About the Execution of 2025-gold for FunctionPointer-PT-b004
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-177961079700009.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-b004, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r159-tall-177961079700009
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 816K
-rw-r--r-- 1 mcc users 6.8K Mar 7 07:29 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Mar 7 07:29 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K Mar 7 07:29 CTLFireability.txt
-rw-r--r-- 1 mcc users 56K Mar 7 07:29 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Mar 15 10:23 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 15 10:23 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 15 10:23 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 15 10:23 LTLFireability.xml
-rw-r--r-- 1 mcc users 10K Mar 7 07:29 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 104K Mar 7 07:29 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.7K Mar 7 07:29 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 75K Mar 7 07:29 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:23 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 10:23 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-b004-UpperBounds-00
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-01
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-02
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-03
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-04
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-05
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-06
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-07
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-08
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-09
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-10
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-11
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-12
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-13
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-14
FORMULA_NAME FunctionPointer-PT-b004-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1779699871837
Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FunctionPointer-PT-b004
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 09:04:33] [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 09:04:33] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 09:04:33] [INFO ] Load time of PNML (sax parser for PT used): 111 ms
[2026-05-25 09:04:33] [INFO ] Transformed 306 places.
[2026-05-25 09:04:33] [INFO ] Transformed 840 transitions.
[2026-05-25 09:04:33] [INFO ] Parsed PT model containing 306 places and 840 transitions and 3392 arcs in 199 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Deduced a syphon composed of 84 places in 5 ms
Reduce places removed 84 places and 192 transitions.
FORMULA FunctionPointer-PT-b004-UpperBounds-02 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b004-UpperBounds-04 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b004-UpperBounds-15 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, 0] Max Struct:[+inf, +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, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:04:33] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
// Phase 1: matrix 414 rows 222 cols
[2026-05-25 09:04:33] [INFO ] Computed 4 invariants in 16 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[4, +inf, +inf, +inf, 1, +inf, +inf, +inf, +inf, 4, +inf, +inf, +inf]
RANDOM walk for 10000 steps (15 resets) in 71 ms. (138 steps per ms)
FORMULA FunctionPointer-PT-b004-UpperBounds-11 4 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FunctionPointer-PT-b004-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FunctionPointer-PT-b004-UpperBounds-00 4 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 100010 steps (31 resets) in 151 ms. (657 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[4, 15, 1, 10, 14, 1, 9, 6, 2, 17] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:04:33] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
[2026-05-25 09:04:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:33] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 09:04:33] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 5 ms returned sat
[2026-05-25 09:04:34] [INFO ] [Real]Absence check using state equation in 132 ms returned sat
[2026-05-25 09:04:34] [INFO ] State equation strengthened by 65 read => feed constraints.
[2026-05-25 09:04:34] [INFO ] [Real]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 09:04:34] [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 09:04:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:34] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:34] [INFO ] [Nat]Absence check using state equation in 92 ms returned sat
[2026-05-25 09:04:34] [INFO ] [Nat]Added 65 Read/Feed constraints in 16 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:34] [INFO ] Deduced a trap composed of 21 places in 146 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:34] [INFO ] Deduced a trap composed of 51 places in 120 ms of which 14 ms to minimize.
[2026-05-25 09:04:34] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 330 ms
[2026-05-25 09:04:34] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 57 ms.
[2026-05-25 09:04:34] [INFO ] Added : 2 causal constraints over 1 iterations in 119 ms. Result :sat
Minimization took 81 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:34] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:34] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 4 ms returned sat
[2026-05-25 09:04:34] [INFO ] [Real]Absence check using state equation in 82 ms returned sat
[2026-05-25 09:04:34] [INFO ] [Real]Added 65 Read/Feed constraints in 20 ms returned sat
[2026-05-25 09:04:34] [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 09:04:35] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Nat]Absence check using state equation in 77 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Nat]Added 65 Read/Feed constraints in 16 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:35] [INFO ] Deduced a trap composed of 21 places in 113 ms of which 12 ms to minimize.
[2026-05-25 09:04:35] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 141 ms
[2026-05-25 09:04:35] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 50 ms.
[2026-05-25 09:04:35] [INFO ] Added : 1 causal constraints over 1 iterations in 112 ms. Result :sat
Minimization took 75 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:35] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Real]Absence check using state equation in 81 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:04:35] [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 09:04:35] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Nat]Absence check using state equation in 72 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Nat]Added 65 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:04:35] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 39 ms.
[2026-05-25 09:04:35] [INFO ] Added : 2 causal constraints over 1 iterations in 84 ms. Result :sat
Minimization took 78 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:35] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:35] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Real]Absence check using state equation in 75 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Real]Added 65 Read/Feed constraints in 22 ms returned sat
[2026-05-25 09:04:36] [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 09:04:36] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Nat]Absence check using state equation in 88 ms returned sat
[2026-05-25 09:04:36] [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 09:04:36] [INFO ] Deduced a trap composed of 21 places in 120 ms of which 11 ms to minimize.
[2026-05-25 09:04:36] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 151 ms
[2026-05-25 09:04:36] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 38 ms.
[2026-05-25 09:04:36] [INFO ] Added : 2 causal constraints over 1 iterations in 87 ms. Result :sat
Minimization took 84 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:36] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Real]Absence check using state equation in 79 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:04:36] [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 09:04:36] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:36] [INFO ] [Nat]Absence check using state equation in 70 ms returned sat
[2026-05-25 09:04:36] [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 09:04:37] [INFO ] Deduced a trap composed of 21 places in 136 ms of which 8 ms to minimize.
[2026-05-25 09:04:37] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 159 ms
[2026-05-25 09:04:37] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 42 ms.
[2026-05-25 09:04:37] [INFO ] Added : 1 causal constraints over 1 iterations in 86 ms. Result :sat
Minimization took 83 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:37] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Real]Absence check using state equation in 85 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:04:37] [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 09:04:37] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Nat]Absence check using state equation in 76 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Nat]Added 65 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:04:37] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 29 ms.
[2026-05-25 09:04:37] [INFO ] Added : 2 causal constraints over 1 iterations in 87 ms. Result :sat
Minimization took 78 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:37] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Real]Absence check using state equation in 78 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Real]Added 65 Read/Feed constraints in 21 ms returned sat
[2026-05-25 09:04:37] [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 09:04:37] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:37] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Nat]Absence check using state equation in 73 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Nat]Added 65 Read/Feed constraints in 22 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:38] [INFO ] Deduced a trap composed of 21 places in 129 ms of which 12 ms to minimize.
[2026-05-25 09:04:38] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 173 ms
[2026-05-25 09:04:38] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 29 ms.
[2026-05-25 09:04:38] [INFO ] Added : 2 causal constraints over 1 iterations in 73 ms. Result :sat
Minimization took 77 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:38] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Real]Absence check using state equation in 78 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Real]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:04:38] [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 09:04:38] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Nat]Absence check using state equation in 75 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Nat]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:04:38] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 26 ms.
[2026-05-25 09:04:38] [INFO ] Added : 2 causal constraints over 1 iterations in 71 ms. Result :sat
Minimization took 74 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:38] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:38] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Real]Absence check using state equation in 82 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:04:39] [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 09:04:39] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Nat]Absence check using state equation in 77 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Nat]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:04:39] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 24 ms.
[2026-05-25 09:04:39] [INFO ] Added : 2 causal constraints over 1 iterations in 63 ms. Result :sat
Minimization took 83 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:04:39] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Real]Absence check using state equation in 69 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:04:39] [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 09:04:39] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Nat]Absence check using state equation in 63 ms returned sat
[2026-05-25 09:04:39] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 09:04:39] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 22 ms.
[2026-05-25 09:04:39] [INFO ] Added : 1 causal constraints over 1 iterations in 66 ms. Result :sat
Minimization took 74 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[4, 15, 1, 10, 14, 1, 9, 6, 2, 17] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[4, 15, 1, 10, 14, 1, 9, 6, 2, 17] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +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 43 transitions
Reduce isomorphic transitions removed 43 transitions.
Iterating post reduction 0 with 43 rules applied. Total rules applied 44 place count 191 transition count 605
Discarding 26 places :
Symmetric choice reduction at 1 with 26 rule applications. Total rules 70 place count 165 transition count 451
Iterating global reduction 1 with 26 rules applied. Total rules applied 96 place count 165 transition count 451
Ensure Unique test removed 24 transitions
Reduce isomorphic transitions removed 24 transitions.
Iterating post reduction 1 with 24 rules applied. Total rules applied 120 place count 165 transition count 427
Discarding 14 places :
Symmetric choice reduction at 2 with 14 rule applications. Total rules 134 place count 151 transition count 399
Iterating global reduction 2 with 14 rules applied. Total rules applied 148 place count 151 transition count 399
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 153 place count 146 transition count 389
Iterating global reduction 2 with 5 rules applied. Total rules applied 158 place count 146 transition count 389
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 163 place count 141 transition count 369
Iterating global reduction 2 with 5 rules applied. Total rules applied 168 place count 141 transition count 369
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 172 place count 137 transition count 361
Iterating global reduction 2 with 4 rules applied. Total rules applied 176 place count 137 transition count 361
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 180 place count 133 transition count 345
Iterating global reduction 2 with 4 rules applied. Total rules applied 184 place count 133 transition count 345
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 188 place count 129 transition count 329
Iterating global reduction 2 with 4 rules applied. Total rules applied 192 place count 129 transition count 329
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 196 place count 125 transition count 321
Iterating global reduction 2 with 4 rules applied. Total rules applied 200 place count 125 transition count 321
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 204 place count 121 transition count 313
Iterating global reduction 2 with 4 rules applied. Total rules applied 208 place count 121 transition count 313
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 212 place count 117 transition count 305
Iterating global reduction 2 with 4 rules applied. Total rules applied 216 place count 117 transition count 305
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 220 place count 113 transition count 297
Iterating global reduction 2 with 4 rules applied. Total rules applied 224 place count 113 transition count 297
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 227 place count 110 transition count 291
Iterating global reduction 2 with 3 rules applied. Total rules applied 230 place count 110 transition count 291
Drop transitions (Redundant composition of simpler transitions.) removed 8 transitions
Redundant transition composition rules discarded 8 transitions
Iterating global reduction 2 with 8 rules applied. Total rules applied 238 place count 110 transition count 283
Applied a total of 238 rules in 118 ms. Remains 110 /222 variables (removed 112) and now considering 283/648 (removed 365) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 125 ms. Remains : 110/222 places, 283/648 transitions.
[2026-05-25 09:04:39] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 95=1, 132=1, 169=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {26=1, 91=1, 144=1, 179=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 61 ms. (steps per millisecond=163 ) properties (out of 10) seen :[1, 3, 2, 4, 3, 3, 3, 2, 3, 5]
Current structural bounds on expressions (after cover walk) : Max Seen:[4, 15, 2, 10, 14, 3, 9, 6, 3, 17] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:04:40] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:04:40] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[4, 15, 2, 10, 14, 3, 9, 6, 3, 17] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1618 ms. (617 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 4782 ms. (2090 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[4, 641, 11, 1387, 1178, 168, 1246, 812, 145, 1270] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:04:46] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:04:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:46] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:46] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:04:46] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:04:46] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:04:46] [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 09:04:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:04:46] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:04:46] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:46] [INFO ] Deduced a trap composed of 17 places in 69 ms of which 6 ms to minimize.
[2026-05-25 09:04:46] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 87 ms
[2026-05-25 09:04:46] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 11 ms.
[2026-05-25 09:04:46] [INFO ] Added : 6 causal constraints over 2 iterations in 39 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:46] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:46] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:04:46] [INFO ] [Real]Added 29 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:04:46] [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 09:04:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:04:46] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:04:46] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:46] [INFO ] Deduced a trap composed of 17 places in 76 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:47] [INFO ] Deduced a trap composed of 20 places in 74 ms of which 6 ms to minimize.
[2026-05-25 09:04:47] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 172 ms
[2026-05-25 09:04:47] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 11 ms.
[2026-05-25 09:04:47] [INFO ] Added : 17 causal constraints over 5 iterations in 80 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:04:47] [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 09:04:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:04:47] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 12 ms.
[2026-05-25 09:04:47] [INFO ] Added : 20 causal constraints over 6 iterations in 88 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:04:47] [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 09:04:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:47] [INFO ] Deduced a trap composed of 17 places in 66 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:47] [INFO ] Deduced a trap composed of 20 places in 73 ms of which 7 ms to minimize.
[2026-05-25 09:04:47] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 156 ms
[2026-05-25 09:04:47] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:04:47] [INFO ] Added : 18 causal constraints over 4 iterations in 71 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:47] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:04:47] [INFO ] [Real]Added 29 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:04:47] [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 09:04:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:48] [INFO ] Deduced a trap composed of 17 places in 64 ms of which 6 ms to minimize.
[2026-05-25 09:04:48] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
[2026-05-25 09:04:48] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 14 ms.
[2026-05-25 09:04:48] [INFO ] Added : 16 causal constraints over 5 iterations in 83 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:48] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:04:48] [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 09:04:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:04:48] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 11 ms.
[2026-05-25 09:04:48] [INFO ] Added : 23 causal constraints over 7 iterations in 100 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:48] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:04:48] [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 09:04:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:48] [INFO ] Deduced a trap composed of 17 places in 66 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:48] [INFO ] Deduced a trap composed of 20 places in 61 ms of which 7 ms to minimize.
[2026-05-25 09:04:48] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 143 ms
[2026-05-25 09:04:48] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 10 ms.
[2026-05-25 09:04:48] [INFO ] Added : 20 causal constraints over 5 iterations in 71 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:48] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:48] [INFO ] [Real]Absence check using state equation in 42 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Real]Added 29 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:04:49] [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 09:04:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:49] [INFO ] Deduced a trap composed of 17 places in 71 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:49] [INFO ] Deduced a trap composed of 17 places in 56 ms of which 3 ms to minimize.
[2026-05-25 09:04:49] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 143 ms
[2026-05-25 09:04:49] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 7 ms.
[2026-05-25 09:04:49] [INFO ] Added : 9 causal constraints over 3 iterations in 48 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:49] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Real]Added 29 Read/Feed constraints in 9 ms returned sat
[2026-05-25 09:04:49] [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 09:04:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:49] [INFO ] Deduced a trap composed of 17 places in 64 ms of which 3 ms to minimize.
[2026-05-25 09:04:49] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 73 ms
[2026-05-25 09:04:49] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:04:49] [INFO ] Added : 28 causal constraints over 6 iterations in 76 ms. Result :sat
Minimization took 48 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:04:49] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:04:49] [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 09:04:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:04:49] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:04:49] [INFO ] Deduced a trap composed of 17 places in 66 ms of which 6 ms to minimize.
[2026-05-25 09:04:49] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
[2026-05-25 09:04:49] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:04:49] [INFO ] Added : 9 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[4, 641, 11, 1387, 1178, 168, 1246, 812, 145, 1270] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[4, 641, 11, 1387, 1178, 168, 1246, 812, 145, 1270] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 9 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 110/110 places, 283/283 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 8 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
[2026-05-25 09:05:06] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:05:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:05:06] [INFO ] Implicit Places using invariants in 112 ms returned []
[2026-05-25 09:05:06] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:05:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:05:06] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:05:06] [INFO ] Implicit Places using invariants and state equation in 249 ms returned []
Implicit Place search using SMT with State Equation took 367 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:05:07] [INFO ] Redundant transitions in 14 ms returned []
Running 281 sub problems to find dead transitions.
[2026-05-25 09:05:07] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:05:07] [INFO ] Invariant cache hit.
[2026-05-25 09:05:07] [INFO ] State equation strengthened by 29 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 5 (OVERLAPS) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 142 constraints, problems are : Problem set: 0 solved, 281 unsolved in 6571 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 281/423 constraints. Problems are: Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:20] [INFO ] Deduced a trap along path composed of 3 places in 37 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:20] [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 09:05:20] [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 09:05:20] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:20] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 5/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 428 constraints, problems are : Problem set: 0 solved, 281 unsolved in 26704 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 33474ms problems are : Problem set: 0 solved, 281 unsolved
Search for dead transitions found 0 dead transitions in 33482ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33897 ms. Remains : 110/110 places, 283/283 transitions.
[2026-05-25 09:05:40] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 95=1, 132=1, 169=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 91=1, 144=1, 179=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 86 ms. (steps per millisecond=116 ) properties (out of 10) seen :[2, 3, 2, 3, 4, 3, 3, 3, 4, 8]
Current structural bounds on expressions (after cover walk) : Max Seen:[4, 641, 11, 1387, 1178, 168, 1246, 812, 145, 1270] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:05:40] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:05:40] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[4, 641, 11, 1387, 1178, 168, 1246, 812, 145, 1270] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1397 ms. (715 steps per ms)
BEST_FIRST walk for 10000009 steps (20 resets) in 4894 ms. (2042 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[4, 645, 793, 1387, 1178, 197, 1246, 812, 145, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:05:46] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:05:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:05:47] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:05:47] [INFO ] [Real]Added 29 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:05:47] [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 09:05:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:47] [INFO ] Deduced a trap composed of 17 places in 63 ms of which 7 ms to minimize.
[2026-05-25 09:05:47] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 74 ms
[2026-05-25 09:05:47] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:05:47] [INFO ] Added : 6 causal constraints over 2 iterations in 34 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:05:47] [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 09:05:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:47] [INFO ] Deduced a trap composed of 17 places in 70 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:47] [INFO ] Deduced a trap composed of 20 places in 57 ms of which 6 ms to minimize.
[2026-05-25 09:05:47] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 142 ms
[2026-05-25 09:05:47] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:05:47] [INFO ] Added : 17 causal constraints over 5 iterations in 66 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:05:47] [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 09:05:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:47] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:05:47] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:05:47] [INFO ] Added : 20 causal constraints over 6 iterations in 75 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:47] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:48] [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 09:05:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:48] [INFO ] Deduced a trap composed of 17 places in 56 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:48] [INFO ] Deduced a trap composed of 20 places in 61 ms of which 7 ms to minimize.
[2026-05-25 09:05:48] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 142 ms
[2026-05-25 09:05:48] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 7 ms.
[2026-05-25 09:05:48] [INFO ] Added : 18 causal constraints over 4 iterations in 69 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:48] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:48] [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 09:05:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:48] [INFO ] Deduced a trap composed of 17 places in 62 ms of which 6 ms to minimize.
[2026-05-25 09:05:48] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 71 ms
[2026-05-25 09:05:48] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:05:48] [INFO ] Added : 16 causal constraints over 5 iterations in 66 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:48] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Added 29 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:05:48] [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 09:05:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:05:48] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 13 ms.
