29] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:23:30] [INFO ] Added : 27 causal constraints over 7 iterations in 88 ms. Result :sat
Minimization took 44 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:23:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:30] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:23:30] [INFO ] Added : 9 causal constraints over 4 iterations in 59 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:23:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:23:30] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:23:30] [INFO ] Added : 2 causal constraints over 1 iterations in 24 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:23:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:23:30] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:23:30] [INFO ] Added : 6 causal constraints over 2 iterations in 34 ms. Result :sat
Minimization took 24 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:30] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:23:30] [INFO ] Added : 10 causal constraints over 3 iterations in 38 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:30] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:31] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:31] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:23:31] [INFO ] Added : 9 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Support contains 8 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 98/98 places, 244/244 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Applied a total of 0 rules in 3 ms. Remains 98 /98 variables (removed 0) and now considering 244/244 (removed 0) transitions.
[2026-05-25 10:24:04] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:24:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:04] [INFO ] Implicit Places using invariants in 74 ms returned []
[2026-05-25 10:24:04] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:24:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:04] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:24:04] [INFO ] Implicit Places using invariants and state equation in 174 ms returned []
Implicit Place search using SMT with State Equation took 248 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:24:04] [INFO ] Redundant transitions in 1 ms returned []
Running 242 sub problems to find dead transitions.
[2026-05-25 10:24:04] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:24:04] [INFO ] Invariant cache hit.
[2026-05-25 10:24:04] [INFO ] State equation strengthened by 28 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Real declared 256/256 variables, and 128 constraints, problems are : Problem set: 0 solved, 242 unsolved in 5550 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/98 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/98 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/98 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 3 (OVERLAPS) 158/256 variables, 98/100 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/256 variables, 28/128 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 242/370 constraints. Problems are: Problem set: 0 solved, 242 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:16] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:16] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:16] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:17] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:18] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/256 variables, 5/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
At refinement iteration 8 (OVERLAPS) 0/256 variables, 0/375 constraints. Problems are: Problem set: 0 solved, 242 unsolved
No progress, stopping.
After SMT solving in domain Int declared 256/256 variables, and 375 constraints, problems are : Problem set: 0 solved, 242 unsolved in 30012 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 242/242 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 35620ms problems are : Problem set: 0 solved, 242 unsolved
Search for dead transitions found 0 dead transitions in 35621ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 35879 ms. Remains : 98/98 places, 244/244 transitions.
[2026-05-25 10:24:40] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 74=1, 108=1, 147=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 75=1, 125=1, 153=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 13 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 8) seen :[4, 6, 4, 7, 5, 12, 9, 5]
Current structural bounds on expressions (after cover walk) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
RANDOM walk for 40005 steps (8 resets) in 901 ms. (44 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 135 ms. (294 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (9 resets) in 126 ms. (314 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 67 ms. (588 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (9 resets) in 123 ms. (322 steps per ms) remains 9/9 properties
[2026-05-25 10:24:40] [INFO ] Flatten gal took : 99 ms
[2026-05-25 10:24:41] [INFO ] Flatten gal took : 44 ms
BEST_FIRST walk for 40004 steps (11 resets) in 138 ms. (287 steps per ms) remains 9/9 properties
[2026-05-25 10:24:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12711583943242243382.gal : 9 ms
[2026-05-25 10:24:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9634773820221847133.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality12711583943242243382.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9634773820221847133.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
BEST_FIRST walk for 40004 steps (14 resets) in 130 ms. (305 steps per ms) remains 9/9 properties
Loading property file /tmp/ReachabilityCardinality9634773820221847133.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 31
BEST_FIRST walk for 40004 steps (8 resets) in 99 ms. (400 steps per ms) remains 9/9 properties
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :31 after 1067
BEST_FIRST walk for 40004 steps (12 resets) in 122 ms. (325 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (10 resets) in 98 ms. (404 steps per ms) remains 9/9 properties
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :1067 after 193733
Interrupted probabilistic random walk after 279637 steps, run timeout after 3001 ms. (steps per millisecond=93 ) properties seen :1 out of 9
Probabilistic random walk after 279637 steps, saw 174831 distinct states, run finished after 3005 ms. (steps per millisecond=93 ) properties seen :1
[2026-05-25 10:24:44] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:24:44] [INFO ] Invariant cache hit.
[2026-05-25 10:24:44] [INFO ] State equation strengthened by 28 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/7 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 1 (OVERLAPS) 47/54 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/54 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 3 (OVERLAPS) 97/151 variables, 54/55 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 4/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 0/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 56/207 variables, 15/74 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/207 variables, 20/94 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/207 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 9 (OVERLAPS) 7/214 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/214 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/214 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 12 (OVERLAPS) 32/246 variables, 22/118 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/246 variables, 4/122 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/246 variables, 0/122 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 15 (OVERLAPS) 10/256 variables, 6/128 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 17 (OVERLAPS) 0/256 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 8 unsolved
No progress, stopping.
After SMT solving in domain Real declared 256/256 variables, and 128 constraints, problems are : Problem set: 0 solved, 8 unsolved in 372 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 8/8 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 8 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/7 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 1 (OVERLAPS) 47/54 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/54 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 3 (OVERLAPS) 97/151 variables, 54/55 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 4/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 0/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 6 (OVERLAPS) 56/207 variables, 15/74 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/207 variables, 20/94 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/207 variables, 8/102 constraints. Problems are: Problem set: 0 solved, 8 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:44] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:44] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:44] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:44] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:44] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/207 variables, 5/107 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/207 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 11 (OVERLAPS) 7/214 variables, 1/108 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/214 variables, 1/109 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/214 variables, 0/109 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 14 (OVERLAPS) 32/246 variables, 22/131 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/246 variables, 4/135 constraints. Problems are: Problem set: 0 solved, 8 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:45] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/246 variables, 1/136 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/246 variables, 0/136 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 18 (OVERLAPS) 10/256 variables, 6/142 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/256 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 20 (OVERLAPS) 0/256 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 8 unsolved
No progress, stopping.
After SMT solving in domain Int declared 256/256 variables, and 142 constraints, problems are : Problem set: 0 solved, 8 unsolved in 999 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 98/98 constraints, ReadFeed: 28/28 constraints, PredecessorRefiner: 8/8 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 1376ms problems are : Problem set: 0 solved, 8 unsolved
Fused 8 Parikh solutions to 7 different solutions.
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :193733 after 6.15568e+08
Parikh walk visited 0 properties in 30003 ms.
Support contains 7 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 97 transition count 242
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 97 transition count 242
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 3 place count 96 transition count 238
Iterating global reduction 0 with 1 rules applied. Total rules applied 4 place count 96 transition count 238
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 95 transition count 236
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 95 transition count 236
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 94 transition count 232
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 94 transition count 232
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 93 transition count 230
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 93 transition count 230
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 11 place count 92 transition count 228
Iterating global reduction 0 with 1 rules applied. Total rules applied 12 place count 92 transition count 228
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 13 place count 91 transition count 226
Iterating global reduction 0 with 1 rules applied. Total rules applied 14 place count 91 transition count 226
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 15 place count 90 transition count 224
Iterating global reduction 0 with 1 rules applied. Total rules applied 16 place count 90 transition count 224
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 17 place count 89 transition count 222
Iterating global reduction 0 with 1 rules applied. Total rules applied 18 place count 89 transition count 222
Applied a total of 18 rules in 11 ms. Remains 89 /98 variables (removed 9) and now considering 222/244 (removed 22) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 89/98 places, 222/244 transitions.
RANDOM walk for 40000 steps (8 resets) in 211 ms. (188 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40003 steps (10 resets) in 51 ms. (769 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (11 resets) in 47 ms. (833 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40003 steps (8 resets) in 44 ms. (888 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (10 resets) in 43 ms. (909 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (10 resets) in 45 ms. (869 steps per ms) remains 8/8 properties
Interrupted probabilistic random walk after 299882 steps, run timeout after 3001 ms. (steps per millisecond=99 ) properties seen :0 out of 8
Probabilistic random walk after 299882 steps, saw 187434 distinct states, run finished after 3001 ms. (steps per millisecond=99 ) properties seen :0
[2026-05-25 10:25:18] [INFO ] Flow matrix only has 143 transitions (discarded 79 similar events)
// Phase 1: matrix 143 rows 89 cols
[2026-05-25 10:25:18] [INFO ] Computed 2 invariants in 0 ms
[2026-05-25 10:25:18] [INFO ] State equation strengthened by 27 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/7 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 1 (OVERLAPS) 47/54 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/54 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 3 (OVERLAPS) 97/151 variables, 54/55 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 4/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 0/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 47/198 variables, 15/74 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/198 variables, 20/94 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/198 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 9 (OVERLAPS) 5/203 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/203 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/203 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 12 (OVERLAPS) 23/226 variables, 15/111 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/226 variables, 3/114 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/226 variables, 0/114 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 15 (OVERLAPS) 6/232 variables, 4/118 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/232 variables, 0/118 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 17 (OVERLAPS) 0/232 variables, 0/118 constraints. Problems are: Problem set: 0 solved, 8 unsolved
No progress, stopping.
After SMT solving in domain Real declared 232/232 variables, and 118 constraints, problems are : Problem set: 0 solved, 8 unsolved in 356 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 89/89 constraints, ReadFeed: 27/27 constraints, PredecessorRefiner: 8/8 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 8 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/7 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 1 (OVERLAPS) 47/54 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/54 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 3 (OVERLAPS) 97/151 variables, 54/55 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 4/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 0/59 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 6 (OVERLAPS) 47/198 variables, 15/74 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/198 variables, 20/94 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/198 variables, 8/102 constraints. Problems are: Problem set: 0 solved, 8 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:19] [INFO ] Deduced a trap along path composed of 3 places in 32 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:19] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:19] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:19] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:19] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:19] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:19] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/198 variables, 7/109 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/198 variables, 0/109 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 11 (OVERLAPS) 5/203 variables, 1/110 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/203 variables, 1/111 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/203 variables, 0/111 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 14 (OVERLAPS) 23/226 variables, 15/126 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/226 variables, 3/129 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/226 variables, 0/129 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 17 (OVERLAPS) 6/232 variables, 4/133 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/232 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 8 unsolved
At refinement iteration 19 (OVERLAPS) 0/232 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 8 unsolved
No progress, stopping.
After SMT solving in domain Int declared 232/232 variables, and 133 constraints, problems are : Problem set: 0 solved, 8 unsolved in 1239 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 89/89 constraints, ReadFeed: 27/27 constraints, PredecessorRefiner: 8/8 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 7/7 constraints]
After SMT, in 1602ms problems are : Problem set: 0 solved, 8 unsolved
Fused 8 Parikh solutions to 7 different solutions.
Detected timeout of ITS tools.
[2026-05-25 10:25:31] [INFO ] Flatten gal took : 21 ms
[2026-05-25 10:25:31] [INFO ] Applying decomposition
[2026-05-25 10:25:31] [INFO ] Flatten gal took : 25 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph1572485238136922223.txt' '-o' '/tmp/graph1572485238136922223.bin' '-w' '/tmp/graph1572485238136922223.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1572485238136922223.bin' '-l' '-1' '-v' '-w' '/tmp/graph1572485238136922223.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:25:31] [INFO ] Decomposing Gal with order
[2026-05-25 10:25:31] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:25:31] [INFO ] Removed a total of 414 redundant transitions.
[2026-05-25 10:25:31] [INFO ] Flatten gal took : 76 ms
[2026-05-25 10:25:31] [INFO ] Fuse similar labels procedure discarded/fused a total of 122 labels/synchronizations in 15 ms.
[2026-05-25 10:25:31] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12404510262734132048.gal : 6 ms
[2026-05-25 10:25:31] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6888677072273286219.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality12404510262734132048.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6888677072273286219.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality6888677072273286219.prop.
Parikh walk visited 1 properties in 30000 ms.
Support contains 6 out of 89 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 89/89 places, 222/222 transitions.
Graph (complete) has 379 edges and 89 vertex of which 86 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.1 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 86 transition count 216
Applied a total of 7 rules in 5 ms. Remains 86 /89 variables (removed 3) and now considering 216/222 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 86/89 places, 216/222 transitions.
RANDOM walk for 40002 steps (8 resets) in 203 ms. (196 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 51 ms. (769 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 41 ms. (952 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40003 steps (8 resets) in 41 ms. (952 steps per ms) remains 7/7 properties
Interrupted probabilistic random walk after 580664 steps, run timeout after 3001 ms. (steps per millisecond=193 ) properties seen :0 out of 7
Probabilistic random walk after 580664 steps, saw 362206 distinct states, run finished after 3001 ms. (steps per millisecond=193 ) properties seen :0
[2026-05-25 10:25:53] [INFO ] Flow matrix only has 137 transitions (discarded 79 similar events)
// Phase 1: matrix 137 rows 86 cols
[2026-05-25 10:25:53] [INFO ] Computed 3 invariants in 1 ms
[2026-05-25 10:25:53] [INFO ] State equation strengthened by 24 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 1 (OVERLAPS) 47/53 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/53 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 3 (OVERLAPS) 94/147 variables, 53/54 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/147 variables, 4/58 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/147 variables, 0/58 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 6 (OVERLAPS) 42/189 variables, 13/71 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/189 variables, 1/72 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/189 variables, 17/89 constraints. Problems are: Problem set: 0 solved, 7 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/189 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 10 (OVERLAPS) 5/194 variables, 1/90 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/194 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/194 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 13 (OVERLAPS) 23/217 variables, 15/106 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/217 variables, 3/109 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/217 variables, 0/109 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 16 (OVERLAPS) 6/223 variables, 4/113 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/223 variables, 0/113 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 18 (OVERLAPS) 0/223 variables, 0/113 constraints. Problems are: Problem set: 0 solved, 7 unsolved
No progress, stopping.
