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-177961079800013.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)
..............
=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is FunctionPointer-PT-b064, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r159-tall-177961079800013
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 788K
-rw-r--r-- 1 mcc users 5.9K Mar 7 07:29 CTLCardinality.txt
-rw-r--r-- 1 mcc users 60K Mar 7 07:29 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.4K Mar 7 07:29 CTLFireability.txt
-rw-r--r-- 1 mcc users 60K Mar 7 07:29 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 15 10:24 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 15 10:24 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 10:24 LTLFireability.txt
-rw-r--r-- 1 mcc users 20K Mar 15 10:24 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.1K Mar 7 07:29 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 78K Mar 7 07:29 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.2K Mar 7 07:29 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 79K Mar 7 07:29 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:24 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 10:24 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 391K Mar 3 18:30 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of positive values
NUM_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-00
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-01
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-02
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-03
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-04
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-05
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-06
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-07
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-08
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-09
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-10
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-11
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-12
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-13
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-14
FORMULA_NAME FunctionPointer-PT-b064-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779703542731

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FunctionPointer-PT-b064
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 10:05:44] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-25 10:05:44] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 10:05:44] [INFO ] Load time of PNML (sax parser for PT used): 113 ms
[2026-05-25 10:05:44] [INFO ] Transformed 306 places.
[2026-05-25 10:05:44] [INFO ] Transformed 840 transitions.
[2026-05-25 10:05:44] [INFO ] Parsed PT model containing 306 places and 840 transitions and 3392 arcs in 206 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Deduced a syphon composed of 84 places in 8 ms
Reduce places removed 84 places and 192 transitions.
FORMULA FunctionPointer-PT-b064-UpperBounds-00 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b064-UpperBounds-03 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b064-UpperBounds-04 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b064-UpperBounds-05 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b064-UpperBounds-14 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+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] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:44] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
// Phase 1: matrix 414 rows 222 cols
[2026-05-25 10:05:44] [INFO ] Computed 4 invariants in 23 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 10000 steps (5 resets) in 71 ms. (138 steps per ms)
BEST_FIRST walk for 110011 steps (53 resets) in 146 ms. (748 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 5, 8, 8, 4, 2, 17, 13, 1, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:44] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
[2026-05-25 10:05:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:44] [INFO ] [Real]Absence check using 3 positive place invariants in 6 ms returned sat
[2026-05-25 10:05:44] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Real]Absence check using state equation in 114 ms returned sat
[2026-05-25 10:05:45] [INFO ] State equation strengthened by 65 read => feed constraints.
[2026-05-25 10:05:45] [INFO ] [Real]Added 65 Read/Feed constraints in 23 ms returned sat
[2026-05-25 10:05:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:45] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Nat]Absence check using state equation in 88 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:05:45] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 69 ms.
[2026-05-25 10:05:45] [INFO ] Added : 2 causal constraints over 1 iterations in 140 ms. Result :sat
Minimization took 91 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:45] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Real]Absence check using state equation in 134 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Real]Added 65 Read/Feed constraints in 19 ms returned sat
[2026-05-25 10:05:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:45] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:45] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Nat]Absence check using state equation in 88 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Nat]Added 65 Read/Feed constraints in 33 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:46] [INFO ] Deduced a trap composed of 21 places in 145 ms of which 7 ms to minimize.
[2026-05-25 10:05:46] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 175 ms
[2026-05-25 10:05:46] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 46 ms.
[2026-05-25 10:05:46] [INFO ] Added : 2 causal constraints over 1 iterations in 99 ms. Result :sat
Minimization took 91 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:46] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Real]Absence check using state equation in 73 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Real]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:05:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Nat]Absence check using state equation in 76 ms returned sat
[2026-05-25 10:05:46] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:46] [INFO ] Deduced a trap composed of 21 places in 128 ms of which 5 ms to minimize.
[2026-05-25 10:05:46] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 160 ms
[2026-05-25 10:05:46] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 43 ms.
[2026-05-25 10:05:47] [INFO ] Added : 2 causal constraints over 1 iterations in 96 ms. Result :sat
Minimization took 104 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:47] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:47] [INFO ] [Real]Absence check using state equation in 83 ms returned sat
[2026-05-25 10:05:47] [INFO ] [Real]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:05:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:47] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:47] [INFO ] [Nat]Absence check using state equation in 78 ms returned sat
[2026-05-25 10:05:47] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:47] [INFO ] Deduced a trap composed of 21 places in 111 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:47] [INFO ] Deduced a trap composed of 21 places in 93 ms of which 5 ms to minimize.