[2026-05-25 09:05:48] [INFO ] Added : 23 causal constraints over 7 iterations in 87 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:48] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:05:48] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:48] [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 09:05:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:49] [INFO ] Deduced a trap composed of 17 places in 54 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:49] [INFO ] Deduced a trap composed of 20 places in 61 ms of which 7 ms to minimize.
[2026-05-25 09:05:49] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 131 ms
[2026-05-25 09:05:49] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:05:49] [INFO ] Added : 20 causal constraints over 5 iterations in 79 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:49] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:05:49] [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 09:05:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:49] [INFO ] Deduced a trap composed of 17 places in 63 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:49] [INFO ] Deduced a trap composed of 17 places in 58 ms of which 3 ms to minimize.
[2026-05-25 09:05:49] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 143 ms
[2026-05-25 09:05:49] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:05:49] [INFO ] Added : 9 causal constraints over 3 iterations in 53 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:49] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:49] [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 09:05:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:49] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:49] [INFO ] Deduced a trap composed of 17 places in 64 ms of which 3 ms to minimize.
[2026-05-25 09:05:49] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 81 ms
[2026-05-25 09:05:49] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 11 ms.
[2026-05-25 09:05:49] [INFO ] Added : 28 causal constraints over 6 iterations in 74 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:50] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:50] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:05:50] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:50] [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 09:05:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:50] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:05:50] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:50] [INFO ] Deduced a trap composed of 17 places in 67 ms of which 6 ms to minimize.
[2026-05-25 09:05:50] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
[2026-05-25 09:05:50] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:05:50] [INFO ] Added : 9 causal constraints over 4 iterations in 59 ms. Result :sat
Minimization took 37 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[4, 645, 793, 1387, 1178, 197, 1246, 812, 145, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[4, 645, 793, 1387, 1178, 197, 1246, 812, 145, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 8 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 110/110 places, 283/283 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 8 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
[2026-05-25 09:06:10] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:06:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:06:11] [INFO ] Implicit Places using invariants in 166 ms returned []
[2026-05-25 09:06:11] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:06:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:06:11] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:06:11] [INFO ] Implicit Places using invariants and state equation in 215 ms returned []
Implicit Place search using SMT with State Equation took 382 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:06:11] [INFO ] Redundant transitions in 9 ms returned []
Running 281 sub problems to find dead transitions.
[2026-05-25 09:06:11] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:06:11] [INFO ] Invariant cache hit.
[2026-05-25 09:06:11] [INFO ] State equation strengthened by 29 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 5 (OVERLAPS) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 142 constraints, problems are : Problem set: 0 solved, 281 unsolved in 5989 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 281/423 constraints. Problems are: Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:23] [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 09:06:23] [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 09:06:23] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:23] [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 09:06:23] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 5/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 428 constraints, problems are : Problem set: 0 solved, 281 unsolved in 26376 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 32459ms problems are : Problem set: 0 solved, 281 unsolved
Search for dead transitions found 0 dead transitions in 32461ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 32867 ms. Remains : 110/110 places, 283/283 transitions.
[2026-05-25 09:06:43] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 95=1, 132=1, 169=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 91=1, 144=1, 179=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 34 ms. (steps per millisecond=294 ) properties (out of 10) seen :[4, 3, 2, 3, 4, 3, 2, 2, 3, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[4, 645, 793, 1387, 1178, 197, 1246, 812, 145, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:06:43] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:06:43] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[4, 645, 793, 1387, 1178, 197, 1246, 812, 145, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1282 ms. (779 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 4785 ms. (2089 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[4, 660, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:06:50] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:06:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:50] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:50] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:06:50] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:50] [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 09:06:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:50] [INFO ] Deduced a trap composed of 17 places in 64 ms of which 6 ms to minimize.
[2026-05-25 09:06:50] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 83 ms
[2026-05-25 09:06:50] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 10 ms.
[2026-05-25 09:06:50] [INFO ] Added : 6 causal constraints over 2 iterations in 41 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:50] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:50] [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 09:06:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Nat]Added 29 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:50] [INFO ] Deduced a trap composed of 17 places in 67 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:50] [INFO ] Deduced a trap composed of 20 places in 70 ms of which 6 ms to minimize.
[2026-05-25 09:06:50] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 156 ms
[2026-05-25 09:06:50] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:06:50] [INFO ] Added : 17 causal constraints over 5 iterations in 74 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:50] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:06:50] [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 09:06:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:06:50] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:50] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:06:50] [INFO ] Added : 20 causal constraints over 6 iterations in 73 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:51] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:51] [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 09:06:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Nat]Absence check using state equation in 42 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:51] [INFO ] Deduced a trap composed of 17 places in 61 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:51] [INFO ] Deduced a trap composed of 20 places in 66 ms of which 7 ms to minimize.
[2026-05-25 09:06:51] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 145 ms
[2026-05-25 09:06:51] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:06:51] [INFO ] Added : 18 causal constraints over 4 iterations in 65 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:51] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Real]Added 29 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:06:51] [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 09:06:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:51] [INFO ] Deduced a trap composed of 17 places in 66 ms of which 6 ms to minimize.
[2026-05-25 09:06:51] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 77 ms
[2026-05-25 09:06:51] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:06:51] [INFO ] Added : 16 causal constraints over 5 iterations in 63 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:51] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:51] [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 09:06:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:06:51] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:06:51] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:06:51] [INFO ] Added : 23 causal constraints over 7 iterations in 79 ms. Result :sat
Minimization took 44 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:52] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:52] [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 09:06:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Nat]Added 29 Read/Feed constraints in 8 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:52] [INFO ] Deduced a trap composed of 17 places in 62 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:52] [INFO ] Deduced a trap composed of 20 places in 64 ms of which 6 ms to minimize.
[2026-05-25 09:06:52] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 143 ms
[2026-05-25 09:06:52] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:06:52] [INFO ] Added : 20 causal constraints over 5 iterations in 68 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:52] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:52] [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 09:06:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:52] [INFO ] Deduced a trap composed of 17 places in 69 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:52] [INFO ] Deduced a trap composed of 17 places in 60 ms of which 4 ms to minimize.
[2026-05-25 09:06:52] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 144 ms
[2026-05-25 09:06:52] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:06:52] [INFO ] Added : 9 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:52] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:06:52] [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 09:06:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:52] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:52] [INFO ] Deduced a trap composed of 17 places in 57 ms of which 5 ms to minimize.
[2026-05-25 09:06:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 66 ms
[2026-05-25 09:06:52] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:06:53] [INFO ] Added : 28 causal constraints over 6 iterations in 71 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:53] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:53] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:06:53] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:53] [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 09:06:53] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:53] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:06:53] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:53] [INFO ] Deduced a trap composed of 17 places in 65 ms of which 6 ms to minimize.
[2026-05-25 09:06:53] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 09:06:53] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:06:53] [INFO ] Added : 9 causal constraints over 4 iterations in 54 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[4, 660, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[4, 660, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 8 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 110/110 places, 283/283 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 7 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
[2026-05-25 09:07:17] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:07:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:07:17] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 09:07:17] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:07:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:07:17] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:07:17] [INFO ] Implicit Places using invariants and state equation in 196 ms returned []
Implicit Place search using SMT with State Equation took 267 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:07:17] [INFO ] Redundant transitions in 6 ms returned []
Running 281 sub problems to find dead transitions.
[2026-05-25 09:07:17] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:07:17] [INFO ] Invariant cache hit.
[2026-05-25 09:07:17] [INFO ] State equation strengthened by 29 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 5 (OVERLAPS) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 142 constraints, problems are : Problem set: 0 solved, 281 unsolved in 6205 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 281/423 constraints. Problems are: Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:30] [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 09:07:30] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:30] [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 09:07:30] [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 09:07:30] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 5/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 428 constraints, problems are : Problem set: 0 solved, 281 unsolved in 26464 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 32768ms problems are : Problem set: 0 solved, 281 unsolved
Search for dead transitions found 0 dead transitions in 32769ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33059 ms. Remains : 110/110 places, 283/283 transitions.
[2026-05-25 09:07:50] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 95=1, 132=1, 169=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 91=1, 144=1, 179=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 10) seen :[2, 3, 0, 3, 2, 0, 2, 3, 2, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[4, 660, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:07:50] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:07:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[4, 660, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1344 ms. (743 steps per ms)
BEST_FIRST walk for 10000009 steps (20 resets) in 4906 ms. (2037 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[4, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:07:56] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:07:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:56] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:56] [INFO ] [Real]Absence check using state equation in 42 ms returned sat
[2026-05-25 09:07:56] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:07:56] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:07:56] [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 09:07:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:56] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:07:56] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:57] [INFO ] Deduced a trap composed of 17 places in 73 ms of which 6 ms to minimize.
[2026-05-25 09:07:57] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 84 ms
[2026-05-25 09:07:57] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:07:57] [INFO ] Added : 6 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 09:07:57] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:07:57] [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 09:07:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:57] [INFO ] Deduced a trap composed of 17 places in 70 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:57] [INFO ] Deduced a trap composed of 20 places in 65 ms of which 7 ms to minimize.
[2026-05-25 09:07:57] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 151 ms
[2026-05-25 09:07:57] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:07:57] [INFO ] Added : 17 causal constraints over 5 iterations in 65 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:57] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:07:57] [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 09:07:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:07:57] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:07:57] [INFO ] Added : 20 causal constraints over 6 iterations in 73 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:57] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:57] [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 09:07:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:07:57] [INFO ] [Nat]Added 29 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:57] [INFO ] Deduced a trap composed of 17 places in 65 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:58] [INFO ] Deduced a trap composed of 20 places in 64 ms of which 7 ms to minimize.
[2026-05-25 09:07:58] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 149 ms
[2026-05-25 09:07:58] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 7 ms.
[2026-05-25 09:07:58] [INFO ] Added : 18 causal constraints over 4 iterations in 75 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:58] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:07:58] [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 09:07:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:58] [INFO ] Deduced a trap composed of 17 places in 64 ms of which 6 ms to minimize.
[2026-05-25 09:07:58] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 74 ms
[2026-05-25 09:07:58] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:07:58] [INFO ] Added : 16 causal constraints over 5 iterations in 63 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:58] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Real]Added 29 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:07:58] [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 09:07:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:07:58] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:07:58] [INFO ] Added : 23 causal constraints over 7 iterations in 98 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:58] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:58] [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 09:07:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:07:58] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:59] [INFO ] Deduced a trap composed of 17 places in 74 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:59] [INFO ] Deduced a trap composed of 20 places in 73 ms of which 7 ms to minimize.
[2026-05-25 09:07:59] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 163 ms
[2026-05-25 09:07:59] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:07:59] [INFO ] Added : 20 causal constraints over 5 iterations in 66 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:07:59] [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 09:07:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:59] [INFO ] Deduced a trap composed of 17 places in 64 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:59] [INFO ] Deduced a trap composed of 17 places in 53 ms of which 4 ms to minimize.
[2026-05-25 09:07:59] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 132 ms
[2026-05-25 09:07:59] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:07:59] [INFO ] Added : 9 causal constraints over 3 iterations in 48 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:59] [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 09:07:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:59] [INFO ] Deduced a trap composed of 17 places in 56 ms of which 4 ms to minimize.
[2026-05-25 09:07:59] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 68 ms
[2026-05-25 09:07:59] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:07:59] [INFO ] Added : 28 causal constraints over 6 iterations in 77 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:07:59] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:59] [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 09:08:00] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:08:00] [INFO ] [Nat]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:08:00] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:08:00] [INFO ] Deduced a trap composed of 17 places in 58 ms of which 6 ms to minimize.
[2026-05-25 09:08:00] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 68 ms
[2026-05-25 09:08:00] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:08:00] [INFO ] Added : 9 causal constraints over 4 iterations in 52 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[4, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 17 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17 ms. Remains : 110/110 places, 283/283 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 8 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
[2026-05-25 09:08:24] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:08:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:08:24] [INFO ] Implicit Places using invariants in 75 ms returned []
[2026-05-25 09:08:24] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:08:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:08:24] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:08:24] [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 09:08:24] [INFO ] Redundant transitions in 2 ms returned []
Running 281 sub problems to find dead transitions.
[2026-05-25 09:08:24] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:08:24] [INFO ] Invariant cache hit.
[2026-05-25 09:08:24] [INFO ] State equation strengthened by 29 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 5 (OVERLAPS) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 142 constraints, problems are : Problem set: 0 solved, 281 unsolved in 6271 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 281/423 constraints. Problems are: Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:08:37] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:08:37] [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 09:08:37] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:08:37] [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 09:08:37] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 5/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 428 constraints, problems are : Problem set: 0 solved, 281 unsolved in 26302 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 32657ms problems are : Problem set: 0 solved, 281 unsolved
Search for dead transitions found 0 dead transitions in 32657ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 32975 ms. Remains : 110/110 places, 283/283 transitions.
[2026-05-25 09:08:57] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 95=1, 132=1, 169=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 91=1, 144=1, 179=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 10) seen :[0, 3, 2, 4, 0, 2, 2, 2, 4, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:08:57] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:08:57] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1338 ms. (746 steps per ms)
BEST_FIRST walk for 10000009 steps (20 resets) in 4778 ms. (2092 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:09:03] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:09:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:03] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:03] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:09:03] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:09:03] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:09:03] [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 09:09:03] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:03] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 09:09:03] [INFO ] [Nat]Added 29 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:03] [INFO ] Deduced a trap composed of 17 places in 70 ms of which 6 ms to minimize.
[2026-05-25 09:09:03] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 81 ms
[2026-05-25 09:09:03] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:09:03] [INFO ] Added : 5 causal constraints over 2 iterations in 33 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:03] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:03] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:09:03] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:09:03] [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 09:09:03] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:03] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:09:03] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:03] [INFO ] Deduced a trap composed of 17 places in 76 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:03] [INFO ] Deduced a trap composed of 20 places in 56 ms of which 6 ms to minimize.
[2026-05-25 09:09:03] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 147 ms
[2026-05-25 09:09:03] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 12 ms.
[2026-05-25 09:09:04] [INFO ] Added : 17 causal constraints over 5 iterations in 75 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:04] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:09:04] [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 09:09:04] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:09:04] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 7 ms.
[2026-05-25 09:09:04] [INFO ] Added : 20 causal constraints over 6 iterations in 72 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:04] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:09:04] [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 09:09:04] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:04] [INFO ] Deduced a trap composed of 17 places in 64 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:04] [INFO ] Deduced a trap composed of 20 places in 63 ms of which 6 ms to minimize.
[2026-05-25 09:09:04] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 151 ms
[2026-05-25 09:09:04] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:09:04] [INFO ] Added : 18 causal constraints over 4 iterations in 65 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:04] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Real]Added 29 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:09:04] [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 09:09:04] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:09:04] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:04] [INFO ] Deduced a trap composed of 17 places in 68 ms of which 6 ms to minimize.
[2026-05-25 09:09:04] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 79 ms
[2026-05-25 09:09:04] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:09:05] [INFO ] Added : 16 causal constraints over 5 iterations in 63 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:05] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:09:05] [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 09:09:05] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:09:05] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:09:05] [INFO ] Added : 23 causal constraints over 7 iterations in 94 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:05] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:09:05] [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 09:09:05] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:05] [INFO ] Deduced a trap composed of 17 places in 74 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:05] [INFO ] Deduced a trap composed of 20 places in 69 ms of which 7 ms to minimize.
[2026-05-25 09:09:05] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 159 ms
[2026-05-25 09:09:05] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:09:05] [INFO ] Added : 20 causal constraints over 5 iterations in 68 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:05] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:09:05] [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 09:09:05] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:09:05] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:05] [INFO ] Deduced a trap composed of 17 places in 63 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:06] [INFO ] Deduced a trap composed of 17 places in 72 ms of which 4 ms to minimize.
[2026-05-25 09:09:06] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 155 ms
[2026-05-25 09:09:06] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:09:06] [INFO ] Added : 9 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:06] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:09:06] [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 09:09:06] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:06] [INFO ] Deduced a trap composed of 17 places in 69 ms of which 3 ms to minimize.
[2026-05-25 09:09:06] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 86 ms
[2026-05-25 09:09:06] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 13 ms.
[2026-05-25 09:09:06] [INFO ] Added : 28 causal constraints over 6 iterations in 78 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:09:06] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:09:06] [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 09:09:06] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:09:06] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:06] [INFO ] Deduced a trap composed of 17 places in 67 ms of which 6 ms to minimize.
[2026-05-25 09:09:06] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 81 ms
[2026-05-25 09:09:06] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 10 ms.
[2026-05-25 09:09:06] [INFO ] Added : 9 causal constraints over 4 iterations in 53 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 6 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 110/110 places, 283/283 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Applied a total of 0 rules in 5 ms. Remains 110 /110 variables (removed 0) and now considering 283/283 (removed 0) transitions.
[2026-05-25 09:09:30] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:09:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:09:30] [INFO ] Implicit Places using invariants in 84 ms returned []
[2026-05-25 09:09:30] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:09:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:09:30] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:09:31] [INFO ] Implicit Places using invariants and state equation in 205 ms returned []
Implicit Place search using SMT with State Equation took 290 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:09:31] [INFO ] Redundant transitions in 2 ms returned []
Running 281 sub problems to find dead transitions.
[2026-05-25 09:09:31] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:09:31] [INFO ] Invariant cache hit.
[2026-05-25 09:09:31] [INFO ] State equation strengthened by 29 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 5 (OVERLAPS) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 142 constraints, problems are : Problem set: 0 solved, 281 unsolved in 5997 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/110 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/110 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 2 (OVERLAPS) 181/291 variables, 110/113 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/291 variables, 29/142 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 281/423 constraints. Problems are: Problem set: 0 solved, 281 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:43] [INFO ] Deduced a trap along path composed of 3 places in 34 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:43] [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 09:09:43] [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 09:09:43] [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 09:09:43] [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) 0/291 variables, 5/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 281 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 428 constraints, problems are : Problem set: 0 solved, 281 unsolved in 26949 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 281/281 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 33025ms problems are : Problem set: 0 solved, 281 unsolved
Search for dead transitions found 0 dead transitions in 33026ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33329 ms. Remains : 110/110 places, 283/283 transitions.