After SMT solving in domain Real declared 223/223 variables, and 113 constraints, problems are : Problem set: 0 solved, 7 unsolved in 382 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 24/24 constraints, PredecessorRefiner: 7/7 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 7 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 1 (OVERLAPS) 47/53 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/53 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 3 (OVERLAPS) 94/147 variables, 53/54 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/147 variables, 4/58 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/147 variables, 0/58 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 6 (OVERLAPS) 42/189 variables, 13/71 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/189 variables, 1/72 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/189 variables, 17/89 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/189 variables, 7/96 constraints. Problems are: Problem set: 0 solved, 7 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:54] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:54] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:54] [INFO ] Deduced a trap along path composed of 3 places in 97 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:54] [INFO ] Deduced a trap along path composed of 3 places in 58 ms of which 0 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/189 variables, 4/100 constraints. Problems are: Problem set: 0 solved, 7 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:54] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/189 variables, 1/101 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 13 (OVERLAPS) 5/194 variables, 1/102 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/194 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 16 (OVERLAPS) 23/217 variables, 15/118 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/217 variables, 3/121 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/217 variables, 0/121 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 19 (OVERLAPS) 6/223 variables, 4/125 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/223 variables, 0/125 constraints. Problems are: Problem set: 0 solved, 7 unsolved
At refinement iteration 21 (OVERLAPS) 0/223 variables, 0/125 constraints. Problems are: Problem set: 0 solved, 7 unsolved
No progress, stopping.
After SMT solving in domain Int declared 223/223 variables, and 125 constraints, problems are : Problem set: 0 solved, 7 unsolved in 964 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 24/24 constraints, PredecessorRefiner: 7/7 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 1351ms problems are : Problem set: 0 solved, 7 unsolved
Fused 7 Parikh solutions to 6 different solutions.
Detected timeout of ITS tools.
Parikh walk visited 0 properties in 30001 ms.
Support contains 6 out of 86 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 216/216 transitions.
Applied a total of 0 rules in 3 ms. Remains 86 /86 variables (removed 0) and now considering 216/216 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 86/86 places, 216/216 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 216/216 transitions.
Applied a total of 0 rules in 3 ms. Remains 86 /86 variables (removed 0) and now considering 216/216 (removed 0) transitions.
[2026-05-25 10:26:24] [INFO ] Flow matrix only has 137 transitions (discarded 79 similar events)
[2026-05-25 10:26:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:25] [INFO ] Implicit Places using invariants in 65 ms returned []
[2026-05-25 10:26:25] [INFO ] Flow matrix only has 137 transitions (discarded 79 similar events)
[2026-05-25 10:26:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:25] [INFO ] State equation strengthened by 24 read => feed constraints.
[2026-05-25 10:26:25] [INFO ] Implicit Places using invariants and state equation in 155 ms returned []
Implicit Place search using SMT with State Equation took 234 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:26:25] [INFO ] Redundant transitions in 1 ms returned []
Running 214 sub problems to find dead transitions.
[2026-05-25 10:26:25] [INFO ] Flow matrix only has 137 transitions (discarded 79 similar events)
[2026-05-25 10:26:25] [INFO ] Invariant cache hit.
[2026-05-25 10:26:25] [INFO ] State equation strengthened by 24 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/86 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/86 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 2 (OVERLAPS) 137/223 variables, 86/89 constraints. Problems are: Problem set: 0 solved, 214 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/223 variables, 24/113 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/223 variables, 0/113 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 5 (OVERLAPS) 0/223 variables, 0/113 constraints. Problems are: Problem set: 0 solved, 214 unsolved
No progress, stopping.
After SMT solving in domain Real declared 223/223 variables, and 113 constraints, problems are : Problem set: 0 solved, 214 unsolved in 3348 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 24/24 constraints, PredecessorRefiner: 214/214 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 214 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/86 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/86 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 2 (OVERLAPS) 137/223 variables, 86/89 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/223 variables, 24/113 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/223 variables, 214/327 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/223 variables, 0/327 constraints. Problems are: Problem set: 0 solved, 214 unsolved
At refinement iteration 6 (OVERLAPS) 0/223 variables, 0/327 constraints. Problems are: Problem set: 0 solved, 214 unsolved
No progress, stopping.
After SMT solving in domain Int declared 223/223 variables, and 327 constraints, problems are : Problem set: 0 solved, 214 unsolved in 29239 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 24/24 constraints, PredecessorRefiner: 214/214 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 32639ms problems are : Problem set: 0 solved, 214 unsolved
Search for dead transitions found 0 dead transitions in 32640ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 32883 ms. Remains : 86/86 places, 216/216 transitions.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[709, 318, 267, 1910, 31, 33, 5231641, 1233] Max Struct:[+inf, +inf, +inf, +inf, 32, +inf, +inf, +inf]
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-00
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:26:57] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:26:57] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 16 ms. (588 steps per ms)
BEST_FIRST walk for 10000 steps (6 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 10:26:57] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:26:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:26:57] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:57] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:26:57] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:26:57] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:26:57] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:26:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:26:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:57] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:26:58] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:26:58] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:26:58] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:26:58] [INFO ] Added : 8 causal constraints over 4 iterations in 57 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2] Max Struct:[+inf]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Graph (complete) has 415 edges and 98 vertex of which 95 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 95 transition count 238
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 11 place count 91 transition count 230
Iterating global reduction 1 with 4 rules applied. Total rules applied 15 place count 91 transition count 230
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 17 place count 89 transition count 224
Iterating global reduction 1 with 2 rules applied. Total rules applied 19 place count 89 transition count 224
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 21 place count 87 transition count 218
Iterating global reduction 1 with 2 rules applied. Total rules applied 23 place count 87 transition count 218
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 25 place count 85 transition count 212
Iterating global reduction 1 with 2 rules applied. Total rules applied 27 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 29 place count 83 transition count 208
Iterating global reduction 1 with 2 rules applied. Total rules applied 31 place count 83 transition count 208
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 33 place count 81 transition count 204
Iterating global reduction 1 with 2 rules applied. Total rules applied 35 place count 81 transition count 204
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 37 place count 79 transition count 200
Iterating global reduction 1 with 2 rules applied. Total rules applied 39 place count 79 transition count 200
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 41 place count 77 transition count 196
Iterating global reduction 1 with 2 rules applied. Total rules applied 43 place count 77 transition count 196
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 45 place count 75 transition count 192
Iterating global reduction 1 with 2 rules applied. Total rules applied 47 place count 75 transition count 192
Applied a total of 47 rules in 16 ms. Remains 75 /98 variables (removed 23) and now considering 192/244 (removed 52) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 75/98 places, 192/244 transitions.
[2026-05-25 10:26:58] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 38 ms. (steps per millisecond=263 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 10:26:58] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
// Phase 1: matrix 117 rows 75 cols
[2026-05-25 10:26:58] [INFO ] Computed 3 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000002 steps (2 resets) in 1122 ms. (890 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 559 ms. (1785 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1012] Max Struct:[+inf]
[2026-05-25 10:26:59] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:26:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:00] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:00] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:27:00] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:27:00] [INFO ] [Real]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:27:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:00] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:00] [INFO ] [Nat]Absence check using state equation in 19 ms returned sat
[2026-05-25 10:27:00] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:27:00] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 5 ms.
[2026-05-25 10:27:00] [INFO ] Added : 8 causal constraints over 4 iterations in 39 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1012] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1012] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 6 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 5 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:27:01] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:01] [INFO ] Implicit Places using invariants in 59 ms returned []
[2026-05-25 10:27:01] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:01] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:27:01] [INFO ] Implicit Places using invariants and state equation in 148 ms returned []
Implicit Place search using SMT with State Equation took 208 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:27:01] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:27:01] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:01] [INFO ] Invariant cache hit.
[2026-05-25 10:27:01] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4043 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:09] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:09] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 2/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 287 constraints, problems are : Problem set: 0 solved, 190 unsolved in 19210 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 23292ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 23293ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23512 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:27:25] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[1012] Max Struct:[+inf]
[2026-05-25 10:27:25] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:25] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1012] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1099 ms. (909 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 559 ms. (1785 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1047] Max Struct:[+inf]
[2026-05-25 10:27:26] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:26] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:27:26] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:27:26] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:27:26] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:27:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:27:26] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:27:26] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:27:26] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 6 ms.
[2026-05-25 10:27:26] [INFO ] Added : 8 causal constraints over 4 iterations in 33 ms. Result :sat
Minimization took 17 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1047] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1047] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:27:28] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:28] [INFO ] Implicit Places using invariants in 56 ms returned []
[2026-05-25 10:27:28] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:28] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:27:28] [INFO ] Implicit Places using invariants and state equation in 160 ms returned []
Implicit Place search using SMT with State Equation took 217 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:27:28] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:27:28] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:28] [INFO ] Invariant cache hit.
[2026-05-25 10:27:28] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4068 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:36] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:36] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 2/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 287 constraints, problems are : Problem set: 0 solved, 190 unsolved in 19166 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 23282ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 23282ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23514 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:27:51] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[1047] Max Struct:[+inf]
[2026-05-25 10:27:52] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:52] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1047] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1044 ms. (956 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 551 ms. (1811 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1047] Max Struct:[+inf]
[2026-05-25 10:27:53] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:53] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:53] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:53] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:27:53] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:27:53] [INFO ] [Real]Added 17 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:27:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:53] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:27:53] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:27:53] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:27:53] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 6 ms.
[2026-05-25 10:27:53] [INFO ] Added : 8 causal constraints over 4 iterations in 33 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1047] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1047] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:27:55] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:55] [INFO ] Implicit Places using invariants in 72 ms returned []
[2026-05-25 10:27:55] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:55] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:27:55] [INFO ] Implicit Places using invariants and state equation in 151 ms returned []
Implicit Place search using SMT with State Equation took 240 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:27:55] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:27:55] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:27:55] [INFO ] Invariant cache hit.
[2026-05-25 10:27:55] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3996 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:02] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:03] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 2/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 287 constraints, problems are : Problem set: 0 solved, 190 unsolved in 19435 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 23472ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 23474ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23721 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:28:18] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[1047] Max Struct:[+inf]
[2026-05-25 10:28:19] [INFO ] Flatten gal took : 19 ms
RANDOM walk for 40002 steps (8 resets) in 106 ms. (373 steps per ms) remains 1/1 properties
[2026-05-25 10:28:19] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:28:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7835422986625974244.gal : 8 ms
[2026-05-25 10:28:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15468551765617531176.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality7835422986625974244.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15468551765617531176.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality15468551765617531176.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1038
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1038 after 153135
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :153135 after 1.6579e+08
Interrupted probabilistic random walk after 1986946 steps, run timeout after 3001 ms. (steps per millisecond=662 ) properties seen :0 out of 1
Probabilistic random walk after 1986946 steps, saw 1244195 distinct states, run finished after 3001 ms. (steps per millisecond=662 ) properties seen :0
[2026-05-25 10:28:22] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:28:22] [INFO ] Invariant cache hit.
[2026-05-25 10:28:22] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 3/79 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 90/169 variables, 50/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 10/185 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/189 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/189 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/192 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 84 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 3/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/79 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 90/169 variables, 50/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 10/185 variables, 9/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 4/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 3/192 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 105 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 193ms problems are : Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.6579e+08 after 2.22003e+12
Parikh walk visited 0 properties in 785 ms.
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 75/75 places, 192/192 transitions.
RANDOM walk for 40003 steps (8 resets) in 83 ms. (476 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 32 ms. (1212 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2010411 steps, run timeout after 3001 ms. (steps per millisecond=669 ) properties seen :0 out of 1
Probabilistic random walk after 2010411 steps, saw 1258991 distinct states, run finished after 3001 ms. (steps per millisecond=669 ) properties seen :0
[2026-05-25 10:28:26] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:28:26] [INFO ] Invariant cache hit.
[2026-05-25 10:28:26] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 3/79 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 90/169 variables, 50/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 10/185 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/189 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/189 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/192 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 78 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 3/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/79 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 90/169 variables, 50/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 10/185 variables, 9/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 4/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 3/192 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 91 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 172ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 774 ms.
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:28:27] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:28:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:28:27] [INFO ] Implicit Places using invariants in 60 ms returned []
[2026-05-25 10:28:27] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:28:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:28:27] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:28:27] [INFO ] Implicit Places using invariants and state equation in 147 ms returned []
Implicit Place search using SMT with State Equation took 208 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:28:27] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:28:27] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:28:27] [INFO ] Invariant cache hit.
[2026-05-25 10:28:27] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3947 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.22003e+12 after 1.43324e+17
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:34] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:34] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 2/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 287 constraints, problems are : Problem set: 0 solved, 190 unsolved in 19143 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 23133ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 23134ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23354 ms. Remains : 75/75 places, 192/192 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 75 transitions
Reduce isomorphic transitions removed 75 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 75 transition count 111
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 87 place count 69 transition count 111
Performed 11 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 11 Pre rules applied. Total rules applied 87 place count 69 transition count 100
Deduced a syphon composed of 11 places in 0 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 2 with 22 rules applied. Total rules applied 109 place count 58 transition count 100
Performed 17 Post agglomeration using F-continuation condition.Transition count delta: 17
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 143 place count 41 transition count 83
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 150 place count 34 transition count 69
Iterating global reduction 2 with 7 rules applied. Total rules applied 157 place count 34 transition count 69
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 164 place count 27 transition count 55
Iterating global reduction 2 with 7 rules applied. Total rules applied 171 place count 27 transition count 55
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 178 place count 20 transition count 41
Iterating global reduction 2 with 7 rules applied. Total rules applied 185 place count 20 transition count 41
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 192 place count 20 transition count 34
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 192 place count 20 transition count 33
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 194 place count 19 transition count 33
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 196 place count 18 transition count 33
Drop transitions (Redundant composition of simpler transitions.) removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 3 with 3 rules applied. Total rules applied 199 place count 18 transition count 30
Applied a total of 199 rules in 19 ms. Remains 18 /75 variables (removed 57) and now considering 30/192 (removed 162) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 30 rows 18 cols
[2026-05-25 10:28:50] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:28:50] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:28:50] [INFO ] After 8ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:28:50] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:28:50] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:28:50] [INFO ] After 32ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:28:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:28:50] [INFO ] After 6ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:28:50] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:28:50] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:28:50] [INFO ] After 28ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:28:50] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:28:50] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:28:50] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5228893201113105721.gal : 1 ms
[2026-05-25 10:28:50] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4990780478448926439.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5228893201113105721.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4990780478448926439.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality4990780478448926439.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 2674
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2674 after 37587
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :37587 after 1.56351e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.56351e+06 after 4.63928e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :4.63928e+06 after 1.07789e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.07789e+07 after 2.30461e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :2.30461e+07 after 4.75685e+07
Detected timeout of ITS tools.