[2026-05-25 10:05:47] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 237 ms
[2026-05-25 10:05:47] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 46 ms.
[2026-05-25 10:05:47] [INFO ] Added : 2 causal constraints over 1 iterations in 102 ms. Result :sat
Minimization took 94 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:47] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:47] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Real]Absence check using state equation in 84 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Real]Added 65 Read/Feed constraints in 15 ms returned sat
[2026-05-25 10:05:48] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Nat]Absence check using state equation in 77 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:05:48] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 81 ms.
[2026-05-25 10:05:48] [INFO ] Added : 2 causal constraints over 1 iterations in 130 ms. Result :sat
Minimization took 85 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:48] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Real]Absence check using state equation in 71 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:48] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Nat]Absence check using state equation in 68 ms returned sat
[2026-05-25 10:05:48] [INFO ] [Nat]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:48] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 31 ms.
[2026-05-25 10:05:48] [INFO ] Added : 2 causal constraints over 1 iterations in 72 ms. Result :sat
Minimization took 89 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:49] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Real]Absence check using state equation in 71 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Nat]Absence check using state equation in 69 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Nat]Added 65 Read/Feed constraints in 8 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:49] [INFO ] Deduced a trap composed of 21 places in 112 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:49] [INFO ] Deduced a trap composed of 21 places in 95 ms of which 5 ms to minimize.
[2026-05-25 10:05:49] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 243 ms
[2026-05-25 10:05:49] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 26 ms.
[2026-05-25 10:05:49] [INFO ] Added : 2 causal constraints over 1 iterations in 77 ms. Result :sat
Minimization took 80 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:49] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Real]Absence check using state equation in 91 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Real]Added 65 Read/Feed constraints in 12 ms returned sat
[2026-05-25 10:05:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Nat]Absence check using state equation in 76 ms returned sat
[2026-05-25 10:05:49] [INFO ] [Nat]Added 65 Read/Feed constraints in 21 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:50] [INFO ] Deduced a trap composed of 21 places in 109 ms of which 5 ms to minimize.
[2026-05-25 10:05:50] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 143 ms
[2026-05-25 10:05:50] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 29 ms.
[2026-05-25 10:05:50] [INFO ] Added : 2 causal constraints over 1 iterations in 73 ms. Result :sat
Minimization took 89 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:50] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Real]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Real]Added 65 Read/Feed constraints in 12 ms returned sat
[2026-05-25 10:05:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Nat]Absence check using state equation in 74 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:50] [INFO ] Deduced a trap composed of 21 places in 218 ms of which 13 ms to minimize.
[2026-05-25 10:05:50] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 257 ms
[2026-05-25 10:05:51] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 52 ms.
[2026-05-25 10:05:51] [INFO ] Added : 2 causal constraints over 1 iterations in 105 ms. Result :sat
Minimization took 104 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:51] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Real]Absence check using state equation in 69 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Real]Added 65 Read/Feed constraints in 11 ms returned sat
[2026-05-25 10:05:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Nat]Absence check using state equation in 79 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Nat]Added 65 Read/Feed constraints in 17 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:51] [INFO ] Deduced a trap composed of 21 places in 126 ms of which 7 ms to minimize.
[2026-05-25 10:05:51] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 163 ms
[2026-05-25 10:05:51] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 22 ms.
[2026-05-25 10:05:51] [INFO ] Added : 2 causal constraints over 1 iterations in 97 ms. Result :sat
Minimization took 85 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:51] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Real]Absence check using state equation in 68 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Real]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:05:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 5 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Absence check using state equation in 81 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:05:52] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 23 ms.
[2026-05-25 10:05:52] [INFO ] Added : 2 causal constraints over 1 iterations in 62 ms. Result :sat
Minimization took 77 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1, 5, 8, 8, 4, 2, 17, 13, 1, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 63, 8, 8, 4, 2, 63, 63, 1, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 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 200 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.3 ms
Discarding 22 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 27 transitions
Reduce isomorphic transitions removed 27 transitions.
Iterating post reduction 0 with 27 rules applied. Total rules applied 28 place count 200 transition count 621
Discarding 28 places :
Symmetric choice reduction at 1 with 28 rule applications. Total rules 56 place count 172 transition count 461
Iterating global reduction 1 with 28 rules applied. Total rules applied 84 place count 172 transition count 461
Ensure Unique test removed 30 transitions
Reduce isomorphic transitions removed 30 transitions.