[2026-05-25 09:10:04] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 95=1, 132=1, 169=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 91=1, 144=1, 179=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 10) seen :[0, 2, 0, 5, 5, 0, 2, 3, 2, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 40000 steps (8 resets) in 903 ms. (44 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 119 ms. (333 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 130 ms. (305 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40003 steps (8 resets) in 79 ms. (500 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 121 ms. (327 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 118 ms. (336 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 110 ms. (360 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40002 steps (8 resets) in 111 ms. (357 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 126 ms. (314 steps per ms) remains 10/10 properties
[2026-05-25 09:10:05] [INFO ] Flatten gal took : 107 ms
BEST_FIRST walk for 40003 steps (8 resets) in 94 ms. (421 steps per ms) remains 10/10 properties
[2026-05-25 09:10:05] [INFO ] Flatten gal took : 19 ms
[2026-05-25 09:10:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2175242666070702807.gal : 13 ms
[2026-05-25 09:10:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12673559231997906074.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/ReachabilityCardinality2175242666070702807.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12673559231997906074.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 40003 steps (8 resets) in 163 ms. (243 steps per ms) remains 10/10 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 ...329
Loading property file /tmp/ReachabilityCardinality12673559231997906074.prop.
SDD proceeding with computation,10 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,10 properties remain. new max is 8
SDD size :31 after 959
SDD proceeding with computation,10 properties remain. new max is 16
SDD size :959 after 73902
Interrupted probabilistic random walk after 276317 steps, run timeout after 3001 ms. (steps per millisecond=92 ) properties seen :0 out of 10
Probabilistic random walk after 276317 steps, saw 175509 distinct states, run finished after 3008 ms. (steps per millisecond=91 ) properties seen :0
[2026-05-25 09:10:08] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:10:08] [INFO ] Invariant cache hit.
[2026-05-25 09:10:08] [INFO ] State equation strengthened by 29 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 33/43 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/43 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 116/159 variables, 22/32 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/159 variables, 1/33 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/159 variables, 3/36 constraints. Problems are: Problem set: 0 solved, 10 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/159 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (OVERLAPS) 9/168 variables, 1/37 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/168 variables, 1/38 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/168 variables, 0/38 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 10 (OVERLAPS) 109/277 variables, 67/105 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/277 variables, 26/131 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/277 variables, 0/131 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 13 (OVERLAPS) 6/283 variables, 1/132 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/283 variables, 0/132 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 15 (OVERLAPS) 8/291 variables, 10/142 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 17 (OVERLAPS) 0/291 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 142 constraints, problems are : Problem set: 0 solved, 10 unsolved in 399 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 33/43 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/43 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 116/159 variables, 22/32 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/159 variables, 1/33 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/159 variables, 3/36 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/159 variables, 7/43 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/159 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (OVERLAPS) 9/168 variables, 1/44 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/168 variables, 1/45 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/168 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 11 (OVERLAPS) 109/277 variables, 67/112 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/277 variables, 26/138 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/277 variables, 3/141 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:08] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/277 variables, 1/142 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/277 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 16 (OVERLAPS) 6/283 variables, 1/143 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/283 variables, 0/143 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 18 (OVERLAPS) 8/291 variables, 10/153 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:09] [INFO ] Deduced a trap along path composed of 3 places in 38 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:09] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:09] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:09] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
At refinement iteration 19 (INCLUDED_ONLY) 0/291 variables, 4/157 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/291 variables, 0/157 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 21 (OVERLAPS) 0/291 variables, 0/157 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 157 constraints, problems are : Problem set: 0 solved, 10 unsolved in 1235 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 29/29 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 1649ms problems are : Problem set: 0 solved, 10 unsolved
Fused 10 Parikh solutions to 8 different solutions.
Invariant property MIN0 does not hold.
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :73902 after 1.04286e+07
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :1.04286e+07 after 7.05745e+07
Parikh walk visited 0 properties in 30000 ms.
Support contains 9 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Applied a total of 6 rules in 9 ms. Remains 107 /110 variables (removed 3) and now considering 278/283 (removed 5) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 107/110 places, 278/283 transitions.
RANDOM walk for 40003 steps (8 resets) in 219 ms. (181 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 91 ms. (434 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (8 resets) in 80 ms. (493 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 56 ms. (701 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 56 ms. (701 steps per ms) remains 9/9 properties
Interrupted probabilistic random walk after 233933 steps, run timeout after 3001 ms. (steps per millisecond=77 ) properties seen :0 out of 9
Probabilistic random walk after 233933 steps, saw 145632 distinct states, run finished after 3001 ms. (steps per millisecond=77 ) properties seen :0
[2026-05-25 09:10:43] [INFO ] Flow matrix only has 176 transitions (discarded 102 similar events)
// Phase 1: matrix 176 rows 107 cols
[2026-05-25 09:10:43] [INFO ] Computed 3 invariants in 1 ms
[2026-05-25 09:10:43] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 1 (OVERLAPS) 29/38 variables, 9/9 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/38 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (OVERLAPS) 113/151 variables, 20/29 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 1/30 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 9 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/151 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (OVERLAPS) 9/160 variables, 1/33 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/160 variables, 1/34 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/160 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 10 (OVERLAPS) 109/269 variables, 67/101 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/269 variables, 24/125 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/269 variables, 0/125 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 13 (OVERLAPS) 6/275 variables, 1/126 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/275 variables, 0/126 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 15 (OVERLAPS) 8/283 variables, 10/136 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/283 variables, 0/136 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 17 (OVERLAPS) 0/283 variables, 0/136 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Real declared 283/283 variables, and 136 constraints, problems are : Problem set: 0 solved, 9 unsolved in 380 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 107/107 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 1 (OVERLAPS) 29/38 variables, 9/9 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/38 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (OVERLAPS) 113/151 variables, 20/29 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 1/30 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/151 variables, 7/39 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/151 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (OVERLAPS) 9/160 variables, 1/40 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/160 variables, 1/41 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/160 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 11 (OVERLAPS) 109/269 variables, 67/108 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/269 variables, 24/132 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/269 variables, 2/134 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:43] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/269 variables, 1/135 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:43] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/269 variables, 1/136 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/269 variables, 0/136 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 17 (OVERLAPS) 6/275 variables, 1/137 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/275 variables, 0/137 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 19 (OVERLAPS) 8/283 variables, 10/147 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:44] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:44] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/283 variables, 2/149 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/283 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 22 (OVERLAPS) 0/283 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Int declared 283/283 variables, and 149 constraints, problems are : Problem set: 0 solved, 9 unsolved in 1075 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 107/107 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 1462ms problems are : Problem set: 0 solved, 9 unsolved
Fused 9 Parikh solutions to 6 different solutions.
Parikh walk visited 0 properties in 1 ms.
Support contains 9 out of 107 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 107/107 places, 278/278 transitions.
Applied a total of 0 rules in 10 ms. Remains 107 /107 variables (removed 0) and now considering 278/278 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 107/107 places, 278/278 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 107/107 places, 278/278 transitions.
Applied a total of 0 rules in 5 ms. Remains 107 /107 variables (removed 0) and now considering 278/278 (removed 0) transitions.
[2026-05-25 09:10:44] [INFO ] Flow matrix only has 176 transitions (discarded 102 similar events)
[2026-05-25 09:10:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:10:44] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 09:10:44] [INFO ] Flow matrix only has 176 transitions (discarded 102 similar events)
[2026-05-25 09:10:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:10:44] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-25 09:10:44] [INFO ] Implicit Places using invariants and state equation in 222 ms returned []
Implicit Place search using SMT with State Equation took 292 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:10:44] [INFO ] Redundant transitions in 3 ms returned []
Running 276 sub problems to find dead transitions.
[2026-05-25 09:10:44] [INFO ] Flow matrix only has 176 transitions (discarded 102 similar events)
[2026-05-25 09:10:44] [INFO ] Invariant cache hit.
[2026-05-25 09:10:44] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/107 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/107 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 2 (OVERLAPS) 176/283 variables, 107/110 constraints. Problems are: Problem set: 0 solved, 276 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/283 variables, 26/136 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/283 variables, 0/136 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 5 (OVERLAPS) 0/283 variables, 0/136 constraints. Problems are: Problem set: 0 solved, 276 unsolved
No progress, stopping.
After SMT solving in domain Real declared 283/283 variables, and 136 constraints, problems are : Problem set: 0 solved, 276 unsolved in 6715 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 107/107 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 276/276 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 276 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/107 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/107 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 2 (OVERLAPS) 176/283 variables, 107/110 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/283 variables, 26/136 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/283 variables, 276/412 constraints. Problems are: Problem set: 0 solved, 276 unsolved
Detected timeout of ITS tools.
[2026-05-25 09:10:55] [INFO ] Flatten gal took : 19 ms
[2026-05-25 09:10:55] [INFO ] Applying decomposition
[2026-05-25 09:10:55] [INFO ] Flatten gal took : 16 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/graph6481233990976701447.txt' '-o' '/tmp/graph6481233990976701447.bin' '-w' '/tmp/graph6481233990976701447.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph6481233990976701447.bin' '-l' '-1' '-v' '-w' '/tmp/graph6481233990976701447.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:10:55] [INFO ] Decomposing Gal with order
[2026-05-25 09:10:55] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:10:55] [INFO ] Removed a total of 487 redundant transitions.
[2026-05-25 09:10:55] [INFO ] Flatten gal took : 58 ms
[2026-05-25 09:10:55] [INFO ] Fuse similar labels procedure discarded/fused a total of 183 labels/synchronizations in 16 ms.
[2026-05-25 09:10:55] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15892445902396795761.gal : 5 ms
[2026-05-25 09:10:55] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7433895201453003848.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/ReachabilityCardinality15892445902396795761.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7433895201453003848.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/ReachabilityCardinality7433895201453003848.prop.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:57] [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 09:10:57] [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 09:10:57] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:10:57] [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 09:10:57] [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 09:10:57] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/283 variables, 6/418 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/283 variables, 0/418 constraints. Problems are: Problem set: 0 solved, 276 unsolved
At refinement iteration 7 (OVERLAPS) 0/283 variables, 0/418 constraints. Problems are: Problem set: 0 solved, 276 unsolved
No progress, stopping.
After SMT solving in domain Int declared 283/283 variables, and 418 constraints, problems are : Problem set: 0 solved, 276 unsolved in 26010 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 107/107 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 276/276 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 32813ms problems are : Problem set: 0 solved, 276 unsolved
Search for dead transitions found 0 dead transitions in 32815ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33127 ms. Remains : 107/107 places, 278/278 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 102 transitions
Reduce isomorphic transitions removed 102 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 5 transitions
Trivial Post-agglo rules discarded 5 transitions
Performed 5 trivial Post agglomeration. Transition count delta: 5
Iterating post reduction 0 with 107 rules applied. Total rules applied 107 place count 107 transition count 171
Reduce places removed 5 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 6 rules applied. Total rules applied 113 place count 102 transition count 170
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 114 place count 101 transition count 170
Performed 21 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 21 Pre rules applied. Total rules applied 114 place count 101 transition count 149
Deduced a syphon composed of 21 places in 0 ms
Reduce places removed 21 places and 0 transitions.
Iterating global reduction 3 with 42 rules applied. Total rules applied 156 place count 80 transition count 149
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 3 with 34 rules applied. Total rules applied 190 place count 63 transition count 132
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 197 place count 56 transition count 118
Iterating global reduction 3 with 7 rules applied. Total rules applied 204 place count 56 transition count 118
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 211 place count 49 transition count 104
Iterating global reduction 3 with 7 rules applied. Total rules applied 218 place count 49 transition count 104
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 225 place count 42 transition count 90
Iterating global reduction 3 with 7 rules applied. Total rules applied 232 place count 42 transition count 90
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 3 with 7 rules applied. Total rules applied 239 place count 42 transition count 83
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 1 Pre rules applied. Total rules applied 239 place count 42 transition count 82
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 241 place count 41 transition count 82
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 4 with 4 rules applied. Total rules applied 245 place count 39 transition count 82
Drop transitions (Redundant composition of simpler transitions.) removed 5 transitions
Redundant transition composition rules discarded 5 transitions
Iterating global reduction 4 with 5 rules applied. Total rules applied 250 place count 39 transition count 77
Free-agglomeration rule applied 2 times.
Iterating global reduction 4 with 2 rules applied. Total rules applied 252 place count 39 transition count 75
Reduce places removed 2 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 4 with 3 rules applied. Total rules applied 255 place count 37 transition count 74
Drop transitions (Redundant composition of simpler transitions.) removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 5 with 2 rules applied. Total rules applied 257 place count 37 transition count 72
Partial Free-agglomeration rule applied 2 times.
Drop transitions (Partial Free agglomeration) removed 2 transitions
Iterating global reduction 5 with 2 rules applied. Total rules applied 259 place count 37 transition count 72
Applied a total of 259 rules in 32 ms. Remains 37 /107 variables (removed 70) and now considering 72/278 (removed 206) transitions.
Running SMT prover for 9 properties.
// Phase 1: matrix 72 rows 37 cols
[2026-05-25 09:11:17] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:11:17] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:17] [INFO ] After 34ms SMT Verify possible using state equation in real domain returned unsat :0 sat :3 real:6
[2026-05-25 09:11:17] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:11:17] [INFO ] After 8ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:9
[2026-05-25 09:11:17] [INFO ] After 85ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:9
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:11:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:17] [INFO ] After 32ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :9
[2026-05-25 09:11:17] [INFO ] After 19ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :9
TRAPS : Iteration 0
[2026-05-25 09:11:17] [INFO ] After 49ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :9
[2026-05-25 09:11:17] [INFO ] After 137ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :9
[2026-05-25 09:11:17] [INFO ] Flatten gal took : 5 ms
[2026-05-25 09:11:17] [INFO ] Flatten gal took : 4 ms
[2026-05-25 09:11:17] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7029243828866307192.gal : 1 ms
[2026-05-25 09:11:17] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2383924039192795712.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/ReachabilityCardinality7029243828866307192.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2383924039192795712.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/ReachabilityCardinality2383924039192795712.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :5 after 15
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :15 after 848
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :848 after 13500
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :13500 after 260360
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :260360 after 1.05249e+07
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :1.05249e+07 after 4.60182e+08
SDD proceeding with computation,9 properties remain. new max is 512
SDD size :4.60182e+08 after 2.57836e+10
SDD proceeding with computation,9 properties remain. new max is 1024
SDD size :2.57836e+10 after 1.51495e+12
SDD proceeding with computation,9 properties remain. new max is 2048
SDD size :1.51495e+12 after 9.20576e+13
Detected timeout of ITS tools.
[2026-05-25 09:11:32] [INFO ] Flatten gal took : 16 ms
[2026-05-25 09:11:32] [INFO ] Applying decomposition
[2026-05-25 09:11:32] [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/graph848607125383981721.txt' '-o' '/tmp/graph848607125383981721.bin' '-w' '/tmp/graph848607125383981721.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph848607125383981721.bin' '-l' '-1' '-v' '-w' '/tmp/graph848607125383981721.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:11:32] [INFO ] Decomposing Gal with order
[2026-05-25 09:11:32] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:11:33] [INFO ] Removed a total of 82 redundant transitions.
[2026-05-25 09:11:33] [INFO ] Flatten gal took : 13 ms
[2026-05-25 09:11:33] [INFO ] Fuse similar labels procedure discarded/fused a total of 6 labels/synchronizations in 1 ms.
[2026-05-25 09:11:33] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8730132050621181836.gal : 1 ms
[2026-05-25 09:11:33] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13254731507487608994.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/ReachabilityCardinality8730132050621181836.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13254731507487608994.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/ReachabilityCardinality13254731507487608994.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :5 after 30
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :30 after 1375
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :1375 after 119045
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :119045 after 1.9568e+06
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :1.9568e+06 after 2.12176e+07
Invariant property MIN8 does not hold.
SDD proceeding with computation,8 properties remain. new max is 128
SDD size :2.12176e+07 after 1.95481e+08
Detected timeout of ITS tools.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30424 ms.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[5, 772, 793, 1387, 2426, 529, 1246, 812, 183, 2979] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Starting property specific reduction for FunctionPointer-PT-b004-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 09:11:48] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:11:48] [INFO ] Computed 3 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 7 ms. (1250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 09:11:48] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:11:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:11:48] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:48] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:11:48] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:11:48] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:11:48] [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 09:11:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:48] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:11:48] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:11:48] [INFO ] Deduced a trap composed of 17 places in 84 ms of which 10 ms to minimize.
[2026-05-25 09:11:48] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 96 ms
[2026-05-25 09:11:48] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:11:48] [INFO ] Added : 5 causal constraints over 2 iterations in 34 ms. Result :sat
Minimization took 29 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:[3] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Discarding 7 places :
Symmetric choice reduction at 0 with 7 rule applications. Total rules 7 place count 103 transition count 265
Iterating global reduction 0 with 7 rules applied. Total rules applied 14 place count 103 transition count 265
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 20 place count 103 transition count 259
Discarding 5 places :
Symmetric choice reduction at 1 with 5 rule applications. Total rules 25 place count 98 transition count 243
Iterating global reduction 1 with 5 rules applied. Total rules applied 30 place count 98 transition count 243
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 34 place count 98 transition count 239
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 37 place count 95 transition count 233
Iterating global reduction 2 with 3 rules applied. Total rules applied 40 place count 95 transition count 233
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 43 place count 92 transition count 223
Iterating global reduction 2 with 3 rules applied. Total rules applied 46 place count 92 transition count 223
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 49 place count 89 transition count 217
Iterating global reduction 2 with 3 rules applied. Total rules applied 52 place count 89 transition count 217
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 55 place count 86 transition count 211
Iterating global reduction 2 with 3 rules applied. Total rules applied 58 place count 86 transition count 211
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 61 place count 83 transition count 205
Iterating global reduction 2 with 3 rules applied. Total rules applied 64 place count 83 transition count 205
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 67 place count 80 transition count 199
Iterating global reduction 2 with 3 rules applied. Total rules applied 70 place count 80 transition count 199
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 72 place count 78 transition count 195
Iterating global reduction 2 with 2 rules applied. Total rules applied 74 place count 78 transition count 195
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 76 place count 76 transition count 191
Iterating global reduction 2 with 2 rules applied. Total rules applied 78 place count 76 transition count 191
Applied a total of 78 rules in 27 ms. Remains 76 /110 variables (removed 34) and now considering 191/283 (removed 92) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27 ms. Remains : 76/110 places, 191/283 transitions.
[2026-05-25 09:11:48] [INFO ] Flow matrix only has 117 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 {31=1, 56=1, 102=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 56=1, 86=1, 112=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 49 ms. (steps per millisecond=204 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 09:11:48] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
// Phase 1: matrix 117 rows 76 cols
[2026-05-25 09:11:48] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000002 steps (2 resets) in 961 ms. (1039 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 444 ms. (2247 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 09:11:49] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:11:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:49] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:11:49] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:11:49] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:11:49] [INFO ] [Real]Added 18 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:11:49] [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 09:11:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:50] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:11:50] [INFO ] [Nat]Added 18 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:11:50] [INFO ] Deduced a trap composed of 13 places in 51 ms of which 3 ms to minimize.
[2026-05-25 09:11:50] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 59 ms
[2026-05-25 09:11:50] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 6 ms.