[2026-05-25 10:29:05] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:29:05] [INFO ] Applying decomposition
[2026-05-25 10:29:05] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph11969792076472408671.txt' '-o' '/tmp/graph11969792076472408671.bin' '-w' '/tmp/graph11969792076472408671.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph11969792076472408671.bin' '-l' '-1' '-v' '-w' '/tmp/graph11969792076472408671.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:29:05] [INFO ] Decomposing Gal with order
[2026-05-25 10:29:05] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:29:05] [INFO ] Removed a total of 22 redundant transitions.
[2026-05-25 10:29:05] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:29:05] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 0 ms.
[2026-05-25 10:29:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10757326353138220596.gal : 0 ms
[2026-05-25 10:29:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13335064816971552108.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality10757326353138220596.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13335064816971552108.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...309
Loading property file /tmp/ReachabilityCardinality13335064816971552108.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 3170
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3170 after 83262
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :83262 after 1.49941e+08
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.49941e+08 after 3.69745e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :3.69745e+09 after 4.57444e+10
Detected timeout of ITS tools.
[2026-05-25 10:29:09] [INFO ] Flatten gal took : 18 ms
[2026-05-25 10:29:09] [INFO ] Applying decomposition
[2026-05-25 10:29:09] [INFO ] Flatten gal took : 8 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph3904549026937835535.txt' '-o' '/tmp/graph3904549026937835535.bin' '-w' '/tmp/graph3904549026937835535.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph3904549026937835535.bin' '-l' '-1' '-v' '-w' '/tmp/graph3904549026937835535.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:29:09] [INFO ] Decomposing Gal with order
[2026-05-25 10:29:09] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:29:09] [INFO ] Removed a total of 323 redundant transitions.
[2026-05-25 10:29:09] [INFO ] Flatten gal took : 15 ms
[2026-05-25 10:29:09] [INFO ] Fuse similar labels procedure discarded/fused a total of 93 labels/synchronizations in 6 ms.
[2026-05-25 10:29:09] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2817196539718609040.gal : 2 ms
[2026-05-25 10:29:09] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5872267819160043638.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality2817196539718609040.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5872267819160043638.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...307
Loading property file /tmp/ReachabilityCardinality5872267819160043638.prop.
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.57444e+10 after 4.45337e+11
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30170 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[1047] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-00 in 142775 ms.
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-01
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:29:20] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:29:20] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 24 ms. (400 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 10 ms. (909 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 10:29:20] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:29:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:29:20] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:29:20] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:29:20] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:29:20] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:29:20] [INFO ] [Real]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:29:20] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:29:20] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:29:20] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:29:20] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:29:20] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:29:20] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 8 ms.
[2026-05-25 10:29:20] [INFO ] Added : 34 causal constraints over 8 iterations in 89 ms. Result :sat
Minimization took 33 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Graph (complete) has 415 edges and 98 vertex of which 95 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 95 transition count 238
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 11 place count 91 transition count 230
Iterating global reduction 1 with 4 rules applied. Total rules applied 15 place count 91 transition count 230
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 17 place count 91 transition count 228
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 18 place count 90 transition count 224
Iterating global reduction 2 with 1 rules applied. Total rules applied 19 place count 90 transition count 224
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 20 place count 89 transition count 222
Iterating global reduction 2 with 1 rules applied. Total rules applied 21 place count 89 transition count 222
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 22 place count 88 transition count 218
Iterating global reduction 2 with 1 rules applied. Total rules applied 23 place count 88 transition count 218
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 24 place count 87 transition count 216
Iterating global reduction 2 with 1 rules applied. Total rules applied 25 place count 87 transition count 216
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 26 place count 86 transition count 214
Iterating global reduction 2 with 1 rules applied. Total rules applied 27 place count 86 transition count 214
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 28 place count 85 transition count 212
Iterating global reduction 2 with 1 rules applied. Total rules applied 29 place count 85 transition count 212
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 30 place count 84 transition count 210
Iterating global reduction 2 with 1 rules applied. Total rules applied 31 place count 84 transition count 210
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 32 place count 83 transition count 208
Iterating global reduction 2 with 1 rules applied. Total rules applied 33 place count 83 transition count 208
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 34 place count 82 transition count 206
Iterating global reduction 2 with 1 rules applied. Total rules applied 35 place count 82 transition count 206
Applied a total of 35 rules in 30 ms. Remains 82 /98 variables (removed 16) and now considering 206/244 (removed 38) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 30 ms. Remains : 82/98 places, 206/244 transitions.
[2026-05-25 10:29:20] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 10:29:21] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
// Phase 1: matrix 126 rows 82 cols
[2026-05-25 10:29:21] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1116 ms. (895 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 674 ms. (1481 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[281] Max Struct:[+inf]
[2026-05-25 10:29:22] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:29:22] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:29:22] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:29:22] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:29:22] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:29:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:29:22] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:29:22] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:29:23] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:23] [INFO ] Deduced a trap composed of 14 places in 61 ms of which 5 ms to minimize.
[2026-05-25 10:29:23] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 69 ms
[2026-05-25 10:29:23] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 71 transitions) in 10 ms.
[2026-05-25 10:29:23] [INFO ] Added : 8 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[281] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[281] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 8 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:29:23] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:29:23] [INFO ] Implicit Places using invariants in 62 ms returned []
[2026-05-25 10:29:23] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:29:23] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:29:23] [INFO ] Implicit Places using invariants and state equation in 173 ms returned []
Implicit Place search using SMT with State Equation took 235 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:29:23] [INFO ] Redundant transitions in 1 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:29:23] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:23] [INFO ] Invariant cache hit.
[2026-05-25 10:29:23] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 5606 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:33] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:34] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:34] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 3/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 310 constraints, problems are : Problem set: 0 solved, 204 unsolved in 25600 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 31258ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 31259ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 31508 ms. Remains : 82/82 places, 206/206 transitions.
[2026-05-25 10:29:54] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[281] Max Struct:[+inf]
[2026-05-25 10:29:54] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:54] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[281] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1141 ms. (875 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 626 ms. (1594 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[294] Max Struct:[+inf]
[2026-05-25 10:29:56] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:29:56] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:29:56] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:29:56] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:29:56] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:29:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:29:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:29:56] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:29:56] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:56] [INFO ] Deduced a trap composed of 14 places in 60 ms of which 5 ms to minimize.
[2026-05-25 10:29:56] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 69 ms
[2026-05-25 10:29:56] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 71 transitions) in 5 ms.
[2026-05-25 10:29:56] [INFO ] Added : 8 causal constraints over 3 iterations in 31 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[294] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[294] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 7 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 4 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:29:56] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:29:56] [INFO ] Implicit Places using invariants in 65 ms returned []
[2026-05-25 10:29:56] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:29:56] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:29:57] [INFO ] Implicit Places using invariants and state equation in 177 ms returned []
Implicit Place search using SMT with State Equation took 243 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:29:57] [INFO ] Redundant transitions in 1 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:29:57] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:29:57] [INFO ] Invariant cache hit.
[2026-05-25 10:29:57] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 5542 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:30:07] [INFO ] Deduced a trap along path composed of 3 places in 34 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:30:07] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:30:08] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 3/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 310 constraints, problems are : Problem set: 0 solved, 204 unsolved in 25022 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 30616ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 30617ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 30874 ms. Remains : 82/82 places, 206/206 transitions.
[2026-05-25 10:30:27] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[294] Max Struct:[+inf]
[2026-05-25 10:30:27] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:30:27] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[294] Max Struct:[+inf]
RANDOM walk for 1000006 steps (2 resets) in 1087 ms. (919 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 632 ms. (1579 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[294] Max Struct:[+inf]
[2026-05-25 10:30:29] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:30:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:30:29] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:30:29] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:30:29] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:30:29] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:30:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:30:29] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:30:29] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:30:29] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:30:29] [INFO ] Deduced a trap composed of 14 places in 59 ms of which 5 ms to minimize.
[2026-05-25 10:30:29] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 67 ms
[2026-05-25 10:30:29] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 71 transitions) in 7 ms.
[2026-05-25 10:30:29] [INFO ] Added : 8 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[294] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[294] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 6 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 4 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:30:29] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:30:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:30:29] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-05-25 10:30:29] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:30:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:30:29] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:30:30] [INFO ] Implicit Places using invariants and state equation in 168 ms returned []
Implicit Place search using SMT with State Equation took 239 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:30:30] [INFO ] Redundant transitions in 1 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:30:30] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:30:30] [INFO ] Invariant cache hit.
[2026-05-25 10:30:30] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 5739 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:30:40] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:30:40] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:30:41] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 3/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 310 constraints, problems are : Problem set: 0 solved, 204 unsolved in 25581 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 31365ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 31366ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 31614 ms. Remains : 82/82 places, 206/206 transitions.
[2026-05-25 10:31:01] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[294] Max Struct:[+inf]
[2026-05-25 10:31:01] [INFO ] Flatten gal took : 16 ms
[2026-05-25 10:31:01] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:31:01] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13854198181399888342.gal : 1 ms
[2026-05-25 10:31:01] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9675530734651162983.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality13854198181399888342.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9675530734651162983.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
RANDOM walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality9675530734651162983.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1040
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1040 after 155244
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :155244 after 1.77406e+08
Interrupted probabilistic random walk after 1942706 steps, run timeout after 3001 ms. (steps per millisecond=647 ) properties seen :0 out of 1
Probabilistic random walk after 1942706 steps, saw 1209134 distinct states, run finished after 3001 ms. (steps per millisecond=647 ) properties seen :0
[2026-05-25 10:31:04] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:31:04] [INFO ] Invariant cache hit.
[2026-05-25 10:31:04] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 7/105 variables, 2/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/105 variables, 3/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 91/196 variables, 53/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/196 variables, 16/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/202 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/202 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 6/208 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 109 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 1/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/98 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 7/105 variables, 2/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 3/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/105 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 91/196 variables, 53/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 16/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/196 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/202 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/202 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 6/208 variables, 8/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
SDD proceeding with computation,1 properties remain. new max is 64
At refinement iteration 22 (INCLUDED_ONLY) 0/208 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
SDD size :1.77406e+08 after 2.77281e+12
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 12 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:04] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 1 ms to minimize.
At refinement iteration 23 (INCLUDED_ONLY) 0/208 variables, 7/112 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/208 variables, 0/112 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/208 variables, 0/112 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 112 constraints, problems are : Problem set: 0 solved, 1 unsolved in 293 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 8/8 constraints]
After SMT, in 410ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 552 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 206/206 transitions.
RANDOM walk for 40004 steps (8 resets) in 96 ms. (412 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 40 ms. (975 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1920474 steps, run timeout after 3001 ms. (steps per millisecond=639 ) properties seen :0 out of 1
Probabilistic random walk after 1920474 steps, saw 1195295 distinct states, run finished after 3001 ms. (steps per millisecond=639 ) properties seen :0
[2026-05-25 10:31:08] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:31:08] [INFO ] Invariant cache hit.
[2026-05-25 10:31:08] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 7/105 variables, 2/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/105 variables, 3/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 91/196 variables, 53/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/196 variables, 16/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/202 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/202 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 6/208 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 106 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 1/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/98 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 7/105 variables, 2/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 3/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/105 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 91/196 variables, 53/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 16/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/196 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/202 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/202 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 6/208 variables, 8/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 12 ms of which 1 ms to minimize.
At refinement iteration 22 (INCLUDED_ONLY) 0/208 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:08] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
At refinement iteration 23 (INCLUDED_ONLY) 0/208 variables, 7/112 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/208 variables, 0/112 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/208 variables, 0/112 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 112 constraints, problems are : Problem set: 0 solved, 1 unsolved in 295 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 8/8 constraints]
After SMT, in 406ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 522 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 4 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:31:09] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:31:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:31:09] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 10:31:09] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:31:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:31:09] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:31:09] [INFO ] Implicit Places using invariants and state equation in 165 ms returned []
Implicit Place search using SMT with State Equation took 238 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:31:09] [INFO ] Redundant transitions in 1 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:31:09] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:31:09] [INFO ] Invariant cache hit.
[2026-05-25 10:31:09] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 5578 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.77281e+12 after 2.96599e+17
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:20] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:20] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:31:21] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 3/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 310 constraints, problems are : Problem set: 0 solved, 204 unsolved in 26134 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 31754ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 31754ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 32002 ms. Remains : 82/82 places, 206/206 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 80 transitions
Reduce isomorphic transitions removed 80 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 86 rules applied. Total rules applied 86 place count 82 transition count 120
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 92 place count 76 transition count 120
Performed 17 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 17 Pre rules applied. Total rules applied 92 place count 76 transition count 103
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 126 place count 59 transition count 103
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 156 place count 44 transition count 88
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 163 place count 37 transition count 74
Iterating global reduction 2 with 7 rules applied. Total rules applied 170 place count 37 transition count 74
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 177 place count 30 transition count 60
Iterating global reduction 2 with 7 rules applied. Total rules applied 184 place count 30 transition count 60
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 191 place count 23 transition count 46
Iterating global reduction 2 with 7 rules applied. Total rules applied 198 place count 23 transition count 46
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 205 place count 23 transition count 39
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 205 place count 23 transition count 38
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 207 place count 22 transition count 38
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 211 place count 20 transition count 38
Applied a total of 211 rules in 14 ms. Remains 20 /82 variables (removed 62) and now considering 38/206 (removed 168) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 38 rows 20 cols
[2026-05-25 10:31:41] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:31:41] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:31:41] [INFO ] After 22ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:31:41] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:31:41] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:31:41] [INFO ] After 42ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:31:41] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:31:41] [INFO ] After 11ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:31:41] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:31:41] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:31:41] [INFO ] After 51ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:31:41] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:31:41] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:31:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17212544907136747595.gal : 1 ms
[2026-05-25 10:31:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3583769837778939769.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality17212544907136747595.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3583769837778939769.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality3583769837778939769.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 11556
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :11556 after 7.75751e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :7.75751e+06 after 6.04406e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.04406e+07 after 3.13809e+08
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :3.13809e+08 after 1.41049e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.41049e+09 after 5.96009e+09
Detected timeout of ITS tools.