Iterating post reduction 1 with 30 rules applied. Total rules applied 114 place count 172 transition count 431
Discarding 14 places :
Symmetric choice reduction at 2 with 14 rule applications. Total rules 128 place count 158 transition count 403
Iterating global reduction 2 with 14 rules applied. Total rules applied 142 place count 158 transition count 403
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 146 place count 158 transition count 399
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 152 place count 152 transition count 387
Iterating global reduction 3 with 6 rules applied. Total rules applied 158 place count 152 transition count 387
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 164 place count 146 transition count 363
Iterating global reduction 3 with 6 rules applied. Total rules applied 170 place count 146 transition count 363
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 176 place count 140 transition count 351
Iterating global reduction 3 with 6 rules applied. Total rules applied 182 place count 140 transition count 351
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 186 place count 136 transition count 335
Iterating global reduction 3 with 4 rules applied. Total rules applied 190 place count 136 transition count 335
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 194 place count 132 transition count 319
Iterating global reduction 3 with 4 rules applied. Total rules applied 198 place count 132 transition count 319
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 202 place count 128 transition count 311
Iterating global reduction 3 with 4 rules applied. Total rules applied 206 place count 128 transition count 311
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 210 place count 124 transition count 303
Iterating global reduction 3 with 4 rules applied. Total rules applied 214 place count 124 transition count 303
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 218 place count 120 transition count 295
Iterating global reduction 3 with 4 rules applied. Total rules applied 222 place count 120 transition count 295
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 226 place count 116 transition count 287
Iterating global reduction 3 with 4 rules applied. Total rules applied 230 place count 116 transition count 287
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 234 place count 112 transition count 279
Iterating global reduction 3 with 4 rules applied. Total rules applied 238 place count 112 transition count 279
Drop transitions (Redundant composition of simpler transitions.) removed 8 transitions
Redundant transition composition rules discarded 8 transitions
Iterating global reduction 3 with 8 rules applied. Total rules applied 246 place count 112 transition count 271
Applied a total of 246 rules in 232 ms. Remains 112 /222 variables (removed 110) and now considering 271/648 (removed 377) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 243 ms. Remains : 112/222 places, 271/648 transitions.
[2026-05-25 10:05:53] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 8 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 21 resets, run finished after 90 ms. (steps per millisecond=111 ) properties (out of 11) seen :[1, 10, 11, 6, 3, 4, 4, 5, 1, 3, 1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1, 63, 11, 8, 4, 4, 63, 63, 1, 3, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:53] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:05:53] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1, 63, 11, 8, 4, 4, 63, 63, 1, 3, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000043 steps (2 resets) in 660 ms. (1512 steps per ms)
BEST_FIRST walk for 11000011 steps (618 resets) in 9705 ms. (1133 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[18, 87, 69, 24, 25, 10, 63, 63, 22, 35, 18] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:03] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:03] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:03] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:03] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:03] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:06:03] [INFO ] [Real]Added 36 Read/Feed constraints in 15 ms returned sat
[2026-05-25 10:06:03] [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 10:06:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 26 ms.
[2026-05-25 10:06:04] [INFO ] Added : 14 causal constraints over 4 iterations in 86 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:04] [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 10:06:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 18 ms.
[2026-05-25 10:06:04] [INFO ] Added : 2 causal constraints over 1 iterations in 42 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:04] [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 10:06:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 12 ms.
[2026-05-25 10:06:04] [INFO ] Added : 2 causal constraints over 1 iterations in 46 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using state equation in 49 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:04] [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 10:06:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:06:04] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:05] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:06:05] [INFO ] Added : 5 causal constraints over 3 iterations in 62 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:05] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:06:05] [INFO ] Added : 4 causal constraints over 2 iterations in 39 ms. Result :sat
Minimization took 55 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:05] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 14 ms.
[2026-05-25 10:06:05] [INFO ] Added : 2 causal constraints over 1 iterations in 48 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:06] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 15 ms.
[2026-05-25 10:06:06] [INFO ] Added : 2 causal constraints over 1 iterations in 40 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 1 positive place invariants in 3 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Added 36 Read/Feed constraints in 21 ms returned sat
[2026-05-25 10:06:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:06] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 26 ms.
[2026-05-25 10:06:06] [INFO ] Added : 14 causal constraints over 4 iterations in 75 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:06] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 14 ms.