[2026-05-25 09:11:50] [INFO ] Added : 3 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 6 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 76/76 places, 191/191 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 4 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 09:11:50] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:11:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:11:50] [INFO ] Implicit Places using invariants in 56 ms returned []
[2026-05-25 09:11:50] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:11:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:11:50] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:11:50] [INFO ] Implicit Places using invariants and state equation in 180 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 09:11:50] [INFO ] Redundant transitions in 2 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 09:11:50] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:11:50] [INFO ] Invariant cache hit.
[2026-05-25 09:11:50] [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, 3/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 2 (OVERLAPS) 117/193 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 189 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 18/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 189 unsolved in 4850 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 189/189 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 189 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, 189 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 2 (OVERLAPS) 117/193 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 18/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 189/286 constraints. Problems are: Problem set: 0 solved, 189 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:11:59] [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 09:11:59] [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 09:11:59] [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 09:11:59] [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 09:11:59] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:11:59] [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) 0/193 variables, 6/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:07] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:07] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/193 variables, 2/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/193 variables, 0/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 9 (OVERLAPS) 0/193 variables, 0/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 294 constraints, problems are : Problem set: 0 solved, 189 unsolved in 23721 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 189/189 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 8/8 constraints]
After SMT, in 28620ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 28622ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28879 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 09:12:19] [INFO ] Flow matrix only has 117 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 {31=1, 56=1, 102=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 56=1, 86=1, 112=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 :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 09:12:19] [INFO ] Flatten gal took : 19 ms
[2026-05-25 09:12:19] [INFO ] Flatten gal took : 12 ms
RANDOM walk for 33396 steps (7 resets) in 115 ms. (287 steps per ms) remains 0/1 properties
[2026-05-25 09:12:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14443475711462979609.gal : 2 ms
[2026-05-25 09:12:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10527279883371705410.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/ReachabilityCardinality14443475711462979609.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10527279883371705410.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/ReachabilityCardinality10527279883371705410.prop.
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:[3] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b004-UpperBounds-01 in 31158 ms.
Starting property specific reduction for FunctionPointer-PT-b004-UpperBounds-03
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 09:12:19] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:12:19] [INFO ] Computed 3 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 17 ms. (555 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:[7] Max Struct:[+inf]
[2026-05-25 09:12:19] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:12:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:12:19] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:19] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:12:19] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:12:19] [INFO ] [Real]Added 29 Read/Feed constraints in 17 ms returned sat
[2026-05-25 09:12:19] [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 09:12:19] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:12:19] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:12:19] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:19] [INFO ] Deduced a trap composed of 17 places in 65 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:19] [INFO ] Deduced a trap composed of 20 places in 59 ms of which 6 ms to minimize.
[2026-05-25 09:12:19] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 137 ms
[2026-05-25 09:12:19] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 7 ms.
[2026-05-25 09:12:19] [INFO ] Added : 17 causal constraints over 5 iterations in 64 ms. Result :sat
Minimization took 31 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 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 12 place count 101 transition count 264
Iterating global reduction 1 with 6 rules applied. Total rules applied 18 place count 101 transition count 264
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 24 place count 101 transition count 258
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 27 place count 98 transition count 246
Iterating global reduction 2 with 3 rules applied. Total rules applied 30 place count 98 transition count 246
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 33 place count 95 transition count 240
Iterating global reduction 2 with 3 rules applied. Total rules applied 36 place count 95 transition count 240
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 39 place count 92 transition count 230
Iterating global reduction 2 with 3 rules applied. Total rules applied 42 place count 92 transition count 230
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 45 place count 89 transition count 224
Iterating global reduction 2 with 3 rules applied. Total rules applied 48 place count 89 transition count 224
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 51 place count 86 transition count 218
Iterating global reduction 2 with 3 rules applied. Total rules applied 54 place count 86 transition count 218
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 57 place count 83 transition count 212
Iterating global reduction 2 with 3 rules applied. Total rules applied 60 place count 83 transition count 212
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 63 place count 80 transition count 206
Iterating global reduction 2 with 3 rules applied. Total rules applied 66 place count 80 transition count 206
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 68 place count 78 transition count 202
Iterating global reduction 2 with 2 rules applied. Total rules applied 70 place count 78 transition count 202
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 72 place count 76 transition count 198
Iterating global reduction 2 with 2 rules applied. Total rules applied 74 place count 76 transition count 198
Applied a total of 74 rules in 27 ms. Remains 76 /110 variables (removed 34) and now considering 198/283 (removed 85) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27 ms. Remains : 76/110 places, 198/283 transitions.
[2026-05-25 09:12:19] [INFO ] Flow matrix only has 118 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 {26=1, 57=1, 86=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 58=1, 103=1, 117=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 :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 09:12:19] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
// Phase 1: matrix 118 rows 76 cols
[2026-05-25 09:12:19] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 963 ms. (1037 steps per ms)
FORMULA FunctionPointer-PT-b004-UpperBounds-03 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
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 09:12:20] [INFO ] Flatten gal took : 15 ms
[2026-05-25 09:12:20] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:12:20] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2543732049569651017.gal : 1 ms
[2026-05-25 09:12:20] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11129021148132826827.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/ReachabilityCardinality2543732049569651017.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11129021148132826827.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
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
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-b004-UpperBounds-03 in 1582 ms.
Starting property specific reduction for FunctionPointer-PT-b004-UpperBounds-05
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 09:12:20] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:12:20] [INFO ] Computed 3 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 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 09:12:20] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:12:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:12:20] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:20] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:12:20] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:12:20] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:12:20] [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 09:12:20] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:12:20] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:12:20] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:12:20] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 12 ms.
[2026-05-25 09:12:21] [INFO ] Added : 20 causal constraints over 6 iterations in 86 ms. Result :sat
Minimization took 32 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 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 100 transition count 260
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 100 transition count 260
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 26 place count 100 transition count 254
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 31 place count 95 transition count 238
Iterating global reduction 2 with 5 rules applied. Total rules applied 36 place count 95 transition count 238
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 40 place count 95 transition count 234
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 42 place count 93 transition count 230
Iterating global reduction 3 with 2 rules applied. Total rules applied 44 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 46 place count 91 transition count 224
Iterating global reduction 3 with 2 rules applied. Total rules applied 48 place count 91 transition count 224
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 50 place count 89 transition count 220
Iterating global reduction 3 with 2 rules applied. Total rules applied 52 place count 89 transition count 220
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 54 place count 87 transition count 216
Iterating global reduction 3 with 2 rules applied. Total rules applied 56 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 58 place count 85 transition count 212
Iterating global reduction 3 with 2 rules applied. Total rules applied 60 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 62 place count 83 transition count 208
Iterating global reduction 3 with 2 rules applied. Total rules applied 64 place count 83 transition count 208
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 65 place count 82 transition count 206
Iterating global reduction 3 with 1 rules applied. Total rules applied 66 place count 82 transition count 206
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 67 place count 81 transition count 204
Iterating global reduction 3 with 1 rules applied. Total rules applied 68 place count 81 transition count 204
Applied a total of 68 rules in 14 ms. Remains 81 /110 variables (removed 29) and now considering 204/283 (removed 79) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 81/110 places, 204/283 transitions.
[2026-05-25 09:12:21] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {31=1, 63=1, 109=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 63=1, 109=1, 123=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 :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 09:12:21] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
// Phase 1: matrix 125 rows 81 cols
[2026-05-25 09:12:21] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[7] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 985 ms. (1014 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 447 ms. (2232 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[632] Max Struct:[+inf]
[2026-05-25 09:12:22] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:22] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:22] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:12:22] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:12:22] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:12:22] [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 09:12:22] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:22] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:12:22] [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 09:12:22] [INFO ] Deduced a trap composed of 14 places in 56 ms of which 6 ms to minimize.
[2026-05-25 09:12:22] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 65 ms
[2026-05-25 09:12:22] [INFO ] Computed and/alt/rep : 59/193/53 causal constraints (skipped 70 transitions) in 5 ms.
[2026-05-25 09:12:22] [INFO ] Added : 15 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[632] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[632] Max Struct:[+inf]
Support contains 1 out of 81 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 81/81 places, 204/204 transitions.
Applied a total of 0 rules in 3 ms. Remains 81 /81 variables (removed 0) and now considering 204/204 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 81/81 places, 204/204 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 81/81 places, 204/204 transitions.
Applied a total of 0 rules in 2 ms. Remains 81 /81 variables (removed 0) and now considering 204/204 (removed 0) transitions.
[2026-05-25 09:12:23] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:12:24] [INFO ] Implicit Places using invariants in 59 ms returned []
[2026-05-25 09:12:24] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:12:24] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:12:24] [INFO ] Implicit Places using invariants and state equation in 157 ms returned []
Implicit Place search using SMT with State Equation took 231 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:12:24] [INFO ] Redundant transitions in 3 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 09:12:24] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:24] [INFO ] Invariant cache hit.
[2026-05-25 09:12:24] [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) 0/81 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/81 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 2 (OVERLAPS) 125/206 variables, 81/84 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/206 variables, 18/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:26] [INFO ] Deduced a trap composed of 14 places in 56 ms of which 4 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (OVERLAPS) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 103 constraints, problems are : Problem set: 0 solved, 202 unsolved in 10296 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 202/202 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/81 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/81 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/81 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 3 (OVERLAPS) 125/206 variables, 81/85 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 202/305 constraints. Problems are: Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:38] [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 09:12:38] [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 09:12:38] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:38] [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 09:12:38] [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 09:12:39] [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) 0/206 variables, 6/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 8 (OVERLAPS) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 311 constraints, problems are : Problem set: 0 solved, 202 unsolved in 16567 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 202/202 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 26912ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 26913ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27156 ms. Remains : 81/81 places, 204/204 transitions.
[2026-05-25 09:12:51] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {31=1, 63=1, 109=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 63=1, 109=1, 123=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 :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[632] Max Struct:[+inf]
[2026-05-25 09:12:51] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:51] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[632] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 920 ms. (1085 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 435 ms. (2293 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[632] Max Struct:[+inf]
[2026-05-25 09:12:52] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:52] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:12:52] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:12:52] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:12:52] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:12:52] [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 09:12:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:52] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 09:12:52] [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 09:12:52] [INFO ] Deduced a trap composed of 14 places in 71 ms of which 6 ms to minimize.
[2026-05-25 09:12:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 84 ms
[2026-05-25 09:12:52] [INFO ] Computed and/alt/rep : 59/193/53 causal constraints (skipped 70 transitions) in 5 ms.
[2026-05-25 09:12:52] [INFO ] Added : 15 causal constraints over 4 iterations in 43 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[632] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[632] Max Struct:[+inf]
Support contains 1 out of 81 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 81/81 places, 204/204 transitions.
Applied a total of 0 rules in 3 ms. Remains 81 /81 variables (removed 0) and now considering 204/204 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 81/81 places, 204/204 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 81/81 places, 204/204 transitions.
Applied a total of 0 rules in 2 ms. Remains 81 /81 variables (removed 0) and now considering 204/204 (removed 0) transitions.
[2026-05-25 09:12:54] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:12:54] [INFO ] Implicit Places using invariants in 63 ms returned []
[2026-05-25 09:12:54] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:12:54] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:12:54] [INFO ] Implicit Places using invariants and state equation in 179 ms returned []
Implicit Place search using SMT with State Equation took 247 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:12:54] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 09:12:54] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:12:54] [INFO ] Invariant cache hit.
[2026-05-25 09:12:54] [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) 0/81 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/81 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 2 (OVERLAPS) 125/206 variables, 81/84 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/206 variables, 18/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:57] [INFO ] Deduced a trap composed of 14 places in 55 ms of which 4 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (OVERLAPS) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 103 constraints, problems are : Problem set: 0 solved, 202 unsolved in 10201 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 202/202 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/81 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/81 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/81 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 3 (OVERLAPS) 125/206 variables, 81/85 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 202/305 constraints. Problems are: Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:13:08] [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 09:13:08] [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 09:13:08] [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 09:13:08] [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 09:13:08] [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 09:13:09] [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) 0/206 variables, 6/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 8 (OVERLAPS) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 311 constraints, problems are : Problem set: 0 solved, 202 unsolved in 16633 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 202/202 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 26886ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 26887ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27147 ms. Remains : 81/81 places, 204/204 transitions.
[2026-05-25 09:13:21] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {31=1, 63=1, 109=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 63=1, 109=1, 123=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 :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[632] Max Struct:[+inf]
[2026-05-25 09:13:21] [INFO ] Flatten gal took : 15 ms
[2026-05-25 09:13:21] [INFO ] Flatten gal took : 8 ms
[2026-05-25 09:13:21] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13425377977713689889.gal : 1 ms
[2026-05-25 09:13:21] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10928459402917006347.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/ReachabilityCardinality13425377977713689889.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10928459402917006347.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40007 steps (8 resets) in 93 ms. (425 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 ...330
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality10928459402917006347.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 917
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :917 after 36989
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :36989 after 95444
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :95444 after 125887
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :125887 after 192273
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :192273 after 308894
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :308894 after 535249
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :535249 after 986234
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :986234 after 1.90418e+06
Interrupted probabilistic random walk after 2054543 steps, run timeout after 3001 ms. (steps per millisecond=684 ) properties seen :0 out of 1
Probabilistic random walk after 2054543 steps, saw 1322916 distinct states, run finished after 3001 ms. (steps per millisecond=684 ) properties seen :0
[2026-05-25 09:13:24] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:13:24] [INFO ] Invariant cache hit.
[2026-05-25 09:13:24] [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) 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) 71/82 variables, 6/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/82 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/92 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 4/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 97/189 variables, 57/72 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/189 variables, 18/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 10/205 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/205 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 1/206 variables, 1/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 82 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 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) 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) 71/82 variables, 6/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/82 variables, 1/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/82 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 10/92 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 4/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/92 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 97/189 variables, 57/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 18/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 10/205 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/205 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 1/206 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 92 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 179ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 913 ms.
Support contains 1 out of 81 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 81/81 places, 204/204 transitions.
Applied a total of 0 rules in 3 ms. Remains 81 /81 variables (removed 0) and now considering 204/204 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 81/81 places, 204/204 transitions.
RANDOM walk for 40000 steps (8 resets) in 87 ms. (454 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 25 ms. (1538 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.90418e+06 after 3.73164e+06
Interrupted probabilistic random walk after 1986118 steps, run timeout after 3001 ms. (steps per millisecond=661 ) properties seen :0 out of 1
Probabilistic random walk after 1986118 steps, saw 1275944 distinct states, run finished after 3001 ms. (steps per millisecond=661 ) properties seen :0
[2026-05-25 09:13:28] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:13:28] [INFO ] Invariant cache hit.
[2026-05-25 09:13:28] [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) 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) 71/82 variables, 6/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/82 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/92 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 4/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 97/189 variables, 57/72 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/189 variables, 18/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 10/205 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/205 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 1/206 variables, 1/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 79 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 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) 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) 71/82 variables, 6/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/82 variables, 1/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/82 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 10/92 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 4/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/92 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 97/189 variables, 57/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 18/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 10/205 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/205 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 1/206 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 104 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 188ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 902 ms.
Support contains 1 out of 81 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 81/81 places, 204/204 transitions.
Applied a total of 0 rules in 3 ms. Remains 81 /81 variables (removed 0) and now considering 204/204 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 81/81 places, 204/204 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 81/81 places, 204/204 transitions.
Applied a total of 0 rules in 2 ms. Remains 81 /81 variables (removed 0) and now considering 204/204 (removed 0) transitions.
[2026-05-25 09:13:29] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:13:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:13:29] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-05-25 09:13:29] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:13:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:13:29] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:13:29] [INFO ] Implicit Places using invariants and state equation in 159 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 09:13:29] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 09:13:29] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 09:13:29] [INFO ] Invariant cache hit.
[2026-05-25 09:13:29] [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) 0/81 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/81 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 2 (OVERLAPS) 125/206 variables, 81/84 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/206 variables, 18/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:13:32] [INFO ] Deduced a trap composed of 14 places in 47 ms of which 4 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (OVERLAPS) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 103 constraints, problems are : Problem set: 0 solved, 202 unsolved in 10140 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 202/202 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/81 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/81 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/81 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 3 (OVERLAPS) 125/206 variables, 81/85 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 202 unsolved
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :3.73164e+06 after 7.39537e+06
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 202/305 constraints. Problems are: Problem set: 0 solved, 202 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:13:43] [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 09:13:43] [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 09:13:43] [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 09:13:43] [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 09:13:44] [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 09:13:44] [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) 0/206 variables, 6/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 8 (OVERLAPS) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 311 constraints, problems are : Problem set: 0 solved, 202 unsolved in 16586 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 81/81 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 202/202 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 26773ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 26775ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27009 ms. Remains : 81/81 places, 204/204 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 79 transitions
Reduce isomorphic transitions removed 79 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 86 rules applied. Total rules applied 86 place count 81 transition count 118
Reduce places removed 7 places and 0 transitions.
Iterating post reduction 1 with 7 rules applied. Total rules applied 93 place count 74 transition count 118
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 93 place count 74 transition count 102
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 125 place count 58 transition count 102
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 155 place count 43 transition count 87
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 162 place count 36 transition count 73
Iterating global reduction 2 with 7 rules applied. Total rules applied 169 place count 36 transition count 73
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 176 place count 29 transition count 59
Iterating global reduction 2 with 7 rules applied. Total rules applied 183 place count 29 transition count 59
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 190 place count 22 transition count 45
Iterating global reduction 2 with 7 rules applied. Total rules applied 197 place count 22 transition count 45
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 204 place count 22 transition count 38
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 204 place count 22 transition count 37
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 206 place count 21 transition count 37
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 208 place count 20 transition count 37
Applied a total of 208 rules in 25 ms. Remains 20 /81 variables (removed 61) and now considering 37/204 (removed 167) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 37 rows 20 cols
[2026-05-25 09:13:56] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:13:56] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:56] [INFO ] After 9ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 09:13:56] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:13:56] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 09:13:56] [INFO ] After 34ms 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 09:13:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:56] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 09:13:56] [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 09:13:56] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:13:56] [INFO ] After 31ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:13:56] [INFO ] Flatten gal took : 4 ms
[2026-05-25 09:13:56] [INFO ] Flatten gal took : 2 ms
[2026-05-25 09:13:56] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11025846398662245972.gal : 1 ms
[2026-05-25 09:13:56] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10108404061961988784.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/ReachabilityCardinality11025846398662245972.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10108404061961988784.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/ReachabilityCardinality10108404061961988784.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 60
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :60 after 900
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :900 after 4560
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :4560 after 19900
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :19900 after 81980
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :81980 after 330300
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :330300 after 1.32104e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.32104e+06 after 5.2737e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.2737e+06 after 2.10536e+07
Detected timeout of ITS tools.