[2026-05-25 10:31:51] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:31:51] [INFO ] Applying decomposition
[2026-05-25 10:31:51] [INFO ] Flatten gal took : 8 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph15873770734458810495.txt' '-o' '/tmp/graph15873770734458810495.bin' '-w' '/tmp/graph15873770734458810495.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph15873770734458810495.bin' '-l' '-1' '-v' '-w' '/tmp/graph15873770734458810495.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:31:51] [INFO ] Decomposing Gal with order
[2026-05-25 10:31:51] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:31:51] [INFO ] Removed a total of 351 redundant transitions.
[2026-05-25 10:31:51] [INFO ] Flatten gal took : 19 ms
[2026-05-25 10:31:51] [INFO ] Fuse similar labels procedure discarded/fused a total of 108 labels/synchronizations in 10 ms.
[2026-05-25 10:31:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14909382482285657848.gal : 2 ms
[2026-05-25 10:31:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15853241895423890318.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality14909382482285657848.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15853241895423890318.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...309
Loading property file /tmp/ReachabilityCardinality15853241895423890318.prop.
Detected timeout of ITS tools.
[2026-05-25 10:31:56] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:31:56] [INFO ] Applying decomposition
[2026-05-25 10:31:56] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph1365417096026123176.txt' '-o' '/tmp/graph1365417096026123176.bin' '-w' '/tmp/graph1365417096026123176.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1365417096026123176.bin' '-l' '-1' '-v' '-w' '/tmp/graph1365417096026123176.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:31:56] [INFO ] Decomposing Gal with order
[2026-05-25 10:31:56] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:31:56] [INFO ] Removed a total of 35 redundant transitions.
[2026-05-25 10:31:56] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:31:56] [INFO ] Fuse similar labels procedure discarded/fused a total of 8 labels/synchronizations in 1 ms.
[2026-05-25 10:31:56] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15526212757407288007.gal : 0 ms
[2026-05-25 10:31:56] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1999556375136901899.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality15526212757407288007.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1999556375136901899.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality1999556375136901899.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 4323
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :4323 after 414579
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :414579 after 1.18053e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.18053e+06 after 2.71244e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.71244e+06 after 5.77624e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.77624e+06 after 1.19039e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.19039e+07 after 2.41591e+07
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30227 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[294] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-01 in 171109 ms.
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-02
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:32:11] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:32:11] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 14 ms. (666 steps per ms)
BEST_FIRST walk for 10001 steps (3 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 10:32:11] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:32:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:32:11] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:32:11] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:32:11] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:32:11] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:32:11] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:32:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:32:11] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:32:11] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:32:11] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:32:11] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:32:11] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 6 ms.
[2026-05-25 10:32:11] [INFO ] Added : 30 causal constraints over 9 iterations in 96 ms. Result :sat
Minimization took 30 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[7] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[7] Max Struct:[+inf]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Graph (complete) has 415 edges and 98 vertex of which 95 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 95 transition count 238
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 11 place count 91 transition count 230
Iterating global reduction 1 with 4 rules applied. Total rules applied 15 place count 91 transition count 230
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 17 place count 91 transition count 228
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 18 place count 90 transition count 226
Iterating global reduction 2 with 1 rules applied. Total rules applied 19 place count 90 transition count 226
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 20 place count 89 transition count 222
Iterating global reduction 2 with 1 rules applied. Total rules applied 21 place count 89 transition count 222
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 22 place count 88 transition count 220
Iterating global reduction 2 with 1 rules applied. Total rules applied 23 place count 88 transition count 220
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 24 place count 87 transition count 218
Iterating global reduction 2 with 1 rules applied. Total rules applied 25 place count 87 transition count 218
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 26 place count 86 transition count 216
Iterating global reduction 2 with 1 rules applied. Total rules applied 27 place count 86 transition count 216
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 28 place count 85 transition count 214
Iterating global reduction 2 with 1 rules applied. Total rules applied 29 place count 85 transition count 214
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 30 place count 84 transition count 212
Iterating global reduction 2 with 1 rules applied. Total rules applied 31 place count 84 transition count 212
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 32 place count 83 transition count 210
Iterating global reduction 2 with 1 rules applied. Total rules applied 33 place count 83 transition count 210
Applied a total of 33 rules in 11 ms. Remains 83 /98 variables (removed 15) and now considering 210/244 (removed 34) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 83/98 places, 210/244 transitions.
[2026-05-25 10:32:12] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 64=1, 96=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 64=1, 112=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 10:32:12] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
// Phase 1: matrix 130 rows 83 cols
[2026-05-25 10:32:12] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[7] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1237 ms. (807 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 631 ms. (1582 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[233] Max Struct:[+inf]
[2026-05-25 10:32:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:32:14] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:32:14] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:32:14] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:32:14] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:32:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:32:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:32:14] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:32:14] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:32:14] [INFO ] Deduced a trap composed of 14 places in 52 ms of which 5 ms to minimize.
[2026-05-25 10:32:14] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 58 ms
[2026-05-25 10:32:14] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 7 ms.
[2026-05-25 10:32:14] [INFO ] Added : 15 causal constraints over 4 iterations in 46 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[233] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[233] Max Struct:[+inf]
Support contains 1 out of 83 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 2 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 83/83 places, 210/210 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 2 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 10:32:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:32:15] [INFO ] Implicit Places using invariants in 63 ms returned []
[2026-05-25 10:32:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:32:15] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:32:15] [INFO ] Implicit Places using invariants and state equation in 155 ms returned []
Implicit Place search using SMT with State Equation took 228 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:32:15] [INFO ] Redundant transitions in 0 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:32:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:15] [INFO ] Invariant cache hit.
[2026-05-25 10:32:15] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 208 unsolved in 3421 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 208/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (OVERLAPS) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 312 constraints, problems are : Problem set: 0 solved, 208 unsolved in 23049 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 26513ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26513ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26748 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:32:41] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 64=1, 96=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 64=1, 112=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[233] Max Struct:[+inf]
[2026-05-25 10:32:41] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:41] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[233] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1195 ms. (836 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 600 ms. (1663 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[247] Max Struct:[+inf]
[2026-05-25 10:32:43] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:32:43] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:32:43] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:32:43] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:32:43] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:32:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:32:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:32:43] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:32:43] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:32:43] [INFO ] Deduced a trap composed of 14 places in 59 ms of which 10 ms to minimize.
[2026-05-25 10:32:43] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 68 ms
[2026-05-25 10:32:43] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 6 ms.
[2026-05-25 10:32:43] [INFO ] Added : 15 causal constraints over 4 iterations in 49 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[247] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[247] Max Struct:[+inf]
Support contains 1 out of 83 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 3 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 83/83 places, 210/210 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 2 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 10:32:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:32:44] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-05-25 10:32:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:32:44] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:32:44] [INFO ] Implicit Places using invariants and state equation in 151 ms returned []
Implicit Place search using SMT with State Equation took 218 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:32:44] [INFO ] Redundant transitions in 0 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:32:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:32:44] [INFO ] Invariant cache hit.
[2026-05-25 10:32:44] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 208 unsolved in 3378 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 208/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (OVERLAPS) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 312 constraints, problems are : Problem set: 0 solved, 208 unsolved in 23168 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 26602ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26602ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26833 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:33:11] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 64=1, 96=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 64=1, 112=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[247] Max Struct:[+inf]
[2026-05-25 10:33:11] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:11] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[247] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1084 ms. (921 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 632 ms. (1579 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[252] Max Struct:[+inf]
[2026-05-25 10:33:13] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:33:13] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:33:13] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:33:13] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:33:13] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:33:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:33:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:33:13] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:33:13] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:33:13] [INFO ] Deduced a trap composed of 14 places in 51 ms of which 5 ms to minimize.
[2026-05-25 10:33:13] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 59 ms
[2026-05-25 10:33:13] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 6 ms.
[2026-05-25 10:33:13] [INFO ] Added : 15 causal constraints over 4 iterations in 39 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[252] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[252] Max Struct:[+inf]
Support contains 1 out of 83 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 3 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 83/83 places, 210/210 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 2 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 10:33:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:33:14] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 10:33:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:33:14] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:33:14] [INFO ] Implicit Places using invariants and state equation in 153 ms returned []
Implicit Place search using SMT with State Equation took 249 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:33:14] [INFO ] Redundant transitions in 1 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:33:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:14] [INFO ] Invariant cache hit.
[2026-05-25 10:33:14] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 208 unsolved in 3420 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 208/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (OVERLAPS) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 312 constraints, problems are : Problem set: 0 solved, 208 unsolved in 23066 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 26534ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26535ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26790 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:33:41] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 64=1, 96=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 64=1, 112=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[252] Max Struct:[+inf]
[2026-05-25 10:33:41] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:41] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[252] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1069 ms. (934 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 633 ms. (1577 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[252] Max Struct:[+inf]
[2026-05-25 10:33:42] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:33:42] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:33:42] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:33:42] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:33:43] [INFO ] [Real]Added 18 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:33:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:33:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:33:43] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:33:43] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:33:43] [INFO ] Deduced a trap composed of 14 places in 57 ms of which 5 ms to minimize.
[2026-05-25 10:33:43] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 64 ms
[2026-05-25 10:33:43] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 6 ms.
[2026-05-25 10:33:43] [INFO ] Added : 15 causal constraints over 4 iterations in 39 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[252] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[252] Max Struct:[+inf]
Support contains 1 out of 83 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 3 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 83/83 places, 210/210 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 83/83 places, 210/210 transitions.
Applied a total of 0 rules in 2 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 10:33:43] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:33:44] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 10:33:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:33:44] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:33:44] [INFO ] Implicit Places using invariants and state equation in 157 ms returned []
Implicit Place search using SMT with State Equation took 228 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:33:44] [INFO ] Redundant transitions in 1 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:33:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:33:44] [INFO ] Invariant cache hit.
[2026-05-25 10:33:44] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 208 unsolved in 3272 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/83 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/83 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 2 (OVERLAPS) 130/213 variables, 83/86 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/213 variables, 18/104 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/213 variables, 208/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (OVERLAPS) 0/213 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 312 constraints, problems are : Problem set: 0 solved, 208 unsolved in 22967 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 208/208 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 26285ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26285ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26520 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:34:10] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 64=1, 96=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 64=1, 112=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[252] Max Struct:[+inf]
[2026-05-25 10:34:10] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:34:10] [INFO ] Flatten gal took : 19 ms
[2026-05-25 10:34:10] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality528583068259827421.gal : 1 ms
[2026-05-25 10:34:10] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15562080726025362955.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality528583068259827421.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15562080726025362955.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40000 steps (8 resets) in 90 ms. (439 steps per ms) remains 1/1 properties
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
BEST_FIRST walk for 40004 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality15562080726025362955.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1051
Finished probabilistic random walk after 34777 steps, run visited all 1 properties in 56 ms. (steps per millisecond=621 )
Probabilistic random walk after 34777 steps, saw 21666 distinct states, run finished after 60 ms. (steps per millisecond=579 ) properties seen :1
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[252] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-02 in 118999 ms.
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-04
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:34:10] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:34:10] [INFO ] Computed 2 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10005 steps (2 resets) in 12 ms. (769 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[19] Max Struct:[+inf]
[2026-05-25 10:34:10] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:34:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:34:10] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:34:10] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:34:10] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:34:10] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:34:10] [INFO ] [Real]Added 28 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:34:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:34:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:34:10] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:34:10] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:34:10] [INFO ] [Nat]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:34:10] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:34:10] [INFO ] Added : 8 causal constraints over 4 iterations in 53 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[19] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[20] Max Struct:[+inf]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Graph (complete) has 415 edges and 98 vertex of which 95 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 95 transition count 238
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 11 place count 91 transition count 230
Iterating global reduction 1 with 4 rules applied. Total rules applied 15 place count 91 transition count 230
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 17 place count 91 transition count 228
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 19 place count 89 transition count 222
Iterating global reduction 2 with 2 rules applied. Total rules applied 21 place count 89 transition count 222
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 23 place count 87 transition count 216
Iterating global reduction 2 with 2 rules applied. Total rules applied 25 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 27 place count 85 transition count 210
Iterating global reduction 2 with 2 rules applied. Total rules applied 29 place count 85 transition count 210
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 31 place count 83 transition count 206
Iterating global reduction 2 with 2 rules applied. Total rules applied 33 place count 83 transition count 206
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 35 place count 81 transition count 202
Iterating global reduction 2 with 2 rules applied. Total rules applied 37 place count 81 transition count 202
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 39 place count 79 transition count 198
Iterating global reduction 2 with 2 rules applied. Total rules applied 41 place count 79 transition count 198
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 43 place count 77 transition count 194
Iterating global reduction 2 with 2 rules applied. Total rules applied 45 place count 77 transition count 194
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 47 place count 75 transition count 190
Iterating global reduction 2 with 2 rules applied. Total rules applied 49 place count 75 transition count 190
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 50 place count 74 transition count 188
Iterating global reduction 2 with 1 rules applied. Total rules applied 51 place count 74 transition count 188
Applied a total of 51 rules in 12 ms. Remains 74 /98 variables (removed 24) and now considering 188/244 (removed 56) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12 ms. Remains : 74/98 places, 188/244 transitions.