[2026-05-25 10:06:06] [INFO ] Added : 5 causal constraints over 3 iterations in 71 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:06] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:06:06] [INFO ] Added : 5 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[18, 87, 69, 24, 25, 10, 63, 63, 22, 35, 18] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[18, 87, 69, 63, 25, 62, 63, 63, 22, 35, 18] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 8 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 12 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:06:07] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:07] [INFO ] Implicit Places using invariants in 142 ms returned []
[2026-05-25 10:06:07] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:07] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:06:07] [INFO ] Implicit Places using invariants and state equation in 221 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 10:06:07] [INFO ] Redundant transitions in 11 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:06:07] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:07] [INFO ] Invariant cache hit.
[2026-05-25 10:06:07] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 6949 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 18334 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 25460ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 25468ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25881 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:06:33] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 19 resets, run finished after 118 ms. (steps per millisecond=84 ) properties (out of 11) seen :[1, 12, 6, 8, 3, 4, 3, 5, 1, 2, 2]
Current structural bounds on expressions (after cover walk) : Max Seen:[18, 87, 69, 63, 25, 62, 63, 63, 22, 35, 18] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:33] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:33] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[18, 87, 69, 63, 25, 62, 63, 63, 22, 35, 18] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 871 ms. (1146 steps per ms)
BEST_FIRST walk for 11000011 steps (494 resets) in 10284 ms. (1069 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[18, 94, 69, 63, 27, 62, 63, 79, 138, 35, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:44] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:06:44] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:06:44] [INFO ] [Real]Added 36 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:06:44] [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 10:06:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:44] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:06:44] [INFO ] Added : 14 causal constraints over 4 iterations in 53 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:44] [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 10:06:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:44] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:44] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:06:45] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Added 36 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:06:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:06:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:06:45] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 12 ms returned sat
[2026-05-25 10:06:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 11 ms.
[2026-05-25 10:06:45] [INFO ] Added : 2 causal constraints over 1 iterations in 29 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:06:45] [INFO ] Added : 5 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 10:06:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 13 ms returned sat
[2026-05-25 10:06:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:06:46] [INFO ] Added : 3 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:46] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:06:46] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:46] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:06:46] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:46] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:06:46] [INFO ] Added : 7 causal constraints over 3 iterations in 45 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:46] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:46] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:06:46] [INFO ] Added : 5 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:47] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:47] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:47] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 11 ms.
[2026-05-25 10:06:47] [INFO ] Added : 5 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[18, 94, 69, 63, 27, 62, 63, 79, 138, 35, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[58, 94, 69, 63, 27, 62, 63, 79, 138, 35, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 8 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 12 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:06:47] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:47] [INFO ] Implicit Places using invariants in 85 ms returned []
[2026-05-25 10:06:47] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:47] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:06:48] [INFO ] Implicit Places using invariants and state equation in 196 ms returned []
Implicit Place search using SMT with State Equation took 281 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:06:48] [INFO ] Redundant transitions in 8 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:06:48] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:06:48] [INFO ] Invariant cache hit.
[2026-05-25 10:06:48] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 6864 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 18057 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 25040ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 25041ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25347 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:07:13] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 17 resets, run finished after 42 ms. (steps per millisecond=238 ) properties (out of 11) seen :[2, 5, 7, 8, 2, 6, 9, 5, 2, 2, 2]
Current structural bounds on expressions (after cover walk) : Max Seen:[58, 94, 69, 63, 27, 62, 63, 79, 138, 35, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:13] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:07:13] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[58, 94, 69, 63, 27, 62, 63, 79, 138, 35, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (3 resets) in 1072 ms. (931 steps per ms)
BEST_FIRST walk for 11000011 steps (563 resets) in 9933 ms. (1107 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[58, 94, 75, 63, 27, 62, 63, 79, 138, 43, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:24] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:07:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:07:24] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:07:24] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:24] [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 10:07:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Added 36 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:07:24] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:07:24] [INFO ] Added : 14 causal constraints over 4 iterations in 51 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:07:24] [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 10:07:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:07:24] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:07:24] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:24] [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 10:07:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:07:24] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:07:24] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:07:25] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:07:25] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:25] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:07:25] [INFO ] Added : 5 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:07:25] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:07:25] [INFO ] Added : 3 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:07:25] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Added 36 Read/Feed constraints in 16 ms returned sat
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 11 ms.