[2026-05-25 09:14:11] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:14:11] [INFO ] Applying decomposition
[2026-05-25 09:14:11] [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/graph14928375474249065172.txt' '-o' '/tmp/graph14928375474249065172.bin' '-w' '/tmp/graph14928375474249065172.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph14928375474249065172.bin' '-l' '-1' '-v' '-w' '/tmp/graph14928375474249065172.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:14:11] [INFO ] Decomposing Gal with order
[2026-05-25 09:14:11] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:14:11] [INFO ] Removed a total of 346 redundant transitions.
[2026-05-25 09:14:11] [INFO ] Flatten gal took : 18 ms
[2026-05-25 09:14:11] [INFO ] Fuse similar labels procedure discarded/fused a total of 114 labels/synchronizations in 7 ms.
[2026-05-25 09:14:11] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15961189501728676095.gal : 3 ms
[2026-05-25 09:14:11] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14966928226646558265.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/ReachabilityCardinality15961189501728676095.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14966928226646558265.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/ReachabilityCardinality14966928226646558265.prop.
Detected timeout of ITS tools.
[2026-05-25 09:14:11] [INFO ] Flatten gal took : 4 ms
[2026-05-25 09:14:11] [INFO ] Applying decomposition
[2026-05-25 09:14:11] [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/graph16793087776111483447.txt' '-o' '/tmp/graph16793087776111483447.bin' '-w' '/tmp/graph16793087776111483447.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph16793087776111483447.bin' '-l' '-1' '-v' '-w' '/tmp/graph16793087776111483447.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:14:11] [INFO ] Decomposing Gal with order
[2026-05-25 09:14:11] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:14:11] [INFO ] Removed a total of 30 redundant transitions.
[2026-05-25 09:14:11] [INFO ] Flatten gal took : 3 ms
[2026-05-25 09:14:11] [INFO ] Fuse similar labels procedure discarded/fused a total of 8 labels/synchronizations in 0 ms.
[2026-05-25 09:14:11] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15426463761819834986.gal : 0 ms
[2026-05-25 09:14:11] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13030179000244334495.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/ReachabilityCardinality15426463761819834986.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13030179000244334495.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/ReachabilityCardinality13030179000244334495.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 30
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :30 after 516
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :516 after 1276
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1276 after 3516
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3516 after 11076
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :11076 after 39156
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :39156 after 141276
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :141276 after 547356
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30190 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:[632] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b004-UpperBounds-05 in 126003 ms.
Starting property specific reduction for FunctionPointer-PT-b004-UpperBounds-07
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 09:14:26] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:14:26] [INFO ] Computed 3 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 21 ms. (454 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:[8] Max Struct:[+inf]
[2026-05-25 09:14:26] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:14:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:14:26] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:14:26] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:14:26] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:14:26] [INFO ] [Real]Added 29 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:14:26] [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 09:14:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:14:26] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:14:26] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:27] [INFO ] Deduced a trap composed of 17 places in 69 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:27] [INFO ] Deduced a trap composed of 20 places in 62 ms of which 7 ms to minimize.
[2026-05-25 09:14:27] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 155 ms
[2026-05-25 09:14:27] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:14:27] [INFO ] Added : 18 causal constraints over 4 iterations in 72 ms. Result :sat
Minimization took 33 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[8] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[8] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 12 place count 101 transition count 262
Iterating global reduction 1 with 6 rules applied. Total rules applied 18 place count 101 transition count 262
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 22 place count 101 transition count 258
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 27 place count 96 transition count 242
Iterating global reduction 2 with 5 rules applied. Total rules applied 32 place count 96 transition count 242
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 36 place count 96 transition count 238
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 39 place count 93 transition count 232
Iterating global reduction 3 with 3 rules applied. Total rules applied 42 place count 93 transition count 232
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 45 place count 90 transition count 222
Iterating global reduction 3 with 3 rules applied. Total rules applied 48 place count 90 transition count 222
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 51 place count 87 transition count 216
Iterating global reduction 3 with 3 rules applied. Total rules applied 54 place count 87 transition count 216
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 57 place count 84 transition count 210
Iterating global reduction 3 with 3 rules applied. Total rules applied 60 place count 84 transition count 210
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 63 place count 81 transition count 204
Iterating global reduction 3 with 3 rules applied. Total rules applied 66 place count 81 transition count 204
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 69 place count 78 transition count 198
Iterating global reduction 3 with 3 rules applied. Total rules applied 72 place count 78 transition count 198
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 74 place count 76 transition count 194
Iterating global reduction 3 with 2 rules applied. Total rules applied 76 place count 76 transition count 194
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 78 place count 74 transition count 190
Iterating global reduction 3 with 2 rules applied. Total rules applied 80 place count 74 transition count 190
Applied a total of 80 rules in 33 ms. Remains 74 /110 variables (removed 36) and now considering 190/283 (removed 93) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33 ms. Remains : 74/110 places, 190/283 transitions.
[2026-05-25 09:14:27] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 51=1, 80=1, 111=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 56=1, 101=1, 113=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 :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 09:14:27] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
// Phase 1: matrix 114 rows 74 cols
[2026-05-25 09:14:27] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 977 ms. (1022 steps per ms)
FORMULA FunctionPointer-PT-b004-UpperBounds-07 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
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 09:14:28] [INFO ] Flatten gal took : 16 ms
[2026-05-25 09:14:28] [INFO ] Flatten gal took : 8 ms
[2026-05-25 09:14:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11261218706896435774.gal : 1 ms
[2026-05-25 09:14:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8822823501250306219.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/ReachabilityCardinality11261218706896435774.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8822823501250306219.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
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
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-b004-UpperBounds-07 in 1641 ms.
Starting property specific reduction for FunctionPointer-PT-b004-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:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 09:14:28] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:14:28] [INFO ] Computed 3 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 16 ms. (588 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[22] Max Struct:[+inf]
[2026-05-25 09:14:28] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:14:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:14:28] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:14:28] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:14:28] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:14:28] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:14:28] [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 09:14:28] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:14:28] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:14:28] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:28] [INFO ] Deduced a trap composed of 17 places in 72 ms of which 6 ms to minimize.
[2026-05-25 09:14:28] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 90 ms
[2026-05-25 09:14:28] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 12 ms.
[2026-05-25 09:14:28] [INFO ] Added : 16 causal constraints over 5 iterations in 67 ms. Result :sat
Minimization took 31 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[22] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[22] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 12 place count 101 transition count 262
Iterating global reduction 1 with 6 rules applied. Total rules applied 18 place count 101 transition count 262
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 24 place count 101 transition count 256
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 29 place count 96 transition count 240
Iterating global reduction 2 with 5 rules applied. Total rules applied 34 place count 96 transition count 240
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 38 place count 96 transition count 236
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 41 place count 93 transition count 230
Iterating global reduction 3 with 3 rules applied. Total rules applied 44 place count 93 transition count 230
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 47 place count 90 transition count 220
Iterating global reduction 3 with 3 rules applied. Total rules applied 50 place count 90 transition count 220
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 53 place count 87 transition count 214
Iterating global reduction 3 with 3 rules applied. Total rules applied 56 place count 87 transition count 214
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 59 place count 84 transition count 208
Iterating global reduction 3 with 3 rules applied. Total rules applied 62 place count 84 transition count 208
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 65 place count 81 transition count 202
Iterating global reduction 3 with 3 rules applied. Total rules applied 68 place count 81 transition count 202
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 71 place count 78 transition count 196
Iterating global reduction 3 with 3 rules applied. Total rules applied 74 place count 78 transition count 196
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 76 place count 76 transition count 192
Iterating global reduction 3 with 2 rules applied. Total rules applied 78 place count 76 transition count 192
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 80 place count 74 transition count 188
Iterating global reduction 3 with 2 rules applied. Total rules applied 82 place count 74 transition count 188
Applied a total of 82 rules in 15 ms. Remains 74 /110 variables (removed 36) and now considering 188/283 (removed 95) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 74/110 places, 188/283 transitions.
[2026-05-25 09:14:28] [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 22 ms. (steps per millisecond=454 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[22] Max Struct:[+inf]
[2026-05-25 09:14:28] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
// Phase 1: matrix 115 rows 74 cols
[2026-05-25 09:14:28] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[22] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 966 ms. (1034 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 429 ms. (2325 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5737] Max Struct:[+inf]
[2026-05-25 09:14:30] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:14:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:14:30] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:14:30] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:14:30] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:14:30] [INFO ] [Real]Added 17 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:14:30] [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 09:14:30] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:14:30] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:14:30] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:14:30] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 6 ms.
[2026-05-25 09:14:30] [INFO ] Added : 7 causal constraints over 4 iterations in 34 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5737] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5757] 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 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 09:14:34] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:14:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:14:34] [INFO ] Implicit Places using invariants in 62 ms returned []
[2026-05-25 09:14:34] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:14:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:14:34] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:14:34] [INFO ] Implicit Places using invariants and state equation in 170 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 09:14:34] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:14:34] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:14:34] [INFO ] Invariant cache hit.
[2026-05-25 09:14:34] [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
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 6046 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 09:14:44] [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 09:14:44] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:44] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:44] [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 09:14:44] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 15190 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: 5/5 constraints]
After SMT, in 21286ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21287ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21531 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:14:55] [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 22 ms. (steps per millisecond=454 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[5757] Max Struct:[+inf]
[2026-05-25 09:14:55] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:14:55] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5757] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 945 ms. (1057 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 456 ms. (2188 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5757] Max Struct:[+inf]
[2026-05-25 09:14:57] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:14:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:14:57] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:14:57] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:14:57] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:14:57] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:14:57] [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 09:14:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:14:57] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:14:57] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:14:57] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 6 ms.
[2026-05-25 09:14:57] [INFO ] Added : 7 causal constraints over 4 iterations in 35 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5757] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5769] 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 5 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 5 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 09:15:01] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:01] [INFO ] Implicit Places using invariants in 65 ms returned []
[2026-05-25 09:15:01] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:01] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:15:01] [INFO ] Implicit Places using invariants and state equation in 171 ms returned []
Implicit Place search using SMT with State Equation took 237 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:15:01] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:15:02] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:02] [INFO ] Invariant cache hit.
[2026-05-25 09:15:02] [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
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 5986 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 09:15:11] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:15:11] [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 09:15:11] [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 09:15:11] [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 09:15:11] [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) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 14642 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: 5/5 constraints]
After SMT, in 20676ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 20678ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20929 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:15:22] [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 17 ms. (steps per millisecond=588 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[5769] Max Struct:[+inf]
[2026-05-25 09:15:22] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:22] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5769] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 930 ms. (1074 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 415 ms. (2403 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5769] Max Struct:[+inf]
[2026-05-25 09:15:24] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:24] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:15:24] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:15:24] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:15:24] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:15:24] [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 09:15:24] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:24] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:15:24] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:15:24] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 09:15:24] [INFO ] Added : 7 causal constraints over 4 iterations in 33 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5769] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5772] 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 09:15:28] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:28] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 09:15:28] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:28] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:15:28] [INFO ] Implicit Places using invariants and state equation in 173 ms returned []
Implicit Place search using SMT with State Equation took 244 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:15:28] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:15:28] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:28] [INFO ] Invariant cache hit.
[2026-05-25 09:15:28] [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) 0/74 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, 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 6128 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 09:15:38] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:15:38] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:15:38] [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 09:15:38] [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 09:15:38] [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) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 15264 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: 5/5 constraints]
After SMT, in 21436ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21438ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21691 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:15:49] [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 :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5772] Max Struct:[+inf]
[2026-05-25 09:15:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:49] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5772] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 938 ms. (1064 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 411 ms. (2427 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5772] Max Struct:[+inf]
[2026-05-25 09:15:51] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:51] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:51] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 09:15:51] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:15:51] [INFO ] [Real]Added 17 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:15:51] [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 09:15:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:51] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:15:51] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:15:51] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 09:15:51] [INFO ] Added : 7 causal constraints over 4 iterations in 33 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5772] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5774] 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 09:15:55] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:55] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 09:15:55] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:55] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:15:55] [INFO ] Implicit Places using invariants and state equation in 171 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 09:15:55] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:15:55] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:15:55] [INFO ] Invariant cache hit.
[2026-05-25 09:15:55] [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) 0/74 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, 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 6133 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 09:16:05] [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 09:16:05] [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 09:16:05] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:05] [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 09:16:05] [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, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 15148 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: 5/5 constraints]
After SMT, in 21326ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21327ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21577 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:16:17] [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 20 ms. (steps per millisecond=500 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5774] Max Struct:[+inf]
[2026-05-25 09:16:17] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:17] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5774] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 942 ms. (1060 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 424 ms. (2352 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5774] Max Struct:[+inf]
[2026-05-25 09:16:18] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:16:18] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:16:18] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:16:18] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:16:18] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:16:18] [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 09:16:18] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:16:18] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 09:16:18] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:16:18] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 09:16:18] [INFO ] Added : 7 causal constraints over 4 iterations in 47 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5774] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5779] 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 09:16:22] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:16:22] [INFO ] Implicit Places using invariants in 60 ms returned []
[2026-05-25 09:16:22] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:16:22] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:16:22] [INFO ] Implicit Places using invariants and state equation in 157 ms returned []
Implicit Place search using SMT with State Equation took 219 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:16:22] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:16:22] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:22] [INFO ] Invariant cache hit.
[2026-05-25 09:16:22] [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) 0/74 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, 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 6154 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 09:16:32] [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 09:16:32] [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 09:16:32] [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 09:16:32] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:32] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 15126 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: 5/5 constraints]
After SMT, in 21328ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21329ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21564 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:16:44] [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 29 ms. (steps per millisecond=344 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5779] Max Struct:[+inf]
[2026-05-25 09:16:44] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5779] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1012 ms. (987 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 416 ms. (2398 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5779] Max Struct:[+inf]
[2026-05-25 09:16:45] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:16:45] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:16:45] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 09:16:45] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:16:45] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:16:45] [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 09:16:45] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:16:45] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 09:16:45] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:16:45] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 7 ms.
[2026-05-25 09:16:45] [INFO ] Added : 7 causal constraints over 4 iterations in 37 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5779] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5787] 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 09:16:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:16:49] [INFO ] Implicit Places using invariants in 61 ms returned []
[2026-05-25 09:16:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:16:49] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:16:49] [INFO ] Implicit Places using invariants and state equation in 162 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 09:16:49] [INFO ] Redundant transitions in 0 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:16:49] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:16:49] [INFO ] Invariant cache hit.
[2026-05-25 09:16:49] [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
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 6116 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 09:16:59] [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 09:16:59] [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 09:16:59] [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 09:16:59] [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 09:16:59] [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, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 15153 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: 5/5 constraints]
After SMT, in 21311ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21312ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21554 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:17:11] [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 20 ms. (steps per millisecond=500 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5787] Max Struct:[+inf]
[2026-05-25 09:17:11] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:11] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5787] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 884 ms. (1129 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 427 ms. (2336 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5787] Max Struct:[+inf]
[2026-05-25 09:17:12] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:17:12] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:17:12] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:17:12] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:17:12] [INFO ] [Real]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:17:12] [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 09:17:12] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:17:12] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 09:17:12] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:17:12] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 09:17:12] [INFO ] Added : 7 causal constraints over 4 iterations in 33 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5787] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5795] 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 09:17:16] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:17:16] [INFO ] Implicit Places using invariants in 66 ms returned []
[2026-05-25 09:17:16] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:17:16] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:17:16] [INFO ] Implicit Places using invariants and state equation in 165 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 09:17:16] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:17:16] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:16] [INFO ] Invariant cache hit.
[2026-05-25 09:17:16] [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
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 6178 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 09:17:26] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:26] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:26] [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 09:17:26] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:26] [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) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 15016 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: 5/5 constraints]
After SMT, in 21243ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21243ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21484 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:17:38] [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 22 ms. (steps per millisecond=454 ) properties (out of 1) seen :[7]
Current structural bounds on expressions (after cover walk) : Max Seen:[5795] Max Struct:[+inf]
[2026-05-25 09:17:38] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:38] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5795] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 895 ms. (1116 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 411 ms. (2427 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5795] Max Struct:[+inf]
[2026-05-25 09:17:39] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:17:39] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:17:39] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:17:39] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:17:39] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:17:39] [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 09:17:39] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:17:39] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 09:17:39] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:17:39] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 09:17:39] [INFO ] Added : 7 causal constraints over 4 iterations in 33 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5795] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5800] 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 09:17:43] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:17:43] [INFO ] Implicit Places using invariants in 62 ms returned []
[2026-05-25 09:17:43] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:17:43] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:17:43] [INFO ] Implicit Places using invariants and state equation in 165 ms returned []
Implicit Place search using SMT with State Equation took 237 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:17:43] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:17:43] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:17:43] [INFO ] Invariant cache hit.
[2026-05-25 09:17:43] [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
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 6123 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 09:17:53] [INFO ] Deduced a trap along path composed of 3 places in 35 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:53] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:53] [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 09:17:53] [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 09:17:53] [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) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 15106 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: 5/5 constraints]
After SMT, in 21269ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21269ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21521 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:18:05] [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 23 ms. (steps per millisecond=434 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[5800] Max Struct:[+inf]
[2026-05-25 09:18:05] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:05] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[5800] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 908 ms. (1100 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 428 ms. (2331 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5800] Max Struct:[+inf]
[2026-05-25 09:18:06] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:18:06] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:18:06] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:18:06] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:18:06] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:18:06] [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 09:18:06] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:18:06] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:18:06] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:18:06] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 09:18:06] [INFO ] Added : 7 causal constraints over 4 iterations in 33 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5800] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5800] 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 09:18:10] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:10] [INFO ] Implicit Places using invariants in 64 ms returned []
[2026-05-25 09:18:10] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:10] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:18:10] [INFO ] Implicit Places using invariants and state equation in 160 ms returned []
Implicit Place search using SMT with State Equation took 225 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:18:10] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:18:10] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:10] [INFO ] Invariant cache hit.