[2026-05-25 10:34:10] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 50=1, 95=1, 113=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 55=1, 100=1, 114=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 1) seen :[20]
Current structural bounds on expressions (after cover walk) : Max Seen:[20] Max Struct:[+inf]
[2026-05-25 10:34:11] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
// Phase 1: matrix 115 rows 74 cols
[2026-05-25 10:34:11] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[20] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1033 ms. (967 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 584 ms. (1709 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2354] Max Struct:[+inf]
[2026-05-25 10:34:12] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:34:12] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:34:12] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:34:12] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:34:12] [INFO ] [Real]Added 17 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:34:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:34:12] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:34:12] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:34:12] [INFO ] [Nat]Added 17 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:34:12] [INFO ] Deduced a trap composed of 14 places in 52 ms of which 5 ms to minimize.
[2026-05-25 10:34:12] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 59 ms
[2026-05-25 10:34:12] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 10:34:12] [INFO ] Added : 11 causal constraints over 4 iterations in 34 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2354] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2354] Max Struct:[+inf]
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 3 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 74/74 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 10:34:14] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:34:14] [INFO ] Implicit Places using invariants in 60 ms returned []
[2026-05-25 10:34:14] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:34:14] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:34:14] [INFO ] Implicit Places using invariants and state equation in 134 ms returned []
Implicit Place search using SMT with State Equation took 208 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:34:14] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 10:34:14] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:14] [INFO ] Invariant cache hit.
[2026-05-25 10:34:14] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3828 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 186/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (OVERLAPS) 0/189 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 280 constraints, problems are : Problem set: 0 solved, 186 unsolved in 16559 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 20424ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 20425ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20638 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 10:34:35] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 50=1, 95=1, 113=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 55=1, 100=1, 114=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 26 ms. (steps per millisecond=384 ) properties (out of 1) seen :[9]
Current structural bounds on expressions (after cover walk) : Max Seen:[2354] Max Struct:[+inf]
[2026-05-25 10:34:35] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:35] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2354] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1031 ms. (968 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 554 ms. (1801 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2354] Max Struct:[+inf]
[2026-05-25 10:34:36] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:36] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:34:37] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:34:37] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:34:37] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:34:37] [INFO ] [Real]Added 17 Read/Feed constraints in 16 ms returned sat
[2026-05-25 10:34:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:34:37] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:34:37] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:34:37] [INFO ] [Nat]Added 17 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:34:37] [INFO ] Deduced a trap composed of 14 places in 60 ms of which 5 ms to minimize.
[2026-05-25 10:34:37] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 67 ms
[2026-05-25 10:34:37] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 10:34:37] [INFO ] Added : 11 causal constraints over 4 iterations in 34 ms. Result :sat
Minimization took 17 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2354] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2354] Max Struct:[+inf]
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 74/74 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 10:34:38] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:34:39] [INFO ] Implicit Places using invariants in 63 ms returned []
[2026-05-25 10:34:39] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:34:39] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:34:39] [INFO ] Implicit Places using invariants and state equation in 145 ms returned []
Implicit Place search using SMT with State Equation took 209 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:34:39] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 10:34:39] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:34:39] [INFO ] Invariant cache hit.
[2026-05-25 10:34:39] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3850 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 186/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (OVERLAPS) 0/189 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 280 constraints, problems are : Problem set: 0 solved, 186 unsolved in 16614 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 20499ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 20500ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20720 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 10:34:59] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 50=1, 95=1, 113=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 55=1, 100=1, 114=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[13]
Current structural bounds on expressions (after cover walk) : Max Seen:[2354] Max Struct:[+inf]
[2026-05-25 10:34:59] [INFO ] Flatten gal took : 16 ms
[2026-05-25 10:34:59] [INFO ] Flatten gal took : 6 ms
[2026-05-25 10:34:59] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13470983966343698740.gal : 1 ms
[2026-05-25 10:34:59] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality72373463264135753.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality13470983966343698740.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality72373463264135753.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...327
RANDOM walk for 40002 steps (8 resets) in 139 ms. (285 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 28 ms. (1379 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality72373463264135753.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1038
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1038 after 153135
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :153135 after 1.6579e+08
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.6579e+08 after 2.22003e+12
Interrupted probabilistic random walk after 2070612 steps, run timeout after 3001 ms. (steps per millisecond=689 ) properties seen :0 out of 1
Probabilistic random walk after 2070612 steps, saw 1288922 distinct states, run finished after 3001 ms. (steps per millisecond=689 ) properties seen :0
[2026-05-25 10:35:02] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:35:02] [INFO ] Invariant cache hit.
[2026-05-25 10:35:02] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/172 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/172 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 10/182 variables, 9/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/182 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/186 variables, 2/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/186 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 3/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 1 unsolved in 85 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/166 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/172 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/172 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/182 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/186 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/189 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 118 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 219ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1291 ms.
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 74/74 places, 188/188 transitions.
RANDOM walk for 40000 steps (8 resets) in 87 ms. (454 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 31 ms. (1250 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2064834 steps, run timeout after 3001 ms. (steps per millisecond=688 ) properties seen :0 out of 1
Probabilistic random walk after 2064834 steps, saw 1285331 distinct states, run finished after 3001 ms. (steps per millisecond=688 ) properties seen :0
[2026-05-25 10:35:07] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:35:07] [INFO ] Invariant cache hit.
[2026-05-25 10:35:07] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/172 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/172 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 10/182 variables, 9/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/182 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/186 variables, 2/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/186 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 3/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 1 unsolved in 99 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/166 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/172 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/172 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/182 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/186 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/189 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 105 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 215ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1289 ms.
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 1 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 74/74 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 10:35:08] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:35:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:35:08] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 10:35:08] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:35:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:35:08] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:35:09] [INFO ] Implicit Places using invariants and state equation in 138 ms returned []
Implicit Place search using SMT with State Equation took 235 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:35:09] [INFO ] Redundant transitions in 0 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 10:35:09] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:35:09] [INFO ] Invariant cache hit.
[2026-05-25 10:35:09] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3764 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.22003e+12 after 1.43324e+17
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 186/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (OVERLAPS) 0/189 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 280 constraints, problems are : Problem set: 0 solved, 186 unsolved in 16552 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 20359ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 20359ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20600 ms. Remains : 74/74 places, 188/188 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 73 transitions
Reduce isomorphic transitions removed 73 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 79 rules applied. Total rules applied 79 place count 74 transition count 109
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 85 place count 68 transition count 109
Performed 12 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 12 Pre rules applied. Total rules applied 85 place count 68 transition count 97
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 2 with 24 rules applied. Total rules applied 109 place count 56 transition count 97
Performed 16 Post agglomeration using F-continuation condition.Transition count delta: 16
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 141 place count 40 transition count 81
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 148 place count 33 transition count 67
Iterating global reduction 2 with 7 rules applied. Total rules applied 155 place count 33 transition count 67
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 162 place count 26 transition count 53
Iterating global reduction 2 with 7 rules applied. Total rules applied 169 place count 26 transition count 53
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 176 place count 19 transition count 39
Iterating global reduction 2 with 7 rules applied. Total rules applied 183 place count 19 transition count 39
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 190 place count 19 transition count 32
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 190 place count 19 transition count 31
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 192 place count 18 transition count 31
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 194 place count 17 transition count 31
Drop transitions (Redundant composition of simpler transitions.) removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 3 with 2 rules applied. Total rules applied 196 place count 17 transition count 29
Applied a total of 196 rules in 16 ms. Remains 17 /74 variables (removed 57) and now considering 29/188 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 29 rows 17 cols
[2026-05-25 10:35:29] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:35:29] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:35:29] [INFO ] After 21ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:35:29] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:35:29] [INFO ] After 6ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:35:29] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:35:29] [INFO ] After 1ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:35:29] [INFO ] After 3ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:35:29] [INFO ] After 42ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:35:29] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:35:29] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:35:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5568946962827684500.gal : 1 ms
[2026-05-25 10:35:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1357750318818237071.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5568946962827684500.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1357750318818237071.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality1357750318818237071.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 6339
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :6339 after 426547
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :426547 after 1.19848e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.19848e+06 after 2.73637e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.73637e+06 after 5.80616e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.80616e+06 after 1.19398e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.19398e+07 after 2.4201e+07
Detected timeout of ITS tools.
[2026-05-25 10:35:44] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:35:44] [INFO ] Applying decomposition
[2026-05-25 10:35:44] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph15179178778496475609.txt' '-o' '/tmp/graph15179178778496475609.bin' '-w' '/tmp/graph15179178778496475609.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph15179178778496475609.bin' '-l' '-1' '-v' '-w' '/tmp/graph15179178778496475609.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:35:44] [INFO ] Decomposing Gal with order
[2026-05-25 10:35:44] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:35:44] [INFO ] Removed a total of 22 redundant transitions.
[2026-05-25 10:35:44] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:35:44] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 0 ms.
[2026-05-25 10:35:44] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2002419655142945370.gal : 1 ms
[2026-05-25 10:35:44] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3813617494548280811.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality2002419655142945370.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3813617494548280811.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...307
Loading property file /tmp/ReachabilityCardinality3813617494548280811.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 3170
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3170 after 64276
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :64276 after 1.78136e+08
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.78136e+08 after 1.7191e+09
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1.43324e+17 after 9.00981e+17
Detected timeout of ITS tools.
[2026-05-25 10:35:49] [INFO ] Flatten gal took : 13 ms
[2026-05-25 10:35:49] [INFO ] Applying decomposition
[2026-05-25 10:35:49] [INFO ] Flatten gal took : 7 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph10066438999415076779.txt' '-o' '/tmp/graph10066438999415076779.bin' '-w' '/tmp/graph10066438999415076779.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10066438999415076779.bin' '-l' '-1' '-v' '-w' '/tmp/graph10066438999415076779.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:35:49] [INFO ] Decomposing Gal with order
[2026-05-25 10:35:49] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:35:49] [INFO ] Removed a total of 317 redundant transitions.
[2026-05-25 10:35:49] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:35:49] [INFO ] Fuse similar labels procedure discarded/fused a total of 96 labels/synchronizations in 5 ms.
[2026-05-25 10:35:49] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14969578862027234644.gal : 3 ms
[2026-05-25 10:35:49] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11045980107213774013.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality14969578862027234644.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11045980107213774013.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...309
Loading property file /tmp/ReachabilityCardinality11045980107213774013.prop.
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.7191e+09 after 9.52251e+09
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30172 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[2354] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-04 in 108924 ms.
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-08
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[32]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[32]
[2026-05-25 10:35:59] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:35:59] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[32]
RANDOM walk for 10001 steps (2 resets) in 13 ms. (714 steps per ms)
BEST_FIRST walk for 10001 steps (3 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[32]
[2026-05-25 10:35:59] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:35:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:35:59] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:35:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:35:59] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:35:59] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:35:59] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:35:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:35:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:35:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:35:59] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:35:59] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:35:59] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:35:59] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 29 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[32]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[32]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Graph (complete) has 415 edges and 98 vertex of which 95 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 95 transition count 238
Discarding 5 places :
Symmetric choice reduction at 1 with 5 rule applications. Total rules 12 place count 90 transition count 228
Iterating global reduction 1 with 5 rules applied. Total rules applied 17 place count 90 transition count 228
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 19 place count 90 transition count 226
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 21 place count 88 transition count 220
Iterating global reduction 2 with 2 rules applied. Total rules applied 23 place count 88 transition count 220
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 25 place count 86 transition count 214
Iterating global reduction 2 with 2 rules applied. Total rules applied 27 place count 86 transition count 214
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 29 place count 84 transition count 208
Iterating global reduction 2 with 2 rules applied. Total rules applied 31 place count 84 transition count 208
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 33 place count 82 transition count 204
Iterating global reduction 2 with 2 rules applied. Total rules applied 35 place count 82 transition count 204
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 37 place count 80 transition count 200
Iterating global reduction 2 with 2 rules applied. Total rules applied 39 place count 80 transition count 200
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 41 place count 78 transition count 196
Iterating global reduction 2 with 2 rules applied. Total rules applied 43 place count 78 transition count 196
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 45 place count 76 transition count 192
Iterating global reduction 2 with 2 rules applied. Total rules applied 47 place count 76 transition count 192
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 49 place count 74 transition count 188
Iterating global reduction 2 with 2 rules applied. Total rules applied 51 place count 74 transition count 188
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 52 place count 73 transition count 186
Iterating global reduction 2 with 1 rules applied. Total rules applied 53 place count 73 transition count 186
Applied a total of 53 rules in 21 ms. Remains 73 /98 variables (removed 25) and now considering 186/244 (removed 58) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 73/98 places, 186/244 transitions.
[2026-05-25 10:35:59] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
// Phase 1: matrix 112 rows 73 cols
[2026-05-25 10:35:59] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1] Max Struct:[32]
RANDOM walk for 1000000 steps (2 resets) in 1033 ms. (967 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 510 ms. (1956 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[6] Max Struct:[32]
[2026-05-25 10:36:01] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:36:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:36:01] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:36:01] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:36:01] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:36:01] [INFO ] [Real]Added 15 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:36:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:36:01] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:36:01] [INFO ] [Nat]Absence check using state equation in 19 ms returned sat
[2026-05-25 10:36:01] [INFO ] [Nat]Added 15 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:36:01] [INFO ] Computed and/alt/rep : 60/163/51 causal constraints (skipped 59 transitions) in 6 ms.
[2026-05-25 10:36:01] [INFO ] Added : 2 causal constraints over 1 iterations in 18 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[6] Max Struct:[32]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[32] Max Struct:[32]
Support contains 1 out of 73 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 186/186 transitions.
Applied a total of 0 rules in 2 ms. Remains 73 /73 variables (removed 0) and now considering 186/186 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 73/73 places, 186/186 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 186/186 transitions.