[2026-05-25 10:07:25] [INFO ] Added : 2 causal constraints over 1 iterations in 31 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:25] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:07:26] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:07:26] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:26] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:07:26] [INFO ] Added : 7 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:26] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:07:26] [INFO ] Added : 5 causal constraints over 3 iterations in 55 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:26] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:07:26] [INFO ] Added : 5 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[58, 94, 75, 63, 27, 62, 63, 79, 138, 43, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[58, 94, 75, 63, 27, 62, 63, 79, 138, 43, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 6 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 6 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:07:27] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:07:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:27] [INFO ] Implicit Places using invariants in 85 ms returned []
[2026-05-25 10:07:27] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:07:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:27] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:07:27] [INFO ] Implicit Places using invariants and state equation in 198 ms returned []
Implicit Place search using SMT with State Equation took 285 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:07:27] [INFO ] Redundant transitions in 6 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:07:27] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:07:27] [INFO ] Invariant cache hit.
[2026-05-25 10:07:27] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 6921 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 17820 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 24834ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 24836ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25147 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:07:52] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 15 resets, run finished after 47 ms. (steps per millisecond=212 ) properties (out of 11) seen :[3, 9, 7, 3, 2, 7, 5, 6, 3, 3, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[58, 94, 75, 63, 27, 62, 63, 79, 138, 43, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:52] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:07:52] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[58, 94, 75, 63, 27, 62, 63, 79, 138, 43, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1282 ms. (779 steps per ms)
BEST_FIRST walk for 11000011 steps (480 resets) in 9778 ms. (1124 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:03] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:03] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:03] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:03] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:03] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:08:03] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:03] [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 10:08:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:03] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:08:04] [INFO ] Added : 14 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:04] [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 10:08:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:08:04] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:04] [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 10:08:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:08:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 12 ms.
[2026-05-25 10:08:04] [INFO ] Added : 2 causal constraints over 1 iterations in 31 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:04] [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 10:08:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:08:04] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:04] [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 10:08:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:08:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:08:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:08:05] [INFO ] Added : 9 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using state equation in 42 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:05] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:08:05] [INFO ] Added : 3 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:05] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:08:05] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:05] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 7 ms.
[2026-05-25 10:08:05] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:05] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:05] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:08:05] [INFO ] Added : 7 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:06] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Nat]Absence check using state equation in 53 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Nat]Added 36 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:08:06] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 12 ms.
[2026-05-25 10:08:06] [INFO ] Added : 5 causal constraints over 3 iterations in 47 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:06] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:06] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:06] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 7 ms.
[2026-05-25 10:08:06] [INFO ] Added : 5 causal constraints over 3 iterations in 53 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 6 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:08:07] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:07] [INFO ] Implicit Places using invariants in 85 ms returned []
[2026-05-25 10:08:07] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:07] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:08:07] [INFO ] Implicit Places using invariants and state equation in 192 ms returned []
Implicit Place search using SMT with State Equation took 277 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:08:07] [INFO ] Redundant transitions in 2 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:08:07] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:07] [INFO ] Invariant cache hit.
[2026-05-25 10:08:07] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 6941 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 17992 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 25024ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 25025ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25319 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:08:32] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 12 resets, run finished after 45 ms. (steps per millisecond=222 ) properties (out of 11) seen :[3, 14, 6, 4, 2, 6, 7, 7, 2, 6, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:32] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:32] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 26] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000026 steps (2 resets) in 998 ms. (1001 steps per ms)
BEST_FIRST walk for 11000011 steps (549 resets) in 9503 ms. (1157 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:43] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using state equation in 50 ms returned sat
[2026-05-25 10:08:43] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:08:43] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Added 36 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:08:43] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:08:43] [INFO ] Added : 14 causal constraints over 4 iterations in 58 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:43] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:08:43] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:43] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 7 ms.
[2026-05-25 10:08:43] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using state equation in 44 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:44] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:08:44] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:44] [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 10:08:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:44] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:08:44] [INFO ] Added : 9 causal constraints over 3 iterations in 45 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:44] [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 10:08:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:44] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:08:44] [INFO ] Added : 3 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:44] [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 10:08:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Added 36 Read/Feed constraints in 13 ms returned sat
[2026-05-25 10:08:44] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:08:44] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:08:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 14 ms.
[2026-05-25 10:08:45] [INFO ] Added : 2 causal constraints over 1 iterations in 34 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:08:45] [INFO ] Added : 7 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:08:45] [INFO ] Added : 5 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 7 ms.
[2026-05-25 10:08:45] [INFO ] Added : 5 causal constraints over 3 iterations in 39 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:08:46] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:46] [INFO ] Implicit Places using invariants in 77 ms returned []
[2026-05-25 10:08:46] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:46] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:08:46] [INFO ] Implicit Places using invariants and state equation in 193 ms returned []
Implicit Place search using SMT with State Equation took 272 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:08:46] [INFO ] Redundant transitions in 2 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:08:46] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:08:46] [INFO ] Invariant cache hit.