[2026-05-25 09:18:10] [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
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 6052 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 09:18:20] [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 09:18:20] [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 09:18:20] [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 09:18:20] [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 09:18:20] [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, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 14762 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: 5/5 constraints]
After SMT, in 20860ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 20861ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21095 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:18:31] [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 23 ms. (steps per millisecond=434 ) properties (out of 1) seen :[7]
Current structural bounds on expressions (after cover walk) : Max Seen:[5800] Max Struct:[+inf]
[2026-05-25 09:18:31] [INFO ] Flatten gal took : 13 ms
[2026-05-25 09:18:31] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:18:31] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16596753754981595265.gal : 1 ms
[2026-05-25 09:18:31] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13236746766838082660.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/ReachabilityCardinality16596753754981595265.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13236746766838082660.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40000 steps (8 resets) in 77 ms. (512 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 ...330
BEST_FIRST walk for 40003 steps (8 resets) in 29 ms. (1333 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality13236746766838082660.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 913
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :913 after 34694
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :34694 after 75633
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :75633 after 99929
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :99929 after 345238
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :345238 after 1.63452e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.63452e+07 after 5.46883e+07
Interrupted probabilistic random walk after 1806952 steps, run timeout after 3001 ms. (steps per millisecond=602 ) properties seen :0 out of 1
Probabilistic random walk after 1806952 steps, saw 1131096 distinct states, run finished after 3001 ms. (steps per millisecond=602 ) properties seen :0
[2026-05-25 09:18:34] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:34] [INFO ] Invariant cache hit.
[2026-05-25 09:18:34] [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 78 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 119 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 202ms 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 87 ms. (454 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 32 ms. (1212 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :5.46883e+07 after 1.31225e+08
Interrupted probabilistic random walk after 2128307 steps, run timeout after 3001 ms. (steps per millisecond=709 ) properties seen :0 out of 1
Probabilistic random walk after 2128307 steps, saw 1351675 distinct states, run finished after 3001 ms. (steps per millisecond=709 ) properties seen :0
[2026-05-25 09:18:37] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:37] [INFO ] Invariant cache hit.
[2026-05-25 09:18:37] [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 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 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 93 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 181ms 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 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 09:18:38] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:38] [INFO ] Implicit Places using invariants in 48 ms returned []
[2026-05-25 09:18:38] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:38] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:18:38] [INFO ] Implicit Places using invariants and state equation in 166 ms returned []
Implicit Place search using SMT with State Equation took 214 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:18:38] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:18:38] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:18:38] [INFO ] Invariant cache hit.
[2026-05-25 09:18:38] [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
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 5995 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 09:18:47] [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 09:18:47] [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 09:18:48] [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 09:18:48] [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 09:18:48] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.31225e+08 after 2.8415e+08
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 14906 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: 5/5 constraints]
After SMT, in 20946ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 20947ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21171 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 18 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 09:18:59] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:18:59] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:18:59] [INFO ] After 38ms 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 09:18:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 09:18:59] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 09:18:59] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:18:59] [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 09:18:59] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:18:59] [INFO ] After 32ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:18:59] [INFO ] Flatten gal took : 1 ms
[2026-05-25 09:18:59] [INFO ] Flatten gal took : 1 ms
[2026-05-25 09:18:59] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12344712310552621855.gal : 0 ms
[2026-05-25 09:18:59] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6965301532088895513.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/ReachabilityCardinality12344712310552621855.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6965301532088895513.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/ReachabilityCardinality6965301532088895513.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 45
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :45 after 285
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :285 after 625
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :625 after 1285
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :1285 after 2585
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :2585 after 5165
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :5165 after 10305
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :10305 after 20565
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :20565 after 41065
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :41065 after 82045
Detected timeout of ITS tools.
[2026-05-25 09:19:14] [INFO ] Flatten gal took : 4 ms
[2026-05-25 09:19:14] [INFO ] Applying decomposition
[2026-05-25 09:19:14] [INFO ] Flatten gal took : 3 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/graph16427700565729008825.txt' '-o' '/tmp/graph16427700565729008825.bin' '-w' '/tmp/graph16427700565729008825.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph16427700565729008825.bin' '-l' '-1' '-v' '-w' '/tmp/graph16427700565729008825.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:19:14] [INFO ] Decomposing Gal with order
[2026-05-25 09:19:14] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:19:14] [INFO ] Removed a total of 22 redundant transitions.
[2026-05-25 09:19:14] [INFO ] Flatten gal took : 5 ms
[2026-05-25 09:19:14] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 0 ms.
[2026-05-25 09:19:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5726716473975267473.gal : 1 ms
[2026-05-25 09:19:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10370849301895660360.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/ReachabilityCardinality5726716473975267473.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10370849301895660360.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/ReachabilityCardinality10370849301895660360.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 30
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :30 after 138
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :138 after 2676
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :2676 after 67356
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :67356 after 449556
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :449556 after 2.20912e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.20912e+06 after 9.68268e+06
Detected timeout of ITS tools.
[2026-05-25 09:19:21] [INFO ] Flatten gal took : 5 ms
[2026-05-25 09:19:21] [INFO ] Applying decomposition
[2026-05-25 09:19:21] [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/graph11899053375538699737.txt' '-o' '/tmp/graph11899053375538699737.bin' '-w' '/tmp/graph11899053375538699737.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph11899053375538699737.bin' '-l' '-1' '-v' '-w' '/tmp/graph11899053375538699737.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:19:21] [INFO ] Decomposing Gal with order
[2026-05-25 09:19:21] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:19:21] [INFO ] Removed a total of 316 redundant transitions.
[2026-05-25 09:19:21] [INFO ] Flatten gal took : 11 ms
[2026-05-25 09:19:21] [INFO ] Fuse similar labels procedure discarded/fused a total of 92 labels/synchronizations in 3 ms.
[2026-05-25 09:19:21] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8147317124606970460.gal : 2 ms
[2026-05-25 09:19:21] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality848707876359665353.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/ReachabilityCardinality8147317124606970460.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality848707876359665353.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 ...306
Loading property file /tmp/ReachabilityCardinality848707876359665353.prop.
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :9.68268e+06 after 4.04011e+07
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30196 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:[5800] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b004-UpperBounds-08 in 301129 ms.
Starting property specific reduction for FunctionPointer-PT-b004-UpperBounds-09
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 09:19:29] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:19:29] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10001 steps (2 resets) in 18 ms. (526 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[8] Max Struct:[+inf]
[2026-05-25 09:19:29] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:19:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:19:29] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:19:29] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:19:29] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:19:29] [INFO ] [Real]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:19:29] [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 09:19:29] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:19:29] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:19:29] [INFO ] [Nat]Added 29 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:19:29] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:19:29] [INFO ] Added : 16 causal constraints over 5 iterations in 63 ms. Result :sat
Minimization took 30 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[8] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[8] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 12 place count 101 transition count 262
Iterating global reduction 1 with 6 rules applied. Total rules applied 18 place count 101 transition count 262
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 24 place count 101 transition count 256
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 28 place count 97 transition count 244
Iterating global reduction 2 with 4 rules applied. Total rules applied 32 place count 97 transition count 244
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 36 place count 97 transition count 240
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 38 place count 95 transition count 236
Iterating global reduction 3 with 2 rules applied. Total rules applied 40 place count 95 transition count 236
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 42 place count 93 transition count 230
Iterating global reduction 3 with 2 rules applied. Total rules applied 44 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 46 place count 91 transition count 226
Iterating global reduction 3 with 2 rules applied. Total rules applied 48 place count 91 transition count 226
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 50 place count 89 transition count 222
Iterating global reduction 3 with 2 rules applied. Total rules applied 52 place count 89 transition count 222
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 54 place count 87 transition count 218
Iterating global reduction 3 with 2 rules applied. Total rules applied 56 place count 87 transition count 218
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 58 place count 85 transition count 214
Iterating global reduction 3 with 2 rules applied. Total rules applied 60 place count 85 transition count 214
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 61 place count 84 transition count 212
Iterating global reduction 3 with 1 rules applied. Total rules applied 62 place count 84 transition count 212
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 63 place count 83 transition count 210
Iterating global reduction 3 with 1 rules applied. Total rules applied 64 place count 83 transition count 210
Applied a total of 64 rules in 15 ms. Remains 83 /110 variables (removed 27) and now considering 210/283 (removed 73) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 83/110 places, 210/283 transitions.
[2026-05-25 09:19:29] [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 22 ms. (steps per millisecond=454 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[8] Max Struct:[+inf]
[2026-05-25 09:19:29] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
// Phase 1: matrix 130 rows 83 cols
[2026-05-25 09:19:29] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[8] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 946 ms. (1055 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 440 ms. (2267 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[235] Max Struct:[+inf]
[2026-05-25 09:19:31] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:19:31] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:19:31] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:19:31] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:19:31] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:19:31] [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 09:19:31] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:19:31] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:19:31] [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 09:19:31] [INFO ] Deduced a trap composed of 14 places in 59 ms of which 4 ms to minimize.
[2026-05-25 09:19:31] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 74 ms
[2026-05-25 09:19:31] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 8 ms.
[2026-05-25 09:19:31] [INFO ] Added : 15 causal constraints over 4 iterations in 46 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[235] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[235] 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 2 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 3 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 09:19:32] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:19:32] [INFO ] Implicit Places using invariants in 60 ms returned []
[2026-05-25 09:19:32] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:19:32] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:19:32] [INFO ] Implicit Places using invariants and state equation in 168 ms returned []
Implicit Place search using SMT with State Equation took 230 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:19:32] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:19:32] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:32] [INFO ] Invariant cache hit.
[2026-05-25 09:19:32] [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 3874 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:40] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:40] [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 09:19:40] [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 09:19:40] [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 09:19:41] [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 09:19:42] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 6/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 17697 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: 6/6 constraints]
After SMT, in 21622ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 21623ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21863 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:19:54] [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 23 ms. (steps per millisecond=434 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[235] Max Struct:[+inf]
[2026-05-25 09:19:54] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:54] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[235] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 942 ms. (1060 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 452 ms. (2207 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[236] Max Struct:[+inf]
[2026-05-25 09:19:55] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:19:55] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:19:55] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 09:19:55] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:19:55] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:19:55] [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 09:19:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:19:55] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 09:19:55] [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 09:19:55] [INFO ] Deduced a trap composed of 14 places in 61 ms of which 4 ms to minimize.
[2026-05-25 09:19:55] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 09:19:55] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 9 ms.
[2026-05-25 09:19:55] [INFO ] Added : 15 causal constraints over 4 iterations in 53 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[236] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[236] 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 2 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 09:19:56] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:19:56] [INFO ] Implicit Places using invariants in 65 ms returned []
[2026-05-25 09:19:56] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:19:56] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:19:56] [INFO ] Implicit Places using invariants and state equation in 172 ms returned []
Implicit Place search using SMT with State Equation took 237 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:19:56] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:19:56] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:19:56] [INFO ] Invariant cache hit.
[2026-05-25 09:19:56] [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 3963 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:04] [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 09:20:04] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:04] [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 09:20:04] [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 09:20:05] [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 09:20:06] [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) 0/213 variables, 6/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 18190 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: 6/6 constraints]
After SMT, in 22205ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 22206ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22458 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:20:18] [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 21 ms. (steps per millisecond=476 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[236] Max Struct:[+inf]
[2026-05-25 09:20:18] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:18] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[236] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 980 ms. (1019 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 465 ms. (2145 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[344] Max Struct:[+inf]
[2026-05-25 09:20:20] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:20:20] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:20:20] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:20:20] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:20:20] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:20:20] [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 09:20:20] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:20:20] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:20:20] [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 09:20:20] [INFO ] Deduced a trap composed of 14 places in 74 ms of which 5 ms to minimize.
[2026-05-25 09:20:20] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 82 ms
[2026-05-25 09:20:20] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 6 ms.
[2026-05-25 09:20:20] [INFO ] Added : 15 causal constraints over 4 iterations in 41 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[344] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[344] 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 09:20:21] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:20:21] [INFO ] Implicit Places using invariants in 66 ms returned []
[2026-05-25 09:20:21] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:20:21] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:20:21] [INFO ] Implicit Places using invariants and state equation in 172 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 09:20:21] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:20:21] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:21] [INFO ] Invariant cache hit.
[2026-05-25 09:20:21] [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 3994 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:29] [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 09:20:29] [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 09:20:29] [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 09:20:29] [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 09:20:30] [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 09:20:31] [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) 0/213 variables, 6/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 18172 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: 6/6 constraints]
After SMT, in 22221ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 22222ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22475 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:20:43] [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 :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[344] Max Struct:[+inf]
[2026-05-25 09:20:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[344] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1111 ms. (899 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 419 ms. (2380 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[344] Max Struct:[+inf]
[2026-05-25 09:20:45] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:20:45] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:20:45] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:20:45] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:20:45] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:20:45] [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 09:20:45] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:20:45] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:20:45] [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 09:20:45] [INFO ] Deduced a trap composed of 14 places in 61 ms of which 5 ms to minimize.
[2026-05-25 09:20:45] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 73 ms
[2026-05-25 09:20:45] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 7 ms.
[2026-05-25 09:20:45] [INFO ] Added : 15 causal constraints over 4 iterations in 45 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[344] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[344] 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 2 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 4 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 09:20:46] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:20:46] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 09:20:46] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:20:46] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:20:46] [INFO ] Implicit Places using invariants and state equation in 169 ms returned []
Implicit Place search using SMT with State Equation took 241 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:20:46] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:20:46] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:20:46] [INFO ] Invariant cache hit.
[2026-05-25 09:20:46] [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 3978 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:54] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:54] [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 09:20:54] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:54] [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 09:20:55] [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 09:20:56] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 6/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 17968 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: 6/6 constraints]
After SMT, in 22010ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 22012ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22268 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:21:08] [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 22 ms. (steps per millisecond=454 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[344] Max Struct:[+inf]
[2026-05-25 09:21:09] [INFO ] Flatten gal took : 14 ms
[2026-05-25 09:21:09] [INFO ] Flatten gal took : 6 ms
RANDOM walk for 40003 steps (8 resets) in 91 ms. (434 steps per ms) remains 1/1 properties
[2026-05-25 09:21:09] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11864658030835407115.gal : 2 ms
[2026-05-25 09:21:09] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10528049261083595191.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/ReachabilityCardinality11864658030835407115.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10528049261083595191.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
BEST_FIRST walk for 40003 steps (8 resets) in 27 ms. (1428 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality10528049261083595191.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 922
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :922 after 39179
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :39179 after 127639
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :127639 after 2.66124e+06
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.66124e+06 after 8.93582e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :8.93582e+06 after 2.13884e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.13884e+07 after 4.61972e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :4.61972e+07 after 9.57181e+07
Interrupted probabilistic random walk after 2020713 steps, run timeout after 3001 ms. (steps per millisecond=673 ) properties seen :0 out of 1
Probabilistic random walk after 2020713 steps, saw 1295740 distinct states, run finished after 3001 ms. (steps per millisecond=673 ) properties seen :0
[2026-05-25 09:21:12] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:21:12] [INFO ] Invariant cache hit.
[2026-05-25 09:21:12] [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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 7/84 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/84 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 102/186 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/186 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/192 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/192 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/206 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/206 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/210 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/210 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/213 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 87 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/77 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/84 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/84 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 102/186 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/186 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/192 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/192 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 14/206 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/206 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/210 variables, 2/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/213 variables, 2/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/213 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/213 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 102 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 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
Parikh walk visited 0 properties in 0 ms.
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 4 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 4 ms. Remains : 83/83 places, 210/210 transitions.
RANDOM walk for 40006 steps (8 resets) in 74 ms. (533 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 27 ms. (1428 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2022202 steps, run timeout after 3001 ms. (steps per millisecond=673 ) properties seen :0 out of 1
Probabilistic random walk after 2022202 steps, saw 1296761 distinct states, run finished after 3001 ms. (steps per millisecond=673 ) properties seen :0
[2026-05-25 09:21:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:21:15] [INFO ] Invariant cache hit.
[2026-05-25 09:21:15] [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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 7/84 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/84 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 102/186 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/186 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/192 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/192 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/206 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/206 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/210 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/210 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/213 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 90 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/77 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/84 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/84 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 102/186 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/186 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/192 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/192 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 14/206 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/206 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/210 variables, 2/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/213 variables, 2/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/213 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/213 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 111 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 204ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
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 3 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 09:21:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:21:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:21:15] [INFO ] Implicit Places using invariants in 60 ms returned []
[2026-05-25 09:21:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:21:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:21:15] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:21:15] [INFO ] Implicit Places using invariants and state equation in 156 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 09:21:15] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:21:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:21:15] [INFO ] Invariant cache hit.
[2026-05-25 09:21:15] [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 3948 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
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :9.57181e+07 after 1.94663e+08
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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:21:23] [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 09:21:23] [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 09:21:23] [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 09:21:23] [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 09:21:24] [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 09:21:25] [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) 0/213 variables, 6/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 17838 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: 6/6 constraints]
After SMT, in 21836ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 21837ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22070 ms. Remains : 83/83 places, 210/210 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 8 transitions
Trivial Post-agglo rules discarded 8 transitions
Performed 8 trivial Post agglomeration. Transition count delta: 8
Iterating post reduction 0 with 88 rules applied. Total rules applied 88 place count 83 transition count 122
Reduce places removed 8 places and 0 transitions.
Iterating post reduction 1 with 8 rules applied. Total rules applied 96 place count 75 transition count 122
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 96 place count 75 transition count 106
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 128 place count 59 transition count 106
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 158 place count 44 transition count 91
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 165 place count 37 transition count 77
Iterating global reduction 2 with 7 rules applied. Total rules applied 172 place count 37 transition count 77
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 179 place count 30 transition count 63
Iterating global reduction 2 with 7 rules applied. Total rules applied 186 place count 30 transition count 63
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 193 place count 23 transition count 49
Iterating global reduction 2 with 7 rules applied. Total rules applied 200 place count 23 transition count 49
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 207 place count 23 transition count 42
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 207 place count 23 transition count 41
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 209 place count 22 transition count 41
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 213 place count 20 transition count 41
Applied a total of 213 rules in 16 ms. Remains 20 /83 variables (removed 63) and now considering 41/210 (removed 169) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 41 rows 20 cols
[2026-05-25 09:21:37] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:21:37] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:21:37] [INFO ] After 8ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 09:21:37] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:21:37] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 09:21:37] [INFO ] After 34ms 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 09:21:37] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:21:37] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 09:21:37] [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 09:21:37] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:21:37] [INFO ] After 33ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:21:37] [INFO ] Flatten gal took : 2 ms
[2026-05-25 09:21:37] [INFO ] Flatten gal took : 2 ms
[2026-05-25 09:21:37] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14955217136281622368.gal : 0 ms
[2026-05-25 09:21:37] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality16766715276188724893.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/ReachabilityCardinality14955217136281622368.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality16766715276188724893.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/ReachabilityCardinality16766715276188724893.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 60
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :60 after 900
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :900 after 4560
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :4560 after 19900
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :19900 after 81980
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :81980 after 330300
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :330300 after 1.32104e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.32104e+06 after 5.2737e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.2737e+06 after 2.10536e+07
Detected timeout of ITS tools.