Applied a total of 0 rules in 2 ms. Remains 73 /73 variables (removed 0) and now considering 186/186 (removed 0) transitions.
[2026-05-25 10:36:01] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:36:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:36:01] [INFO ] Implicit Places using invariants in 59 ms returned []
[2026-05-25 10:36:01] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:36:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:36:01] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:36:01] [INFO ] Implicit Places using invariants and state equation in 164 ms returned []
Implicit Place search using SMT with State Equation took 224 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:36:01] [INFO ] Redundant transitions in 1 ms returned []
Running 184 sub problems to find dead transitions.
[2026-05-25 10:36:01] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:36:01] [INFO ] Invariant cache hit.
[2026-05-25 10:36:01] [INFO ] State equation strengthened by 15 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/73 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/73 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 2 (OVERLAPS) 112/185 variables, 73/76 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 15/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 5 (OVERLAPS) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
No progress, stopping.
After SMT solving in domain Real declared 185/185 variables, and 91 constraints, problems are : Problem set: 0 solved, 184 unsolved in 4033 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 184/184 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/73 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/73 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 2 (OVERLAPS) 112/185 variables, 73/76 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 15/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/185 variables, 184/275 constraints. Problems are: Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:36:09] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:36:09] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:36:10] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:36:10] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/185 variables, 4/279 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/185 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 7 (OVERLAPS) 0/185 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 184 unsolved
No progress, stopping.
After SMT solving in domain Int declared 185/185 variables, and 279 constraints, problems are : Problem set: 0 solved, 184 unsolved in 24866 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 184/184 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 28934ms problems are : Problem set: 0 solved, 184 unsolved
Search for dead transitions found 0 dead transitions in 28935ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29165 ms. Remains : 73/73 places, 186/186 transitions.
[2026-05-25 10:36:30] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:36:30] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[32] Max Struct:[32]
FORMULA FunctionPointer-PT-b032-UpperBounds-08 32 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000000 steps (2 resets) in 1014 ms. (985 steps per ms)
BEST_FIRST walk for 0 steps (0 resets) in 0 ms. (0 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2026-05-25 10:36:31] [INFO ] Flatten gal took : 13 ms
[2026-05-25 10:36:31] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:36:31] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3431368158562643218.gal : 1 ms
[2026-05-25 10:36:31] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7318444915457588083.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality3431368158562643218.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7318444915457588083.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
ITS runner timed out or was interrupted.
Loading property file /tmp/ReachabilityCardinality7318444915457588083.prop.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-08 in 32206 ms.
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-11
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:36:31] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:36:31] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 13 ms. (714 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 7 ms. (1250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[20] Max Struct:[+inf]
[2026-05-25 10:36:31] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:36:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:36:31] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:36:31] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:36:31] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:36:31] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:36:31] [INFO ] [Real]Added 28 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:36:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:36:31] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:36:31] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:36:31] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:36:31] [INFO ] [Nat]Added 28 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:36:32] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:36:32] [INFO ] Added : 5 causal constraints over 2 iterations in 29 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[20] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[32] Max Struct:[+inf]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 93 transition count 234
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 93 transition count 234
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 12 place count 93 transition count 232
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 14 place count 91 transition count 226
Iterating global reduction 1 with 2 rules applied. Total rules applied 16 place count 91 transition count 226
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 18 place count 89 transition count 220
Iterating global reduction 1 with 2 rules applied. Total rules applied 20 place count 89 transition count 220
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 22 place count 87 transition count 214
Iterating global reduction 1 with 2 rules applied. Total rules applied 24 place count 87 transition count 214
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 26 place count 85 transition count 210
Iterating global reduction 1 with 2 rules applied. Total rules applied 28 place count 85 transition count 210
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 30 place count 83 transition count 206
Iterating global reduction 1 with 2 rules applied. Total rules applied 32 place count 83 transition count 206
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 34 place count 81 transition count 202
Iterating global reduction 1 with 2 rules applied. Total rules applied 36 place count 81 transition count 202
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 38 place count 79 transition count 198
Iterating global reduction 1 with 2 rules applied. Total rules applied 40 place count 79 transition count 198
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 42 place count 77 transition count 194
Iterating global reduction 1 with 2 rules applied. Total rules applied 44 place count 77 transition count 194
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 45 place count 76 transition count 192
Iterating global reduction 1 with 1 rules applied. Total rules applied 46 place count 76 transition count 192
Applied a total of 46 rules in 12 ms. Remains 76 /98 variables (removed 22) and now considering 192/244 (removed 52) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13 ms. Remains : 76/98 places, 192/244 transitions.
[2026-05-25 10:36:32] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {32=1, 57=1, 103=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 54=1, 84=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 7 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[32] Max Struct:[+inf]
[2026-05-25 10:36:32] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
// Phase 1: matrix 118 rows 76 cols
[2026-05-25 10:36:32] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[32] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1020 ms. (979 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 512 ms. (1949 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[32] Max Struct:[+inf]
[2026-05-25 10:36:33] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:36:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:36:33] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:36:33] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:36:33] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:36:33] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:36:33] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:36:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:36:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:36:33] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:36:33] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:36:33] [INFO ] [Nat]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:36:33] [INFO ] Computed and/alt/rep : 62/198/53 causal constraints (skipped 63 transitions) in 5 ms.
[2026-05-25 10:36:33] [INFO ] Added : 3 causal constraints over 1 iterations in 20 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[32] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[32] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:36:33] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:36:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:36:34] [INFO ] Implicit Places using invariants in 56 ms returned []
[2026-05-25 10:36:34] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:36:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:36:34] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:36:34] [INFO ] Implicit Places using invariants and state equation in 152 ms returned []
Implicit Place search using SMT with State Equation took 228 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:36:34] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:36:34] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:36:34] [INFO ] Invariant cache hit.
[2026-05-25 10:36:34] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3666 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:36:42] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:36:42] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 8 (OVERLAPS) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 288 constraints, problems are : Problem set: 0 solved, 190 unsolved in 23131 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 26844ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 26845ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27080 ms. Remains : 76/76 places, 192/192 transitions.
[2026-05-25 10:37:01] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {32=1, 57=1, 103=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 54=1, 84=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[32] Max Struct:[+inf]
[2026-05-25 10:37:01] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:37:01] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:37:01] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4454685256074755587.gal : 1 ms
[2026-05-25 10:37:01] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15562229863386620365.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality4454685256074755587.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15562229863386620365.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality15562229863386620365.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 923
RANDOM walk for 40000 steps (9 resets) in 161 ms. (246 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 28 ms. (1379 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :923 after 103738
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :103738 after 7.00547e+07
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :7.00547e+07 after 4.01378e+11
Interrupted probabilistic random walk after 2037404 steps, run timeout after 3001 ms. (steps per millisecond=678 ) properties seen :0 out of 1
Probabilistic random walk after 2037404 steps, saw 1263357 distinct states, run finished after 3001 ms. (steps per millisecond=678 ) properties seen :0
[2026-05-25 10:37:04] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:37:04] [INFO ] Invariant cache hit.
[2026-05-25 10:37:04] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 41/45 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/45 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 124/169 variables, 57/61 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/169 variables, 18/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/169 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 6/175 variables, 1/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/175 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 1/176 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/176 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 11/187 variables, 10/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/187 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/191 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/191 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 3/194 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 85 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 41/45 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/45 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 124/169 variables, 57/61 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/169 variables, 18/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/169 variables, 1/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/169 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 6/175 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/175 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 1/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/176 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/176 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/187 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:37:04] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 1 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/187 variables, 1/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/187 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/191 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/191 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/194 variables, 2/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/194 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 98 constraints, problems are : Problem set: 0 solved, 1 unsolved in 150 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 237ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 76/76 places, 192/192 transitions.
RANDOM walk for 40001 steps (8 resets) in 84 ms. (470 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :4.01378e+11 after 1.71358e+15
Interrupted probabilistic random walk after 2046554 steps, run timeout after 3001 ms. (steps per millisecond=681 ) properties seen :0 out of 1
Probabilistic random walk after 2046554 steps, saw 1268527 distinct states, run finished after 3001 ms. (steps per millisecond=681 ) properties seen :0
[2026-05-25 10:37:07] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:37:07] [INFO ] Invariant cache hit.
[2026-05-25 10:37:07] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 41/45 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/45 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 124/169 variables, 57/61 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/169 variables, 18/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/169 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 6/175 variables, 1/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/175 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 1/176 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/176 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 11/187 variables, 10/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/187 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/191 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/191 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 3/194 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 87 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 41/45 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/45 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 124/169 variables, 57/61 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/169 variables, 18/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/169 variables, 1/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/169 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 6/175 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/175 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 1/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/176 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/176 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/187 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:37:07] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/187 variables, 1/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/187 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/191 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/191 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/194 variables, 2/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/194 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 98 constraints, problems are : Problem set: 0 solved, 1 unsolved in 136 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 248ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:37:07] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:37:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:37:07] [INFO ] Implicit Places using invariants in 55 ms returned []
[2026-05-25 10:37:07] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:37:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:37:07] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:37:07] [INFO ] Implicit Places using invariants and state equation in 147 ms returned []
Implicit Place search using SMT with State Equation took 221 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:37:07] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:37:07] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:37:07] [INFO ] Invariant cache hit.
[2026-05-25 10:37:07] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3649 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:37:16] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:37:16] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 8 (OVERLAPS) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1.71358e+15 after 3.30943e+19
After SMT solving in domain Int declared 194/194 variables, and 288 constraints, problems are : Problem set: 0 solved, 190 unsolved in 23473 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 27163ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 27164ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27391 ms. Remains : 76/76 places, 192/192 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 74 transitions
Reduce isomorphic transitions removed 74 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 76 transition count 111
Reduce places removed 7 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 8 rules applied. Total rules applied 89 place count 69 transition count 110
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 90 place count 68 transition count 110
Performed 12 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 12 Pre rules applied. Total rules applied 90 place count 68 transition count 98
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 3 with 24 rules applied. Total rules applied 114 place count 56 transition count 98
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 3 with 30 rules applied. Total rules applied 144 place count 41 transition count 83
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 151 place count 34 transition count 69
Iterating global reduction 3 with 7 rules applied. Total rules applied 158 place count 34 transition count 69
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 165 place count 27 transition count 55
Iterating global reduction 3 with 7 rules applied. Total rules applied 172 place count 27 transition count 55
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 179 place count 20 transition count 41
Iterating global reduction 3 with 7 rules applied. Total rules applied 186 place count 20 transition count 41
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 3 with 7 rules applied. Total rules applied 193 place count 20 transition count 34
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 1 Pre rules applied. Total rules applied 193 place count 20 transition count 33
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 195 place count 19 transition count 33
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 197 place count 18 transition count 33
Applied a total of 197 rules in 25 ms. Remains 18 /76 variables (removed 58) and now considering 33/192 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 33 rows 18 cols
[2026-05-25 10:37:35] [INFO ] Computed 2 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:37:35] [INFO ] [Real]Absence check using 1 positive place invariants in 32 ms returned sat
[2026-05-25 10:37:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 25 ms returned sat
[2026-05-25 10:37:35] [INFO ] After 227ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:37:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 10:37:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:37:35] [INFO ] After 7ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:37:35] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:37:35] [INFO ] After 1ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:37:35] [INFO ] After 3ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:37:35] [INFO ] After 30ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:37:35] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:37:35] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:37:35] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12932867492683115179.gal : 0 ms
[2026-05-25 10:37:35] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5871101985814781485.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality12932867492683115179.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5871101985814781485.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality5871101985814781485.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 11556
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :11556 after 7.75751e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :7.75751e+06 after 6.04406e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.04406e+07 after 3.13809e+08
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :3.13809e+08 after 1.41049e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.41049e+09 after 5.96009e+09
Detected timeout of ITS tools.
[2026-05-25 10:37:50] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:37:50] [INFO ] Applying decomposition
[2026-05-25 10:37:50] [INFO ] Flatten gal took : 2 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph15037549521235188531.txt' '-o' '/tmp/graph15037549521235188531.bin' '-w' '/tmp/graph15037549521235188531.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph15037549521235188531.bin' '-l' '-1' '-v' '-w' '/tmp/graph15037549521235188531.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:37:50] [INFO ] Decomposing Gal with order
[2026-05-25 10:37:50] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:37:50] [INFO ] Removed a total of 24 redundant transitions.
[2026-05-25 10:37:50] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:37:50] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 10:37:50] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4492993676773085808.gal : 0 ms
[2026-05-25 10:37:50] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3847224705196253614.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality4492993676773085808.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3847224705196253614.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...307
Loading property file /tmp/ReachabilityCardinality3847224705196253614.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 4323
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :4323 after 414579
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :414579 after 1.18053e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.18053e+06 after 2.71244e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.71244e+06 after 5.77624e+06
Detected timeout of ITS tools.
[2026-05-25 10:37:51] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:37:51] [INFO ] Applying decomposition
[2026-05-25 10:37:51] [INFO ] Flatten gal took : 4 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph9655740056062280135.txt' '-o' '/tmp/graph9655740056062280135.bin' '-w' '/tmp/graph9655740056062280135.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph9655740056062280135.bin' '-l' '-1' '-v' '-w' '/tmp/graph9655740056062280135.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:37:51] [INFO ] Decomposing Gal with order
[2026-05-25 10:37:51] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:37:51] [INFO ] Removed a total of 324 redundant transitions.
[2026-05-25 10:37:51] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:37:51] [INFO ] Fuse similar labels procedure discarded/fused a total of 89 labels/synchronizations in 4 ms.
[2026-05-25 10:37:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16591405717533940067.gal : 1 ms
[2026-05-25 10:37:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2234085904238662389.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality16591405717533940067.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2234085904238662389.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality2234085904238662389.prop.
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.77624e+06 after 1.19039e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.19039e+07 after 2.41591e+07
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30389 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[32] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-11 in 93673 ms.