[2026-05-25 10:08:46] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 7008 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 17496 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 24587ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 24588ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 24876 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:09:11] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 19 resets, run finished after 58 ms. (steps per millisecond=172 ) properties (out of 11) seen :[1, 10, 7, 7, 2, 4, 4, 6, 1, 3, 2]
Current structural bounds on expressions (after cover walk) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:11] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:09:11] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 53, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000002 steps (2 resets) in 886 ms. (1127 steps per ms)
BEST_FIRST walk for 11000011 steps (501 resets) in 9561 ms. (1150 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 343, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:21] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:09:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:21] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:21] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:22] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:09:22] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Added 36 Read/Feed constraints in 19 ms returned sat
[2026-05-25 10:09:22] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 13 ms.
[2026-05-25 10:09:22] [INFO ] Added : 14 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:09:22] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:09:22] [INFO ] Added : 2 causal constraints over 1 iterations in 29 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:09:22] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 32 ms.
[2026-05-25 10:09:22] [INFO ] Added : 2 causal constraints over 1 iterations in 67 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:22] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:22] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:22] [INFO ] Added : 2 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:09:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Added 36 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:09:23] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:23] [INFO ] Added : 9 causal constraints over 3 iterations in 47 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using state equation in 55 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:23] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:23] [INFO ] Added : 3 causal constraints over 2 iterations in 35 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:09:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:09:23] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:23] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:09:23] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:09:23] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:23] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:24] [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 10:09:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:24] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:24] [INFO ] Added : 7 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:24] [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 10:09:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:24] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:24] [INFO ] Added : 5 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:24] [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 10:09:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:09:24] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:24] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:09:24] [INFO ] Added : 5 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 343, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 343, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 4 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:09:25] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:09:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:25] [INFO ] Implicit Places using invariants in 111 ms returned []
[2026-05-25 10:09:25] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:09:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:25] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:09:25] [INFO ] Implicit Places using invariants and state equation in 254 ms returned []
Implicit Place search using SMT with State Equation took 388 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:09:25] [INFO ] Redundant transitions in 1 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:09:25] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:09:25] [INFO ] Invariant cache hit.
[2026-05-25 10:09:25] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 6941 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 17441 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 24452ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 24453ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 24857 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:09:50] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 6 resets, run finished after 55 ms. (steps per millisecond=181 ) properties (out of 11) seen :[5, 11, 10, 3, 3, 9, 4, 15, 3, 14, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 343, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:50] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:09:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[58, 94, 75, 63, 110, 62, 63, 79, 169, 343, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 764 ms. (1307 steps per ms)
BEST_FIRST walk for 11000011 steps (534 resets) in 10395 ms. (1058 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[97, 94, 84, 63, 110, 62, 63, 79, 169, 663, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:01] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:01] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:01] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:10:01] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:01] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:01] [INFO ] Added : 14 causal constraints over 4 iterations in 54 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:01] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:01] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:02] [INFO ] Added : 2 causal constraints over 1 iterations in 29 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:02] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:02] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using state equation in 38 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:02] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:02] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:02] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:02] [INFO ] Added : 9 causal constraints over 3 iterations in 48 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:02] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:02] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 7 ms.
[2026-05-25 10:10:02] [INFO ] Added : 3 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:03] [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 10:10:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:03] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:03] [INFO ] Added : 2 causal constraints over 1 iterations in 29 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:03] [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 10:10:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:03] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:03] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:03] [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 10:10:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:03] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:03] [INFO ] Added : 7 causal constraints over 3 iterations in 53 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:03] [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 10:10:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:03] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:03] [INFO ] Added : 5 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:03] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:04] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:04] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:04] [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 10:10:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:04] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:04] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:04] [INFO ] [Nat]Added 36 Read/Feed constraints in 13 ms returned sat
[2026-05-25 10:10:04] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:10:04] [INFO ] Added : 5 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[97, 94, 84, 63, 110, 62, 63, 79, 169, 663, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[97, 94, 84, 63, 110, 62, 63, 79, 169, 663, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
Support contains 11 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 6 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:10:05] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:05] [INFO ] Implicit Places using invariants in 80 ms returned []
[2026-05-25 10:10:05] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:05] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:10:05] [INFO ] Implicit Places using invariants and state equation in 189 ms returned []
Implicit Place search using SMT with State Equation took 271 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:10:05] [INFO ] Redundant transitions in 1 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:10:05] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:05] [INFO ] Invariant cache hit.