[2026-05-25 09:21:52] [INFO ] Flatten gal took : 3 ms
[2026-05-25 09:21:52] [INFO ] Applying decomposition
[2026-05-25 09:21:52] [INFO ] Flatten gal took : 3 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/graph17759234736506361862.txt' '-o' '/tmp/graph17759234736506361862.bin' '-w' '/tmp/graph17759234736506361862.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph17759234736506361862.bin' '-l' '-1' '-v' '-w' '/tmp/graph17759234736506361862.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:21:52] [INFO ] Decomposing Gal with order
[2026-05-25 09:21:52] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:21:52] [INFO ] Removed a total of 47 redundant transitions.
[2026-05-25 09:21:52] [INFO ] Flatten gal took : 3 ms
[2026-05-25 09:21:52] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 09:21:52] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5355493065279772399.gal : 0 ms
[2026-05-25 09:21:52] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality62877929988631449.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/ReachabilityCardinality5355493065279772399.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality62877929988631449.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 ...305
Loading property file /tmp/ReachabilityCardinality62877929988631449.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 30
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :30 after 265
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :265 after 585
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :585 after 1225
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :1225 after 2505
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :2505 after 5065
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :5065 after 10185
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :10185 after 20425
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :20425 after 40905
Detected timeout of ITS tools.
[2026-05-25 09:21:59] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:21:59] [INFO ] Applying decomposition
[2026-05-25 09:21:59] [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/graph15316645624160690994.txt' '-o' '/tmp/graph15316645624160690994.bin' '-w' '/tmp/graph15316645624160690994.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph15316645624160690994.bin' '-l' '-1' '-v' '-w' '/tmp/graph15316645624160690994.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:21:59] [INFO ] Decomposing Gal with order
[2026-05-25 09:21:59] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:21:59] [INFO ] Removed a total of 360 redundant transitions.
[2026-05-25 09:21:59] [INFO ] Flatten gal took : 11 ms
[2026-05-25 09:21:59] [INFO ] Fuse similar labels procedure discarded/fused a total of 106 labels/synchronizations in 4 ms.
[2026-05-25 09:21:59] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6258526931443957451.gal : 1 ms
[2026-05-25 09:21:59] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1525903803039281896.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/ReachabilityCardinality6258526931443957451.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1525903803039281896.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/ReachabilityCardinality1525903803039281896.prop.
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :40905 after 81865
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30173 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:[344] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b004-UpperBounds-09 in 158202 ms.
Starting property specific reduction for FunctionPointer-PT-b004-UpperBounds-10
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 09:22:07] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:22:07] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10002 steps (2 resets) in 15 ms. (625 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:[14] Max Struct:[+inf]
[2026-05-25 09:22:07] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:22:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:22:07] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:22:07] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:22:07] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:22:07] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:22:07] [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 09:22:07] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:07] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:22:07] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:08] [INFO ] Deduced a trap composed of 17 places in 70 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:08] [INFO ] Deduced a trap composed of 20 places in 81 ms of which 6 ms to minimize.
[2026-05-25 09:22:08] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 174 ms
[2026-05-25 09:22:08] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 8 ms.
[2026-05-25 09:22:08] [INFO ] Added : 20 causal constraints over 5 iterations in 67 ms. Result :sat
Minimization took 33 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[14] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[14] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 12 place count 101 transition count 264
Iterating global reduction 1 with 6 rules applied. Total rules applied 18 place count 101 transition count 264
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 24 place count 101 transition count 258
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 29 place count 96 transition count 242
Iterating global reduction 2 with 5 rules applied. Total rules applied 34 place count 96 transition count 242
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 38 place count 96 transition count 238
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 41 place count 93 transition count 232
Iterating global reduction 3 with 3 rules applied. Total rules applied 44 place count 93 transition count 232
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 47 place count 90 transition count 222
Iterating global reduction 3 with 3 rules applied. Total rules applied 50 place count 90 transition count 222
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 53 place count 87 transition count 216
Iterating global reduction 3 with 3 rules applied. Total rules applied 56 place count 87 transition count 216
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 59 place count 84 transition count 210
Iterating global reduction 3 with 3 rules applied. Total rules applied 62 place count 84 transition count 210
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 65 place count 81 transition count 204
Iterating global reduction 3 with 3 rules applied. Total rules applied 68 place count 81 transition count 204
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 71 place count 78 transition count 198
Iterating global reduction 3 with 3 rules applied. Total rules applied 74 place count 78 transition count 198
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 76 place count 76 transition count 194
Iterating global reduction 3 with 2 rules applied. Total rules applied 78 place count 76 transition count 194
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 80 place count 74 transition count 190
Iterating global reduction 3 with 2 rules applied. Total rules applied 82 place count 74 transition count 190
Applied a total of 82 rules in 17 ms. Remains 74 /110 variables (removed 36) and now considering 190/283 (removed 93) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17 ms. Remains : 74/110 places, 190/283 transitions.
[2026-05-25 09:22:08] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 51=1, 80=1, 111=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 54=1, 99=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=454 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[14] Max Struct:[+inf]
[2026-05-25 09:22:08] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
// Phase 1: matrix 114 rows 74 cols
[2026-05-25 09:22:08] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[14] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 920 ms. (1085 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 399 ms. (2500 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1339] Max Struct:[+inf]
[2026-05-25 09:22:09] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 09:22:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:22:09] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:09] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:22:09] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 09:22:09] [INFO ] [Real]Added 15 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:22:09] [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 09:22:09] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:22:09] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 09:22:09] [INFO ] [Nat]Added 15 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:09] [INFO ] Deduced a trap composed of 13 places in 59 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:09] [INFO ] Deduced a trap composed of 20 places in 47 ms of which 4 ms to minimize.
[2026-05-25 09:22:09] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 117 ms
[2026-05-25 09:22:09] [INFO ] Computed and/alt/rep : 60/163/51 causal constraints (skipped 61 transitions) in 6 ms.
[2026-05-25 09:22:09] [INFO ] Added : 18 causal constraints over 4 iterations in 37 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1339] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1339] Max Struct:[+inf]
Support contains 1 out of 74 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 190/190 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 190/190 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 74/74 places, 190/190 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 74/74 places, 190/190 transitions.
Applied a total of 0 rules in 2 ms. Remains 74 /74 variables (removed 0) and now considering 190/190 (removed 0) transitions.
[2026-05-25 09:22:12] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 09:22:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:12] [INFO ] Implicit Places using invariants in 84 ms returned []
[2026-05-25 09:22:12] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 09:22:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:12] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 09:22:12] [INFO ] Implicit Places using invariants and state equation in 153 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 09:22:12] [INFO ] Redundant transitions in 1 ms returned []
Running 188 sub problems to find dead transitions.
[2026-05-25 09:22:12] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 09:22:12] [INFO ] Invariant cache hit.
[2026-05-25 09:22:12] [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) 0/74 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (OVERLAPS) 114/188 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 15/92 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 5 (OVERLAPS) 0/188 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Real declared 188/188 variables, and 92 constraints, problems are : Problem set: 0 solved, 188 unsolved in 4593 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 188 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, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/74 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (OVERLAPS) 114/188 variables, 74/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 15/92 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 188/280 constraints. Problems are: Problem set: 0 solved, 188 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:20] [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 09:22:20] [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 09:22:20] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:20] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:20] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/188 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/188 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 188 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:29] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/188 variables, 1/286 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/188 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 9 (OVERLAPS) 0/188 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Int declared 188/188 variables, and 286 constraints, problems are : Problem set: 0 solved, 188 unsolved in 24476 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 74/74 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 29114ms problems are : Problem set: 0 solved, 188 unsolved
Search for dead transitions found 0 dead transitions in 29115ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29366 ms. Remains : 74/74 places, 190/190 transitions.
[2026-05-25 09:22:41] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 51=1, 80=1, 111=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 54=1, 99=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 22 ms. (steps per millisecond=454 ) properties (out of 1) seen :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 09:22:42] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 09:22:42] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000002 steps (2 resets) in 965 ms. (1035 steps per ms)
FORMULA FunctionPointer-PT-b004-UpperBounds-10 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
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 09:22:43] [INFO ] Flatten gal took : 13 ms
[2026-05-25 09:22:43] [INFO ] Flatten gal took : 6 ms
[2026-05-25 09:22:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4358819199317839636.gal : 1 ms
[2026-05-25 09:22:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8247489973558708717.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/ReachabilityCardinality4358819199317839636.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8247489973558708717.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
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 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-b004-UpperBounds-10 in 35289 ms.
Starting property specific reduction for FunctionPointer-PT-b004-UpperBounds-12
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 09:22:43] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:22:43] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10003 steps (2 resets) in 18 ms. (526 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:[11] Max Struct:[+inf]
[2026-05-25 09:22:43] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:22:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:22:43] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:43] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:22:43] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:22:43] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:22:43] [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 09:22:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:22:43] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:22:43] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:43] [INFO ] Deduced a trap composed of 17 places in 69 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:43] [INFO ] Deduced a trap composed of 17 places in 55 ms of which 4 ms to minimize.
[2026-05-25 09:22:43] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 141 ms
[2026-05-25 09:22:43] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 10 ms.
[2026-05-25 09:22:43] [INFO ] Added : 9 causal constraints over 3 iterations in 54 ms. Result :sat
Minimization took 33 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[11] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[11] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 12 place count 101 transition count 262
Iterating global reduction 1 with 6 rules applied. Total rules applied 18 place count 101 transition count 262
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 24 place count 101 transition count 256
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 28 place count 97 transition count 244
Iterating global reduction 2 with 4 rules applied. Total rules applied 32 place count 97 transition count 244
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 36 place count 97 transition count 240
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 38 place count 95 transition count 236
Iterating global reduction 3 with 2 rules applied. Total rules applied 40 place count 95 transition count 236
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 42 place count 93 transition count 228
Iterating global reduction 3 with 2 rules applied. Total rules applied 44 place count 93 transition count 228
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 46 place count 91 transition count 224
Iterating global reduction 3 with 2 rules applied. Total rules applied 48 place count 91 transition count 224
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 50 place count 89 transition count 220
Iterating global reduction 3 with 2 rules applied. Total rules applied 52 place count 89 transition count 220
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 54 place count 87 transition count 216
Iterating global reduction 3 with 2 rules applied. Total rules applied 56 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 58 place count 85 transition count 212
Iterating global reduction 3 with 2 rules applied. Total rules applied 60 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 62 place count 83 transition count 208
Iterating global reduction 3 with 2 rules applied. Total rules applied 64 place count 83 transition count 208
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 66 place count 81 transition count 204
Iterating global reduction 3 with 2 rules applied. Total rules applied 68 place count 81 transition count 204
Applied a total of 68 rules in 14 ms. Remains 81 /110 variables (removed 29) and now considering 204/283 (removed 79) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 81/110 places, 204/283 transitions.
[2026-05-25 09:22:43] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {31=1, 63=1, 109=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 63=1, 109=1, 123=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 :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 09:22:43] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
// Phase 1: matrix 125 rows 81 cols
[2026-05-25 09:22:43] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1138 ms. (877 steps per ms)
FORMULA FunctionPointer-PT-b004-UpperBounds-12 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
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 09:22:44] [INFO ] Flatten gal took : 12 ms
[2026-05-25 09:22:44] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:22:44] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13235846479529634539.gal : 1 ms
[2026-05-25 09:22:44] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13991164205399431995.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/ReachabilityCardinality13235846479529634539.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13991164205399431995.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
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
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-b004-UpperBounds-12 in 1716 ms.
Starting property specific reduction for FunctionPointer-PT-b004-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 09:22:44] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:22:44] [INFO ] Computed 3 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10001 steps (2 resets) in 13 ms. (714 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:[8] Max Struct:[+inf]
[2026-05-25 09:22:44] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:22:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:22:44] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:44] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:22:44] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:22:44] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:22:44] [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 09:22:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:22:44] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:22:44] [INFO ] [Nat]Added 29 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:45] [INFO ] Deduced a trap composed of 17 places in 70 ms of which 3 ms to minimize.
[2026-05-25 09:22:45] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 87 ms
[2026-05-25 09:22:45] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 9 ms.
[2026-05-25 09:22:45] [INFO ] Added : 28 causal constraints over 6 iterations in 90 ms. Result :sat
Minimization took 32 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[8] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[8] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 6 places :
Symmetric choice reduction at 1 with 6 rule applications. Total rules 12 place count 101 transition count 262
Iterating global reduction 1 with 6 rules applied. Total rules applied 18 place count 101 transition count 262
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 24 place count 101 transition count 256
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 28 place count 97 transition count 244
Iterating global reduction 2 with 4 rules applied. Total rules applied 32 place count 97 transition count 244
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 36 place count 97 transition count 240
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 38 place count 95 transition count 236
Iterating global reduction 3 with 2 rules applied. Total rules applied 40 place count 95 transition count 236
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 42 place count 93 transition count 230
Iterating global reduction 3 with 2 rules applied. Total rules applied 44 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 46 place count 91 transition count 226
Iterating global reduction 3 with 2 rules applied. Total rules applied 48 place count 91 transition count 226
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 50 place count 89 transition count 222
Iterating global reduction 3 with 2 rules applied. Total rules applied 52 place count 89 transition count 222
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 54 place count 87 transition count 218
Iterating global reduction 3 with 2 rules applied. Total rules applied 56 place count 87 transition count 218
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 58 place count 85 transition count 214
Iterating global reduction 3 with 2 rules applied. Total rules applied 60 place count 85 transition count 214
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 61 place count 84 transition count 212
Iterating global reduction 3 with 1 rules applied. Total rules applied 62 place count 84 transition count 212
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 63 place count 83 transition count 210
Iterating global reduction 3 with 1 rules applied. Total rules applied 64 place count 83 transition count 210
Applied a total of 64 rules in 16 ms. Remains 83 /110 variables (removed 27) and now considering 210/283 (removed 73) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 83/110 places, 210/283 transitions.
[2026-05-25 09:22:45] [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 26 ms. (steps per millisecond=384 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[8] Max Struct:[+inf]
[2026-05-25 09:22:45] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
// Phase 1: matrix 130 rows 83 cols
[2026-05-25 09:22:45] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[8] Max Struct:[+inf]
RANDOM walk for 1000004 steps (2 resets) in 1067 ms. (936 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 468 ms. (2132 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[238] Max Struct:[+inf]
[2026-05-25 09:22:46] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:22:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:22:46] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:46] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:22:46] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:46] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:22:46] [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 09:22:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:46] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:22:46] [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 09:22:47] [INFO ] Deduced a trap composed of 14 places in 58 ms of which 4 ms to minimize.
[2026-05-25 09:22:47] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 69 ms
[2026-05-25 09:22:47] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 8 ms.
[2026-05-25 09:22:47] [INFO ] Added : 19 causal constraints over 5 iterations in 51 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[238] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[238] 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 3 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 09:22:47] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:22:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:47] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 09:22:47] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:22:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:47] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:47] [INFO ] Implicit Places using invariants and state equation in 177 ms returned []
Implicit Place search using SMT with State Equation took 246 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:22:47] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:22:47] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:22:47] [INFO ] Invariant cache hit.
[2026-05-25 09:22:47] [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 3868 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:55] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:22:55] [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 09:22:55] [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 09:22:55] [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 09:22:56] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 5/317 constraints. Problems are: Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:23:02] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 8 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 22716 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: 6/6 constraints]
After SMT, in 26641ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26642ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26901 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:23:14] [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 19 ms. (steps per millisecond=526 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[238] Max Struct:[+inf]
[2026-05-25 09:23:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:14] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[238] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 933 ms. (1070 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 429 ms. (2325 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[255] Max Struct:[+inf]
[2026-05-25 09:23:15] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:23:16] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:23:16] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:23:16] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:23:16] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:23:16] [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 09:23:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:23:16] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:23:16] [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 09:23:16] [INFO ] Deduced a trap composed of 14 places in 56 ms of which 6 ms to minimize.
[2026-05-25 09:23:16] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 65 ms
[2026-05-25 09:23:16] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 6 ms.
[2026-05-25 09:23:16] [INFO ] Added : 19 causal constraints over 5 iterations in 47 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[255] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[255] 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 09:23:16] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:16] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 09:23:16] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:16] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:23:17] [INFO ] Implicit Places using invariants and state equation in 170 ms returned []
Implicit Place search using SMT with State Equation took 258 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:23:17] [INFO ] Redundant transitions in 1 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:23:17] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:17] [INFO ] Invariant cache hit.
[2026-05-25 09:23:17] [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 4001 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:23:25] [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 09:23:25] [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 09:23:25] [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 09:23:25] [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 09:23:25] [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) 0/213 variables, 5/317 constraints. Problems are: Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:23:31] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 8 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 22071 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: 6/6 constraints]
After SMT, in 26124ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26125ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26392 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:23:43] [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 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[255] Max Struct:[+inf]
[2026-05-25 09:23:43] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:43] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[255] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 941 ms. (1061 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 444 ms. (2247 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[276] Max Struct:[+inf]
[2026-05-25 09:23:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:23:44] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:23:44] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:23:44] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:23:44] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:23:44] [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 09:23:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:23:44] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 09:23:44] [INFO ] [Nat]Added 18 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:23:44] [INFO ] Deduced a trap composed of 14 places in 50 ms of which 5 ms to minimize.
[2026-05-25 09:23:44] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 60 ms
[2026-05-25 09:23:44] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 7 ms.
[2026-05-25 09:23:44] [INFO ] Added : 19 causal constraints over 5 iterations in 52 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[276] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[276] 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 2 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 09:23:45] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:45] [INFO ] Implicit Places using invariants in 66 ms returned []
[2026-05-25 09:23:45] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:45] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:23:45] [INFO ] Implicit Places using invariants and state equation in 169 ms returned []
Implicit Place search using SMT with State Equation took 236 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:23:45] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:23:45] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:23:45] [INFO ] Invariant cache hit.
[2026-05-25 09:23:45] [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 3802 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:23:53] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:23:53] [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 09:23:53] [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 09:23:53] [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 09:23:53] [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) 0/213 variables, 5/317 constraints. Problems are: Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:23:59] [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) 0/213 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 8 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 22475 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: 6/6 constraints]
After SMT, in 26331ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26332ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26582 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:24:12] [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 29 ms. (steps per millisecond=344 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[276] Max Struct:[+inf]
[2026-05-25 09:24:12] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:12] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[276] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 927 ms. (1077 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 434 ms. (2298 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[276] Max Struct:[+inf]
[2026-05-25 09:24:13] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:24:13] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:24:13] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 09:24:13] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:24:13] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:24:13] [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 09:24:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:24:13] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:24:13] [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 09:24:13] [INFO ] Deduced a trap composed of 14 places in 61 ms of which 4 ms to minimize.
[2026-05-25 09:24:13] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 70 ms
[2026-05-25 09:24:13] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 5 ms.