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-13
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:38:05] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:38:05] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10002 steps (3 resets) in 13 ms. (714 steps per ms)
BEST_FIRST walk for 10001 steps (3 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:38:05] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:38:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:38:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:38:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:38:05] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:38:05] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:38:05] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:38:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:38:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:38:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:38:05] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:38:05] [INFO ] [Nat]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:38:05] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:38:05] [INFO ] Added : 16 causal constraints over 5 iterations in 53 ms. Result :sat
Minimization took 30 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Graph (complete) has 415 edges and 98 vertex of which 95 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 95 transition count 238
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 11 place count 91 transition count 230
Iterating global reduction 1 with 4 rules applied. Total rules applied 15 place count 91 transition count 230
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 17 place count 91 transition count 228
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 19 place count 89 transition count 222
Iterating global reduction 2 with 2 rules applied. Total rules applied 21 place count 89 transition count 222
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 23 place count 87 transition count 216
Iterating global reduction 2 with 2 rules applied. Total rules applied 25 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 27 place count 85 transition count 210
Iterating global reduction 2 with 2 rules applied. Total rules applied 29 place count 85 transition count 210
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 31 place count 83 transition count 206
Iterating global reduction 2 with 2 rules applied. Total rules applied 33 place count 83 transition count 206
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 35 place count 81 transition count 202
Iterating global reduction 2 with 2 rules applied. Total rules applied 37 place count 81 transition count 202
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 39 place count 79 transition count 198
Iterating global reduction 2 with 2 rules applied. Total rules applied 41 place count 79 transition count 198
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 43 place count 77 transition count 194
Iterating global reduction 2 with 2 rules applied. Total rules applied 45 place count 77 transition count 194
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 47 place count 75 transition count 190
Iterating global reduction 2 with 2 rules applied. Total rules applied 49 place count 75 transition count 190
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 50 place count 74 transition count 188
Iterating global reduction 2 with 1 rules applied. Total rules applied 51 place count 74 transition count 188
Applied a total of 51 rules in 12 ms. Remains 74 /98 variables (removed 24) and now considering 188/244 (removed 56) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12 ms. Remains : 74/98 places, 188/244 transitions.
[2026-05-25 10:38:05] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 50=1, 95=1, 113=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 55=1, 100=1, 114=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 1) seen :[9]
Current structural bounds on expressions (after cover walk) : Max Seen:[9] Max Struct:[+inf]
[2026-05-25 10:38:05] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
// Phase 1: matrix 115 rows 74 cols
[2026-05-25 10:38:05] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[9] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1035 ms. (965 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 572 ms. (1745 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2229] Max Struct:[+inf]
[2026-05-25 10:38:07] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:38:07] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:38:07] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:38:07] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:38:07] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:38:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:38:07] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:38:07] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:38:07] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:38:07] [INFO ] Deduced a trap composed of 14 places in 49 ms of which 5 ms to minimize.
[2026-05-25 10:38:07] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 62 ms
[2026-05-25 10:38:07] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 6 ms.
[2026-05-25 10:38:07] [INFO ] Added : 8 causal constraints over 4 iterations in 37 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2229] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2229] Max Struct:[+inf]
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 74/74 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 10:38:09] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:38:09] [INFO ] Implicit Places using invariants in 62 ms returned []
[2026-05-25 10:38:09] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:38:09] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:38:09] [INFO ] Implicit Places using invariants and state equation in 141 ms returned []
Implicit Place search using SMT with State Equation took 203 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:38:09] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 10:38:09] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:09] [INFO ] Invariant cache hit.
[2026-05-25 10:38:09] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3825 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 186/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:38:18] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 1/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 281 constraints, problems are : Problem set: 0 solved, 186 unsolved in 24315 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 28178ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 28178ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28388 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 10:38:38] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 50=1, 95=1, 113=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 55=1, 100=1, 114=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 1) seen :[12]
Current structural bounds on expressions (after cover walk) : Max Seen:[2229] Max Struct:[+inf]
[2026-05-25 10:38:38] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:38] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2229] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1037 ms. (963 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 568 ms. (1757 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2252] Max Struct:[+inf]
[2026-05-25 10:38:39] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:38:39] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:38:39] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:38:39] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:38:39] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:38:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:38:39] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:38:39] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:38:39] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:38:39] [INFO ] Deduced a trap composed of 14 places in 52 ms of which 5 ms to minimize.
[2026-05-25 10:38:39] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 61 ms
[2026-05-25 10:38:39] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 10:38:39] [INFO ] Added : 8 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2252] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2252] Max Struct:[+inf]
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 74/74 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 10:38:42] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:38:42] [INFO ] Implicit Places using invariants in 61 ms returned []
[2026-05-25 10:38:42] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:38:42] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:38:42] [INFO ] Implicit Places using invariants and state equation in 139 ms returned []
Implicit Place search using SMT with State Equation took 208 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:38:42] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 10:38:42] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:38:42] [INFO ] Invariant cache hit.
[2026-05-25 10:38:42] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3893 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 186/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:38:50] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 1/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 281 constraints, problems are : Problem set: 0 solved, 186 unsolved in 24304 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 28234ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 28236ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28450 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 10:39:10] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 50=1, 95=1, 113=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 2 ms.
This minimized invariant on transitions {29=1, 55=1, 100=1, 114=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 1) seen :[9]
Current structural bounds on expressions (after cover walk) : Max Seen:[2252] Max Struct:[+inf]
[2026-05-25 10:39:10] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:10] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2252] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1019 ms. (980 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 589 ms. (1694 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2252] Max Struct:[+inf]
[2026-05-25 10:39:12] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:39:12] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:39:12] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:39:12] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:39:12] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:39:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:39:12] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:39:12] [INFO ] [Nat]Absence check using state equation in 19 ms returned sat
[2026-05-25 10:39:12] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:39:12] [INFO ] Deduced a trap composed of 14 places in 53 ms of which 5 ms to minimize.
[2026-05-25 10:39:12] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 61 ms
[2026-05-25 10:39:12] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 10:39:12] [INFO ] Added : 8 causal constraints over 4 iterations in 35 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2252] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2252] Max Struct:[+inf]
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 1 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 74/74 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 10:39:14] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:39:14] [INFO ] Implicit Places using invariants in 66 ms returned []
[2026-05-25 10:39:14] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:39:14] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:39:14] [INFO ] Implicit Places using invariants and state equation in 135 ms returned []
Implicit Place search using SMT with State Equation took 201 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:39:14] [INFO ] Redundant transitions in 0 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 10:39:14] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:14] [INFO ] Invariant cache hit.
[2026-05-25 10:39:14] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3938 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 186/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:39:22] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 1/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 281 constraints, problems are : Problem set: 0 solved, 186 unsolved in 24484 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 28462ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 28463ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28673 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 10:39:43] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 50=1, 95=1, 113=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 55=1, 100=1, 114=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 1) seen :[13]
Current structural bounds on expressions (after cover walk) : Max Seen:[2252] Max Struct:[+inf]
[2026-05-25 10:39:43] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:39:43] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:39:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14320574229403646393.gal : 1 ms
[2026-05-25 10:39:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6215916042197629208.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality14320574229403646393.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6215916042197629208.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
RANDOM walk for 40001 steps (8 resets) in 67 ms. (588 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality6215916042197629208.prop.
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1038
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1038 after 153135
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :153135 after 1.6579e+08
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.6579e+08 after 2.22003e+12
Interrupted probabilistic random walk after 2079798 steps, run timeout after 3001 ms. (steps per millisecond=693 ) properties seen :0 out of 1
Probabilistic random walk after 2079798 steps, saw 1246167 distinct states, run finished after 3001 ms. (steps per millisecond=693 ) properties seen :0
[2026-05-25 10:39:46] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:46] [INFO ] Invariant cache hit.
[2026-05-25 10:39:46] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/172 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/172 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 10/182 variables, 9/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/182 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/186 variables, 2/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/186 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 3/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 1 unsolved in 71 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/166 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/172 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/172 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/182 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/186 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/189 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 87 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 185ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1 ms.
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 74/74 places, 188/188 transitions.
RANDOM walk for 40000 steps (8 resets) in 77 ms. (512 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 24 ms. (1600 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2073285 steps, run timeout after 3001 ms. (steps per millisecond=690 ) properties seen :0 out of 1
Probabilistic random walk after 2073285 steps, saw 1242113 distinct states, run finished after 3001 ms. (steps per millisecond=690 ) properties seen :0
[2026-05-25 10:39:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:49] [INFO ] Invariant cache hit.
[2026-05-25 10:39:49] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/172 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/172 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 10/182 variables, 9/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/182 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/186 variables, 2/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/186 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 3/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 1 unsolved in 71 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/68 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/68 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/74 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/74 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/74 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 92/166 variables, 53/63 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/166 variables, 17/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/166 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/166 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/172 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/172 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/182 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/186 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/189 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/189 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 88 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 187ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 74/74 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 10:39:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:39:49] [INFO ] Implicit Places using invariants in 57 ms returned []
[2026-05-25 10:39:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:39:49] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:39:49] [INFO ] Implicit Places using invariants and state equation in 136 ms returned []
Implicit Place search using SMT with State Equation took 218 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:39:49] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 10:39:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 10:39:49] [INFO ] Invariant cache hit.
[2026-05-25 10:39:49] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 189/189 variables, and 94 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3849 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 115/189 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/189 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/189 variables, 186/280 constraints. Problems are: Problem set: 0 solved, 186 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.22003e+12 after 1.43324e+17
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:39:58] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 1/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 281 constraints, problems are : Problem set: 0 solved, 186 unsolved in 24614 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 28506ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 28507ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28731 ms. Remains : 74/74 places, 188/188 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 73 transitions
Reduce isomorphic transitions removed 73 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 79 rules applied. Total rules applied 79 place count 74 transition count 109
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 85 place count 68 transition count 109
Performed 12 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 12 Pre rules applied. Total rules applied 85 place count 68 transition count 97
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 2 with 24 rules applied. Total rules applied 109 place count 56 transition count 97
Performed 16 Post agglomeration using F-continuation condition.Transition count delta: 16
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 141 place count 40 transition count 81
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 148 place count 33 transition count 67
Iterating global reduction 2 with 7 rules applied. Total rules applied 155 place count 33 transition count 67
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 162 place count 26 transition count 53
Iterating global reduction 2 with 7 rules applied. Total rules applied 169 place count 26 transition count 53
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 176 place count 19 transition count 39
Iterating global reduction 2 with 7 rules applied. Total rules applied 183 place count 19 transition count 39
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 190 place count 19 transition count 32
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 190 place count 19 transition count 31
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 192 place count 18 transition count 31
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 194 place count 17 transition count 31
Drop transitions (Redundant composition of simpler transitions.) removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 3 with 2 rules applied. Total rules applied 196 place count 17 transition count 29
Applied a total of 196 rules in 14 ms. Remains 17 /74 variables (removed 57) and now considering 29/188 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 29 rows 17 cols
[2026-05-25 10:40:18] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:40:18] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:40:18] [INFO ] After 25ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:40:18] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:40:18] [INFO ] After 6ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:40:18] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:40:18] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:40:18] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:40:18] [INFO ] After 38ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:40:18] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:40:18] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:40:18] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15550039200107887974.gal : 0 ms
[2026-05-25 10:40:18] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11936661967972128580.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality15550039200107887974.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11936661967972128580.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
Loading property file /tmp/ReachabilityCardinality11936661967972128580.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 6339
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :6339 after 426547
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :426547 after 1.19848e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.19848e+06 after 2.73637e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.73637e+06 after 5.80616e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.80616e+06 after 1.19398e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.19398e+07 after 2.4201e+07
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1.43324e+17 after 9.00981e+17
Detected timeout of ITS tools.
[2026-05-25 10:40:33] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:40:33] [INFO ] Applying decomposition
[2026-05-25 10:40:33] [INFO ] Flatten gal took : 9 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph2539346285863984441.txt' '-o' '/tmp/graph2539346285863984441.bin' '-w' '/tmp/graph2539346285863984441.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2539346285863984441.bin' '-l' '-1' '-v' '-w' '/tmp/graph2539346285863984441.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:40:33] [INFO ] Decomposing Gal with order
[2026-05-25 10:40:33] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:40:33] [INFO ] Removed a total of 317 redundant transitions.
[2026-05-25 10:40:33] [INFO ] Flatten gal took : 22 ms
[2026-05-25 10:40:33] [INFO ] Fuse similar labels procedure discarded/fused a total of 93 labels/synchronizations in 9 ms.
[2026-05-25 10:40:33] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8683715348589526262.gal : 1 ms
[2026-05-25 10:40:33] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8807135686001395828.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality8683715348589526262.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8807135686001395828.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...307
Loading property file /tmp/ReachabilityCardinality8807135686001395828.prop.
Detected timeout of ITS tools.
[2026-05-25 10:40:33] [INFO ] Flatten gal took : 15 ms
[2026-05-25 10:40:33] [INFO ] Applying decomposition
[2026-05-25 10:40:33] [INFO ] Flatten gal took : 0 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph3811953841141262082.txt' '-o' '/tmp/graph3811953841141262082.bin' '-w' '/tmp/graph3811953841141262082.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph3811953841141262082.bin' '-l' '-1' '-v' '-w' '/tmp/graph3811953841141262082.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:40:33] [INFO ] Decomposing Gal with order
[2026-05-25 10:40:33] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:40:33] [INFO ] Removed a total of 22 redundant transitions.
[2026-05-25 10:40:33] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:40:33] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 0 ms.
[2026-05-25 10:40:33] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16981228328400844945.gal : 0 ms
[2026-05-25 10:40:33] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5131118959550942888.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality16981228328400844945.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5131118959550942888.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality5131118959550942888.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 3170
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3170 after 64274
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :64274 after 1.78136e+08
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.78136e+08 after 1.7191e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.7191e+09 after 9.52251e+09
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30158 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[2252] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-13 in 163020 ms.