[2026-05-25 10:10:05] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 6696 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 18177 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 24951ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 24952ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25239 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:10:30] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 15 resets, run finished after 69 ms. (steps per millisecond=144 ) properties (out of 11) seen :[2, 9, 6, 3, 2, 4, 6, 7, 2, 5, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[97, 94, 84, 63, 110, 62, 63, 79, 169, 663, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:30] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:30] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[97, 94, 84, 63, 110, 62, 63, 79, 169, 663, 35] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (3 resets) in 1235 ms. (809 steps per ms)
FORMULA FunctionPointer-PT-b064-UpperBounds-10 64 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 10000009 steps (429 resets) in 9243 ms. (1081 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 104] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:40] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:40] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:40] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:40] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:10:40] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:41] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:41] [INFO ] Added : 14 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using state equation in 42 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:41] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:41] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:41] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:41] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:41] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:41] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Absence check using state equation in 41 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Real]Added 36 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:10:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:10:41] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:41] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:42] [INFO ] Added : 9 causal constraints over 3 iterations in 50 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Added 36 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:10:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:42] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:42] [INFO ] Added : 3 causal constraints over 2 iterations in 38 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Added 36 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:10:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Added 36 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:10:42] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:10:42] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:42] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:42] [INFO ] Added : 7 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:42] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:42] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:43] [INFO ] Added : 5 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:43] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:43] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:43] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:43] [INFO ] Added : 5 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 104] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 104] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
Support contains 10 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 6 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:10:44] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 17 resets, run finished after 66 ms. (steps per millisecond=151 ) properties (out of 10) seen :[2, 11, 8, 4, 4, 4, 10, 2, 5, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 104] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:44] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 104] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 873 ms. (1144 steps per ms)
BEST_FIRST walk for 10000010 steps (425 resets) in 9853 ms. (1014 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:54] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:54] [INFO ] [Real]Absence check using state equation in 51 ms returned sat
[2026-05-25 10:10:54] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:10:55] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:55] [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 10:10:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:55] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:10:55] [INFO ] Added : 14 causal constraints over 4 iterations in 58 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:55] [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 10:10:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:55] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:55] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:55] [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 10:10:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:55] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:55] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:55] [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 10:10:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:55] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:55] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:55] [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 10:10:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:56] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:56] [INFO ] Added : 9 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using state equation in 43 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:56] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 7 ms.
[2026-05-25 10:10:56] [INFO ] Added : 3 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:10:56] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:56] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:56] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:56] [INFO ] Added : 7 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:56] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:57] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:10:57] [INFO ] Added : 5 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:57] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:57] [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 10:10:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:57] [INFO ] [Nat]Added 36 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:10:57] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:10:57] [INFO ] Added : 5 causal constraints over 3 iterations in 56 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
Support contains 10 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 7 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:10:58] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:58] [INFO ] Implicit Places using invariants in 91 ms returned []
[2026-05-25 10:10:58] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:58] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:10:58] [INFO ] Implicit Places using invariants and state equation in 194 ms returned []
Implicit Place search using SMT with State Equation took 287 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:10:58] [INFO ] Redundant transitions in 1 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:10:58] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:10:58] [INFO ] Invariant cache hit.
[2026-05-25 10:10:58] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 6795 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 18007 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 24874ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 24875ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25179 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:11:23] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 19 resets, run finished after 42 ms. (steps per millisecond=238 ) properties (out of 10) seen :[2, 6, 6, 5, 3, 3, 7, 1, 2, 2]
Current structural bounds on expressions (after cover walk) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:11:23] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:11:23] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 1000002 steps (2 resets) in 1236 ms. (808 steps per ms)
BEST_FIRST walk for 10000009 steps (456 resets) in 9414 ms. (1062 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
[2026-05-25 10:11:34] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:11:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:34] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:11:34] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:34] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:11:34] [INFO ] Added : 14 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:11:34] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:11:34] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:11:34] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 12 ms.
[2026-05-25 10:11:34] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:11:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:34] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:34] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:11:34] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:11:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:11:35] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:11:35] [INFO ] Added : 9 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:11:35] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:11:35] [INFO ] Added : 3 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Added 36 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:11:35] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:11:35] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:11:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:35] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:11:35] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:11:35] [INFO ] Added : 7 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:36] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:11:36] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:36] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:11:36] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:11:36] [INFO ] Added : 5 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:36] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:36] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:11:36] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 10:11:36] [INFO ] [Nat]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:11:36] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:11:36] [INFO ] Added : 5 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
Support contains 10 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 6 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:11:37] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:11:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:37] [INFO ] Implicit Places using invariants in 94 ms returned []
[2026-05-25 10:11:37] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:11:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:37] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:11:37] [INFO ] Implicit Places using invariants and state equation in 194 ms returned []
Implicit Place search using SMT with State Equation took 288 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:11:37] [INFO ] Redundant transitions in 1 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:11:37] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:11:37] [INFO ] Invariant cache hit.