[2026-05-25 09:24:13] [INFO ] Added : 19 causal constraints over 5 iterations in 45 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[276] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[276] 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 09:24:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:24:14] [INFO ] Implicit Places using invariants in 65 ms returned []
[2026-05-25 09:24:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:24:14] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:24:14] [INFO ] Implicit Places using invariants and state equation in 194 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 09:24:14] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:24:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:14] [INFO ] Invariant cache hit.
[2026-05-25 09:24:14] [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 3786 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:22] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:22] [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 09:24:22] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:22] [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 09:24:22] [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) 0/213 variables, 5/317 constraints. Problems are: Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:28] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 8 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 22669 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: 6/6 constraints]
After SMT, in 26506ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26507ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26782 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 09:24:41] [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 23 ms. (steps per millisecond=434 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[276] Max Struct:[+inf]
[2026-05-25 09:24:41] [INFO ] Flatten gal took : 21 ms
[2026-05-25 09:24:41] [INFO ] Flatten gal took : 14 ms
[2026-05-25 09:24:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11131157030540283885.gal : 1 ms
[2026-05-25 09:24:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9654842211430028155.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/ReachabilityCardinality11131157030540283885.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9654842211430028155.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40001 steps (8 resets) in 91 ms. (434 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 ...329
BEST_FIRST walk for 40002 steps (8 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality9654842211430028155.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 925
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :925 after 40776
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :40776 after 139747
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :139747 after 224571
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :224571 after 417621
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :417621 after 803710
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :803710 after 1.55993e+06
Interrupted probabilistic random walk after 2000792 steps, run timeout after 3001 ms. (steps per millisecond=666 ) properties seen :0 out of 1
Probabilistic random walk after 2000792 steps, saw 1282081 distinct states, run finished after 3001 ms. (steps per millisecond=666 ) properties seen :0
[2026-05-25 09:24:44] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:44] [INFO ] Invariant cache hit.
[2026-05-25 09:24:44] [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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 7/84 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/84 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 102/186 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/186 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/192 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/192 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/206 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/206 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/210 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/210 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/213 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 130 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/77 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/84 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/84 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 102/186 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/186 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/192 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/192 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 14/206 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/206 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/210 variables, 2/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/213 variables, 2/105 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 09:24:44] [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 09:24:44] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/213 variables, 2/107 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/213 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/213 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 107 constraints, problems are : Problem set: 0 solved, 1 unsolved in 172 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 313ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1 ms.
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.
RANDOM walk for 40003 steps (8 resets) in 89 ms. (444 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.55993e+06 after 3.05596e+06
Interrupted probabilistic random walk after 2013204 steps, run timeout after 3001 ms. (steps per millisecond=670 ) properties seen :0 out of 1
Probabilistic random walk after 2013204 steps, saw 1290601 distinct states, run finished after 3001 ms. (steps per millisecond=670 ) properties seen :0
[2026-05-25 09:24:47] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:47] [INFO ] Invariant cache hit.
[2026-05-25 09:24:47] [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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 7/84 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/84 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 102/186 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/186 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/192 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/192 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/206 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/206 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/210 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/210 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/213 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/213 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 213/213 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 95 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 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) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/77 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/77 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/77 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/77 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/84 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/84 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/84 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 102/186 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/186 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/186 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/192 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/192 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 14/206 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/206 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/210 variables, 2/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/213 variables, 2/105 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 09:24:47] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:47] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/213 variables, 2/107 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/213 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/213 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 107 constraints, problems are : Problem set: 0 solved, 1 unsolved in 160 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 83/83 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 262ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
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 09:24:47] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:24:47] [INFO ] Implicit Places using invariants in 59 ms returned []
[2026-05-25 09:24:47] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:24:48] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:24:48] [INFO ] Implicit Places using invariants and state equation in 164 ms returned []
Implicit Place search using SMT with State Equation took 246 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:24:48] [INFO ] Redundant transitions in 0 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 09:24:48] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 09:24:48] [INFO ] Invariant cache hit.
[2026-05-25 09:24:48] [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 3765 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
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :3.05596e+06 after 6.04825e+06
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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:56] [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 09:24:56] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:56] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:56] [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 09:24:56] [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) 0/213 variables, 5/317 constraints. Problems are: Problem set: 0 solved, 208 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:02] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 8 (OVERLAPS) 0/213 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 318 constraints, problems are : Problem set: 0 solved, 208 unsolved in 22330 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: 6/6 constraints]
After SMT, in 26144ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 26145ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26397 ms. Remains : 83/83 places, 210/210 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 8 transitions
Trivial Post-agglo rules discarded 8 transitions
Performed 8 trivial Post agglomeration. Transition count delta: 8
Iterating post reduction 0 with 88 rules applied. Total rules applied 88 place count 83 transition count 122
Reduce places removed 8 places and 0 transitions.
Iterating post reduction 1 with 8 rules applied. Total rules applied 96 place count 75 transition count 122
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 96 place count 75 transition count 106
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 128 place count 59 transition count 106
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 158 place count 44 transition count 91
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 165 place count 37 transition count 77
Iterating global reduction 2 with 7 rules applied. Total rules applied 172 place count 37 transition count 77
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 179 place count 30 transition count 63
Iterating global reduction 2 with 7 rules applied. Total rules applied 186 place count 30 transition count 63
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 193 place count 23 transition count 49
Iterating global reduction 2 with 7 rules applied. Total rules applied 200 place count 23 transition count 49
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 207 place count 23 transition count 42
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 207 place count 23 transition count 41
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 209 place count 22 transition count 41
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 213 place count 20 transition count 41
Applied a total of 213 rules in 8 ms. Remains 20 /83 variables (removed 63) and now considering 41/210 (removed 169) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 41 rows 20 cols
[2026-05-25 09:25:14] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:25:14] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 09:25:14] [INFO ] After 8ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 09:25:14] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:25:14] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 09:25:14] [INFO ] After 35ms 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 09:25:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 09:25:14] [INFO ] After 9ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 09:25:14] [INFO ] After 9ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 09:25:14] [INFO ] After 12ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:25:14] [INFO ] After 39ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:25:14] [INFO ] Flatten gal took : 5 ms
[2026-05-25 09:25:14] [INFO ] Flatten gal took : 1 ms
[2026-05-25 09:25:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10825409852488816281.gal : 0 ms
[2026-05-25 09:25:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11167951293785892268.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/ReachabilityCardinality10825409852488816281.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11167951293785892268.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/ReachabilityCardinality11167951293785892268.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 60
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :60 after 900
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :900 after 4560
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :4560 after 19900
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :19900 after 81980
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :81980 after 330300
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :330300 after 1.32104e+06
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :6.04825e+06 after 1.20544e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.32104e+06 after 5.2737e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.2737e+06 after 2.10536e+07
Detected timeout of ITS tools.
[2026-05-25 09:25:29] [INFO ] Flatten gal took : 3 ms
[2026-05-25 09:25:29] [INFO ] Applying decomposition
[2026-05-25 09:25:29] [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/graph1294708671027610905.txt' '-o' '/tmp/graph1294708671027610905.bin' '-w' '/tmp/graph1294708671027610905.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1294708671027610905.bin' '-l' '-1' '-v' '-w' '/tmp/graph1294708671027610905.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:25:29] [INFO ] Decomposing Gal with order
[2026-05-25 09:25:29] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:25:29] [INFO ] Removed a total of 47 redundant transitions.
[2026-05-25 09:25:29] [INFO ] Flatten gal took : 2 ms
[2026-05-25 09:25:29] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 09:25:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9046812761568125837.gal : 3 ms
[2026-05-25 09:25:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8839078378200771737.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/ReachabilityCardinality9046812761568125837.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8839078378200771737.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/ReachabilityCardinality8839078378200771737.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 30
Detected timeout of ITS tools.
[2026-05-25 09:25:31] [INFO ] Flatten gal took : 4 ms
[2026-05-25 09:25:31] [INFO ] Applying decomposition
[2026-05-25 09:25:31] [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/graph18130965128709992885.txt' '-o' '/tmp/graph18130965128709992885.bin' '-w' '/tmp/graph18130965128709992885.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph18130965128709992885.bin' '-l' '-1' '-v' '-w' '/tmp/graph18130965128709992885.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:25:31] [INFO ] Decomposing Gal with order
[2026-05-25 09:25:31] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:25:31] [INFO ] Removed a total of 360 redundant transitions.
[2026-05-25 09:25:31] [INFO ] Flatten gal took : 9 ms
[2026-05-25 09:25:31] [INFO ] Fuse similar labels procedure discarded/fused a total of 110 labels/synchronizations in 4 ms.
[2026-05-25 09:25:31] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12346789515479302435.gal : 1 ms
[2026-05-25 09:25:31] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4321537125306089419.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/ReachabilityCardinality12346789515479302435.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4321537125306089419.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/ReachabilityCardinality4321537125306089419.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30196 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:[276] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b004-UpperBounds-13 in 179729 ms.
Starting property specific reduction for FunctionPointer-PT-b004-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 09:25:44] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
// Phase 1: matrix 181 rows 110 cols
[2026-05-25 09:25:44] [INFO ] Computed 3 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 (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[24] Max Struct:[+inf]
[2026-05-25 09:25:44] [INFO ] Flow matrix only has 181 transitions (discarded 102 similar events)
[2026-05-25 09:25:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:25:44] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:25:44] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:25:44] [INFO ] State equation strengthened by 29 read => feed constraints.
[2026-05-25 09:25:44] [INFO ] [Real]Added 29 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:25:44] [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 09:25:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:25:44] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:25:44] [INFO ] [Nat]Added 29 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:44] [INFO ] Deduced a trap composed of 17 places in 63 ms of which 6 ms to minimize.
[2026-05-25 09:25:44] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 73 ms
[2026-05-25 09:25:44] [INFO ] Computed and/alt/rep : 70/390/67 causal constraints (skipped 112 transitions) in 7 ms.
[2026-05-25 09:25:44] [INFO ] Added : 9 causal constraints over 4 iterations in 52 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[24] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[24] Max Struct:[+inf]
Support contains 1 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 283/283 transitions.
Graph (complete) has 466 edges and 110 vertex of which 107 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 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 107 transition count 278
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 100 transition count 260
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 100 transition count 260
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 26 place count 100 transition count 254
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 31 place count 95 transition count 238
Iterating global reduction 2 with 5 rules applied. Total rules applied 36 place count 95 transition count 238
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 40 place count 95 transition count 234
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 43 place count 92 transition count 228
Iterating global reduction 3 with 3 rules applied. Total rules applied 46 place count 92 transition count 228
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 49 place count 89 transition count 218
Iterating global reduction 3 with 3 rules applied. Total rules applied 52 place count 89 transition count 218
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 55 place count 86 transition count 212
Iterating global reduction 3 with 3 rules applied. Total rules applied 58 place count 86 transition count 212
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 61 place count 83 transition count 206
Iterating global reduction 3 with 3 rules applied. Total rules applied 64 place count 83 transition count 206
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 67 place count 80 transition count 200
Iterating global reduction 3 with 3 rules applied. Total rules applied 70 place count 80 transition count 200
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 72 place count 78 transition count 196
Iterating global reduction 3 with 2 rules applied. Total rules applied 74 place count 78 transition count 196
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 76 place count 76 transition count 192
Iterating global reduction 3 with 2 rules applied. Total rules applied 78 place count 76 transition count 192
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 80 place count 74 transition count 188
Iterating global reduction 3 with 2 rules applied. Total rules applied 82 place count 74 transition count 188
Applied a total of 82 rules in 13 ms. Remains 74 /110 variables (removed 36) and now considering 188/283 (removed 95) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13 ms. Remains : 74/110 places, 188/283 transitions.
[2026-05-25 09:25:44] [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 21 ms. (steps per millisecond=476 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[24] Max Struct:[+inf]
[2026-05-25 09:25:44] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
// Phase 1: matrix 115 rows 74 cols
[2026-05-25 09:25:44] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[24] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 891 ms. (1121 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 423 ms. (2358 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1767] Max Struct:[+inf]
[2026-05-25 09:25:46] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:25:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:25:46] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:25:46] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 09:25:46] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:25:46] [INFO ] [Real]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:25:46] [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 09:25:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:25:46] [INFO ] [Nat]Absence check using state equation in 19 ms returned sat
[2026-05-25 09:25:46] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:46] [INFO ] Deduced a trap composed of 14 places in 45 ms of which 5 ms to minimize.
[2026-05-25 09:25:46] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 51 ms
[2026-05-25 09:25:46] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 9 ms.
[2026-05-25 09:25:46] [INFO ] Added : 5 causal constraints over 3 iterations in 33 ms. Result :sat
Minimization took 16 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1767] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1767] 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 4 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 09:25:46] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:25:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:25:46] [INFO ] Implicit Places using invariants in 58 ms returned []
[2026-05-25 09:25:46] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:25:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:25:46] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:25:46] [INFO ] Implicit Places using invariants and state equation in 146 ms returned []
Implicit Place search using SMT with State Equation took 206 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:25:46] [INFO ] Redundant transitions in 2 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:25:46] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:25:46] [INFO ] Invariant cache hit.
[2026-05-25 09:25:46] [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
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 5973 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 09:25:55] [INFO ] Deduced a trap along path composed of 3 places in 36 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:55] [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 09:25:56] [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 09:25:56] [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 09:25:56] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 14192 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: 5/5 constraints]
After SMT, in 20206ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 20207ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20430 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:26:06] [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 21 ms. (steps per millisecond=476 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[1767] Max Struct:[+inf]
[2026-05-25 09:26:06] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:26:06] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1767] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 917 ms. (1089 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 415 ms. (2403 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1767] Max Struct:[+inf]
[2026-05-25 09:26:08] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:26:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:26:08] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:08] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 09:26:08] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:26:08] [INFO ] [Real]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:26:08] [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 09:26:08] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:08] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:26:08] [INFO ] [Nat]Added 17 Read/Feed constraints in 8 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:26:08] [INFO ] Deduced a trap composed of 14 places in 53 ms of which 6 ms to minimize.
[2026-05-25 09:26:08] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 60 ms
[2026-05-25 09:26:08] [INFO ] Computed and/alt/rep : 60/195/52 causal constraints (skipped 61 transitions) in 5 ms.
[2026-05-25 09:26:08] [INFO ] Added : 5 causal constraints over 3 iterations in 28 ms. Result :sat
Minimization took 17 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1767] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1767] 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 6 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 7 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 3 ms. Remains 74 /74 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-25 09:26:08] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:26:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:26:08] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 09:26:08] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:26:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:26:08] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:26:08] [INFO ] Implicit Places using invariants and state equation in 153 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 09:26:08] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-25 09:26:08] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:26:08] [INFO ] Invariant cache hit.
[2026-05-25 09:26:08] [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
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 6153 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 09:26:18] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:26:18] [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 09:26:18] [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 09:26:18] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:26:18] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/189 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 7 (OVERLAPS) 0/189 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 189/189 variables, and 285 constraints, problems are : Problem set: 0 solved, 186 unsolved in 14927 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: 5/5 constraints]
After SMT, in 21128ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 21128ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21365 ms. Remains : 74/74 places, 188/188 transitions.
[2026-05-25 09:26:29] [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 :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 09:26:30] [INFO ] Flow matrix only has 115 transitions (discarded 73 similar events)
[2026-05-25 09:26:30] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 900 ms. (1109 steps per ms)
FORMULA FunctionPointer-PT-b004-UpperBounds-14 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
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 09:26:30] [INFO ] Flatten gal took : 12 ms
[2026-05-25 09:26:30] [INFO ] Flatten gal took : 6 ms
[2026-05-25 09:26:30] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15040522163696027076.gal : 2 ms
[2026-05-25 09:26:30] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1890678168207639291.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/ReachabilityCardinality15040522163696027076.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1890678168207639291.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
java.io.IOException: Stream closed
at java.base/java.io.BufferedInputStream.ensureOpen(BufferedInputStream.java:206)
at java.base/java.io.BufferedInputStream.implRead(BufferedInputStream.java:411)
at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:405)
at java.base/sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:350)
at java.base/sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:393)
at java.base/sun.nio.cs.StreamDecoder.lockedRead(StreamDecoder.java:217)
at java.base/sun.nio.cs.StreamDecoder.read(StreamDecoder.java:171)
at java.base/java.io.InputStreamReader.read(InputStreamReader.java:188)
at java.base/java.io.BufferedReader.fill(BufferedReader.java:160)
at java.base/java.io.BufferedReader.implReadLine(BufferedReader.java:370)
at java.base/java.io.BufferedReader.readLine(BufferedReader.java:347)
at java.base/java.io.BufferedReader.readLine(BufferedReader.java:436)
at fr.lip6.move.gal.application.runner.its.ITSRunner$ITSInterpreter.run(ITSRunner.java:211)
at java.base/java.lang.Thread.run(Thread.java:1583)
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for FunctionPointer-PT-b004-UpperBounds-14 in 46440 ms.
[2026-05-25 09:26:30] [INFO ] Flatten gal took : 6 ms
[2026-05-25 09:26:30] [INFO ] Applying decomposition
[2026-05-25 09:26:30] [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/graph6230260908672305934.txt' '-o' '/tmp/graph6230260908672305934.bin' '-w' '/tmp/graph6230260908672305934.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph6230260908672305934.bin' '-l' '-1' '-v' '-w' '/tmp/graph6230260908672305934.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:26:30] [INFO ] Decomposing Gal with order
[2026-05-25 09:26:30] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:26:31] [INFO ] Removed a total of 480 redundant transitions.
[2026-05-25 09:26:31] [INFO ] Flatten gal took : 25 ms
[2026-05-25 09:26:31] [INFO ] Fuse similar labels procedure discarded/fused a total of 165 labels/synchronizations in 5 ms.
[2026-05-25 09:26:31] [INFO ] Time to serialize gal into /tmp/UpperBounds11925408973411658453.gal : 1 ms
[2026-05-25 09:26:31] [INFO ] Time to serialize properties into /tmp/UpperBounds10924796057477203832.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/UpperBounds11925408973411658453.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds10924796057477203832.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 ...285
Loading property file /tmp/UpperBounds10924796057477203832.prop.
Detected timeout of ITS tools.
[2026-05-25 09:53:51] [INFO ] Flatten gal took : 36 ms
[2026-05-25 09:53:51] [INFO ] Time to serialize gal into /tmp/UpperBounds5394635178209358709.gal : 21 ms
[2026-05-25 09:53:51] [INFO ] Time to serialize properties into /tmp/UpperBounds12406980221624407325.prop : 5 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/UpperBounds5394635178209358709.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds12406980221624407325.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 ...305
Loading property file /tmp/UpperBounds12406980221624407325.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-b004"
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-b004, 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-177961079700009"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/FunctionPointer-PT-b004.tgz
mv FunctionPointer-PT-b004 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 ;