Starting property specific reduction for FunctionPointer-PT-b032-UpperBounds-14
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:40:48] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
// Phase 1: matrix 158 rows 98 cols
[2026-05-25 10:40:48] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 14 ms. (666 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[23] Max Struct:[+inf]
[2026-05-25 10:40:48] [INFO ] Flow matrix only has 158 transitions (discarded 86 similar events)
[2026-05-25 10:40:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:40:48] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:40:48] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:40:48] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:40:48] [INFO ] State equation strengthened by 28 read => feed constraints.
[2026-05-25 10:40:48] [INFO ] [Real]Added 28 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:40:48] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:40:48] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:40:48] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:40:48] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:40:48] [INFO ] [Nat]Added 28 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:40:48] [INFO ] Computed and/alt/rep : 66/353/63 causal constraints (skipped 93 transitions) in 7 ms.
[2026-05-25 10:40:48] [INFO ] Added : 8 causal constraints over 4 iterations in 52 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[23] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[23] Max Struct:[+inf]
Support contains 1 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 244/244 transitions.
Graph (complete) has 415 edges and 98 vertex of which 95 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 95 transition count 238
Discarding 5 places :
Symmetric choice reduction at 1 with 5 rule applications. Total rules 12 place count 90 transition count 228
Iterating global reduction 1 with 5 rules applied. Total rules applied 17 place count 90 transition count 228
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 19 place count 90 transition count 226
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 21 place count 88 transition count 220
Iterating global reduction 2 with 2 rules applied. Total rules applied 23 place count 88 transition count 220
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 25 place count 86 transition count 214
Iterating global reduction 2 with 2 rules applied. Total rules applied 27 place count 86 transition count 214
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 29 place count 84 transition count 208
Iterating global reduction 2 with 2 rules applied. Total rules applied 31 place count 84 transition count 208
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 33 place count 82 transition count 204
Iterating global reduction 2 with 2 rules applied. Total rules applied 35 place count 82 transition count 204
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 37 place count 80 transition count 200
Iterating global reduction 2 with 2 rules applied. Total rules applied 39 place count 80 transition count 200
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 40 place count 79 transition count 198
Iterating global reduction 2 with 1 rules applied. Total rules applied 41 place count 79 transition count 198
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 42 place count 78 transition count 196
Iterating global reduction 2 with 1 rules applied. Total rules applied 43 place count 78 transition count 196
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 44 place count 77 transition count 194
Iterating global reduction 2 with 1 rules applied. Total rules applied 45 place count 77 transition count 194
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 46 place count 76 transition count 192
Iterating global reduction 2 with 1 rules applied. Total rules applied 47 place count 76 transition count 192
Applied a total of 47 rules in 10 ms. Remains 76 /98 variables (removed 22) and now considering 192/244 (removed 52) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 76/98 places, 192/244 transitions.
[2026-05-25 10:40:48] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 54=1, 84=1, 114=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 55=1, 101=1, 116=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[11]
Current structural bounds on expressions (after cover walk) : Max Seen:[23] Max Struct:[+inf]
[2026-05-25 10:40:48] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
// Phase 1: matrix 118 rows 76 cols
[2026-05-25 10:40:48] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[23] Max Struct:[+inf]
RANDOM walk for 1000002 steps (2 resets) in 1075 ms. (929 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 558 ms. (1788 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[913] Max Struct:[+inf]
[2026-05-25 10:40:50] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:40:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:40:50] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:40:50] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:40:50] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:40:50] [INFO ] [Real]Added 17 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:40:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:40:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:40:50] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:40:50] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:40:50] [INFO ] Computed and/alt/rep : 57/184/51 causal constraints (skipped 65 transitions) in 6 ms.
[2026-05-25 10:40:50] [INFO ] Added : 5 causal constraints over 3 iterations in 39 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[913] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[913] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:40:50] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:40:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:40:50] [INFO ] Implicit Places using invariants in 54 ms returned []
[2026-05-25 10:40:50] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:40:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:40:50] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:40:50] [INFO ] Implicit Places using invariants and state equation in 162 ms returned []
Implicit Place search using SMT with State Equation took 216 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:40:50] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:40:50] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:40:50] [INFO ] Invariant cache hit.
[2026-05-25 10:40:50] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4064 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:40:59] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:40:59] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 288 constraints, problems are : Problem set: 0 solved, 190 unsolved in 25222 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 29326ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 29326ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29549 ms. Remains : 76/76 places, 192/192 transitions.
[2026-05-25 10:41:20] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 54=1, 84=1, 114=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 55=1, 101=1, 116=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[913] Max Struct:[+inf]
[2026-05-25 10:41:20] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:20] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[913] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1043 ms. (957 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 565 ms. (1766 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[913] Max Struct:[+inf]
[2026-05-25 10:41:21] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:41:21] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:41:22] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:41:22] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:41:22] [INFO ] [Real]Added 17 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:41:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:41:22] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:41:22] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:41:22] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:41:22] [INFO ] Computed and/alt/rep : 57/184/51 causal constraints (skipped 65 transitions) in 5 ms.
[2026-05-25 10:41:22] [INFO ] Added : 5 causal constraints over 3 iterations in 28 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[913] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[913] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:41:22] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:41:22] [INFO ] Implicit Places using invariants in 59 ms returned []
[2026-05-25 10:41:22] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:41:22] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:41:22] [INFO ] Implicit Places using invariants and state equation in 167 ms returned []
Implicit Place search using SMT with State Equation took 226 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:41:22] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:41:22] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:22] [INFO ] Invariant cache hit.
[2026-05-25 10:41:22] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4059 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:41:30] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:41:30] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 288 constraints, problems are : Problem set: 0 solved, 190 unsolved in 25183 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 29297ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 29297ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29532 ms. Remains : 76/76 places, 192/192 transitions.
[2026-05-25 10:41:51] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 54=1, 84=1, 114=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 55=1, 101=1, 116=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[11]
Current structural bounds on expressions (after cover walk) : Max Seen:[913] Max Struct:[+inf]
[2026-05-25 10:41:51] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:41:51] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:41:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1757200954810716478.gal : 1 ms
[2026-05-25 10:41:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18373030550041169594.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality1757200954810716478.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18373030550041169594.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality18373030550041169594.prop.
RANDOM walk for 40000 steps (8 resets) in 67 ms. (588 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 29 ms. (1333 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1040
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1040 after 155244
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :155244 after 1.77406e+08
Interrupted probabilistic random walk after 2037101 steps, run timeout after 3001 ms. (steps per millisecond=678 ) properties seen :0 out of 1
Probabilistic random walk after 2037101 steps, saw 1287114 distinct states, run finished after 3001 ms. (steps per millisecond=678 ) properties seen :0
[2026-05-25 10:41:54] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:54] [INFO ] Invariant cache hit.
[2026-05-25 10:41:54] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 5/76 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/170 variables, 52/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/170 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/176 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/187 variables, 10/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/187 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/191 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/191 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/194 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 93 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/71 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 5/76 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
SDD size :1.77406e+08 after 2.77281e+12
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 94/170 variables, 52/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/170 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/176 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/176 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 11/187 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/187 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/191 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/191 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/194 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 99 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 208ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 782 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
RANDOM walk for 40006 steps (8 resets) in 95 ms. (416 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2040013 steps, run timeout after 3001 ms. (steps per millisecond=679 ) properties seen :0 out of 1
Probabilistic random walk after 2040013 steps, saw 1289192 distinct states, run finished after 3001 ms. (steps per millisecond=679 ) properties seen :0
[2026-05-25 10:41:58] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:58] [INFO ] Invariant cache hit.
[2026-05-25 10:41:58] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 5/76 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/170 variables, 52/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/170 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/176 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/187 variables, 10/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/187 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/191 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/191 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/194 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 121 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/71 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 5/76 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 94/170 variables, 52/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/170 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/176 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/176 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 11/187 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/187 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/191 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/191 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/194 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 91 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 225ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 772 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:41:59] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:41:59] [INFO ] Implicit Places using invariants in 59 ms returned []
[2026-05-25 10:41:59] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:41:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:41:59] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:42:00] [INFO ] Implicit Places using invariants and state equation in 160 ms returned []
Implicit Place search using SMT with State Equation took 232 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:42:00] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:42:00] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:42:00] [INFO ] Invariant cache hit.
[2026-05-25 10:42:00] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3939 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:42:08] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:42:08] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.77281e+12 after 2.96599e+17
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 288 constraints, problems are : Problem set: 0 solved, 190 unsolved in 25341 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 29332ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 29333ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29571 ms. Remains : 76/76 places, 192/192 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 74 transitions
Reduce isomorphic transitions removed 74 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 76 transition count 111
Reduce places removed 7 places and 0 transitions.
Iterating post reduction 1 with 7 rules applied. Total rules applied 88 place count 69 transition count 111
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 13 Pre rules applied. Total rules applied 88 place count 69 transition count 98
Deduced a syphon composed of 13 places in 0 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 2 with 26 rules applied. Total rules applied 114 place count 56 transition count 98
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 144 place count 41 transition count 83
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 151 place count 34 transition count 69
Iterating global reduction 2 with 7 rules applied. Total rules applied 158 place count 34 transition count 69
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 165 place count 27 transition count 55
Iterating global reduction 2 with 7 rules applied. Total rules applied 172 place count 27 transition count 55
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 179 place count 20 transition count 41
Iterating global reduction 2 with 7 rules applied. Total rules applied 186 place count 20 transition count 41
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 193 place count 20 transition count 34
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 193 place count 20 transition count 33
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 195 place count 19 transition count 33
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 197 place count 18 transition count 33
Applied a total of 197 rules in 10 ms. Remains 18 /76 variables (removed 58) and now considering 33/192 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 33 rows 18 cols
[2026-05-25 10:42:29] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:42:29] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:42:29] [INFO ] After 29ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:42:29] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:42:29] [INFO ] After 7ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:42:29] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:42:29] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:42:29] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:42:29] [INFO ] After 41ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:42:29] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:42:29] [INFO ] Flatten gal took : 0 ms
[2026-05-25 10:42:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6915725383188253473.gal : 0 ms
[2026-05-25 10:42:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality17565357553625289588.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality6915725383188253473.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality17565357553625289588.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality17565357553625289588.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 11556
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :11556 after 7.75751e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :7.75751e+06 after 6.04406e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.04406e+07 after 3.13809e+08
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :3.13809e+08 after 1.41049e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.41049e+09 after 5.96009e+09
Detected timeout of ITS tools.
[2026-05-25 10:42:41] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:42:41] [INFO ] Applying decomposition
[2026-05-25 10:42:41] [INFO ] Flatten gal took : 4 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph5511932822442055324.txt' '-o' '/tmp/graph5511932822442055324.bin' '-w' '/tmp/graph5511932822442055324.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5511932822442055324.bin' '-l' '-1' '-v' '-w' '/tmp/graph5511932822442055324.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:42:41] [INFO ] Decomposing Gal with order
[2026-05-25 10:42:41] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:42:41] [INFO ] Removed a total of 324 redundant transitions.
[2026-05-25 10:42:41] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:42:41] [INFO ] Fuse similar labels procedure discarded/fused a total of 95 labels/synchronizations in 2 ms.
[2026-05-25 10:42:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15762602873768858842.gal : 1 ms
[2026-05-25 10:42:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality995974656875813426.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality15762602873768858842.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality995974656875813426.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...307
Loading property file /tmp/ReachabilityCardinality995974656875813426.prop.
Detected timeout of ITS tools.
[2026-05-25 10:42:44] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:42:44] [INFO ] Applying decomposition
[2026-05-25 10:42:44] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph17871560811573343194.txt' '-o' '/tmp/graph17871560811573343194.bin' '-w' '/tmp/graph17871560811573343194.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph17871560811573343194.bin' '-l' '-1' '-v' '-w' '/tmp/graph17871560811573343194.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:42:44] [INFO ] Decomposing Gal with order
[2026-05-25 10:42:44] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:42:44] [INFO ] Removed a total of 28 redundant transitions.
[2026-05-25 10:42:44] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:42:44] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 10:42:44] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14071280017121263487.gal : 0 ms
[2026-05-25 10:42:44] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9427698108493079277.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality14071280017121263487.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9427698108493079277.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality9427698108493079277.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 126
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :126 after 4323
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :4323 after 414579
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :414579 after 1.18053e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.18053e+06 after 2.71244e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.71244e+06 after 5.77624e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.77624e+06 after 1.19039e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.19039e+07 after 2.41591e+07
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30177 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[913] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b032-UpperBounds-14 in 131065 ms.
[2026-05-25 10:42:59] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:42:59] [INFO ] Applying decomposition
[2026-05-25 10:42:59] [INFO ] Flatten gal took : 6 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph12086657370670515856.txt' '-o' '/tmp/graph12086657370670515856.bin' '-w' '/tmp/graph12086657370670515856.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12086657370670515856.bin' '-l' '-1' '-v' '-w' '/tmp/graph12086657370670515856.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:42:59] [INFO ] Decomposing Gal with order
[2026-05-25 10:42:59] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:42:59] [INFO ] Removed a total of 417 redundant transitions.
[2026-05-25 10:42:59] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:42:59] [INFO ] Fuse similar labels procedure discarded/fused a total of 115 labels/synchronizations in 2 ms.
[2026-05-25 10:42:59] [INFO ] Time to serialize gal into /tmp/UpperBounds7124327734174631528.gal : 1 ms
[2026-05-25 10:42:59] [INFO ] Time to serialize properties into /tmp/UpperBounds1960401802975237689.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/UpperBounds7124327734174631528.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds1960401802975237689.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...283
Loading property file /tmp/UpperBounds1960401802975237689.prop.
BK_TIME_CONFINEMENT_REACHED
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="FunctionPointer-PT-b032"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"
# this is specific to your benchmark or test
export BIN_DIR="$HOME/BenchKit/bin"
# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool gold2025"
echo " Input is FunctionPointer-PT-b032, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r159-tall-177961079800012"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/FunctionPointer-PT-b032.tgz
mv FunctionPointer-PT-b032 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "UpperBounds.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;