[2026-05-25 10:11:37] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 7022 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 18270 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 25371ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 25373ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25678 ms. Remains : 112/112 places, 271/271 transitions.
[2026-05-25 10:12:02] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {33=1, 84=1, 138=1, 175=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {33=1, 84=1, 122=1, 165=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 6 resets, run finished after 46 ms. (steps per millisecond=217 ) properties (out of 10) seen :[3, 8, 6, 2, 5, 6, 7, 2, 5, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
RANDOM walk for 40015 steps (8 resets) in 1254 ms. (31 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 189 ms. (210 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 172 ms. (231 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 129 ms. (307 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 134 ms. (296 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 114 ms. (347 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 121 ms. (327 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (8 resets) in 122 ms. (325 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 92 ms. (430 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (10 resets) in 81 ms. (487 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (10 resets) in 114 ms. (347 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 102 ms. (388 steps per ms) remains 11/11 properties
[2026-05-25 10:12:04] [INFO ] Flatten gal took : 78 ms
[2026-05-25 10:12:04] [INFO ] Flatten gal took : 30 ms
[2026-05-25 10:12:04] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3972643195555169818.gal : 11 ms
[2026-05-25 10:12:04] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15229940205867662854.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/ReachabilityCardinality3972643195555169818.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15229940205867662854.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/ReachabilityCardinality15229940205867662854.prop.
SDD proceeding with computation,11 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,11 properties remain. new max is 8
SDD size :31 after 1063
SDD proceeding with computation,11 properties remain. new max is 16
SDD size :1063 after 200511
Interrupted probabilistic random walk after 199617 steps, run timeout after 3001 ms. (steps per millisecond=66 ) properties seen :0 out of 11
Probabilistic random walk after 199617 steps, saw 127766 distinct states, run finished after 3009 ms. (steps per millisecond=66 ) properties seen :0
[2026-05-25 10:12:07] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:12:07] [INFO ] Invariant cache hit.
[2026-05-25 10:12:07] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 47/57 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/57 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 108/165 variables, 57/58 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/165 variables, 6/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/165 variables, 0/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 6 (OVERLAPS) 69/234 variables, 20/84 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/234 variables, 25/109 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/234 variables, 0/109 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 9 (OVERLAPS) 9/243 variables, 1/110 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/243 variables, 1/111 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/243 variables, 0/111 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 12 (OVERLAPS) 43/286 variables, 29/140 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/286 variables, 5/145 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/286 variables, 0/145 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 15 (OVERLAPS) 5/291 variables, 5/150 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 17 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 11 unsolved in 852 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 11 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, 11 unsolved
At refinement iteration 1 (OVERLAPS) 47/57 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/57 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 108/165 variables, 57/58 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/165 variables, 6/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/165 variables, 0/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 6 (OVERLAPS) 69/234 variables, 20/84 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/234 variables, 25/109 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/234 variables, 11/120 constraints. Problems are: Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:08] [INFO ] Deduced a trap along path composed of 3 places in 54 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:08] [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 10:12:08] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 0 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/234 variables, 3/123 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/234 variables, 0/123 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 11 (OVERLAPS) 9/243 variables, 1/124 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/243 variables, 1/125 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/243 variables, 0/125 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 14 (OVERLAPS) 43/286 variables, 29/154 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/286 variables, 5/159 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/286 variables, 0/159 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 17 (OVERLAPS) 5/291 variables, 5/164 constraints. Problems are: Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:08] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:08] [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 10:12:09] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:09] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
At refinement iteration 18 (INCLUDED_ONLY) 0/291 variables, 4/168 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/291 variables, 0/168 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 20 (OVERLAPS) 0/291 variables, 0/168 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 168 constraints, problems are : Problem set: 0 solved, 11 unsolved in 1699 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 7/7 constraints]
After SMT, in 2559ms problems are : Problem set: 0 solved, 11 unsolved
Fused 11 Parikh solutions to 10 different solutions.
SDD proceeding with computation,11 properties remain. new max is 32
SDD size :200511 after 8.74799e+08
Parikh walk visited 0 properties in 35999 ms.
Support contains 10 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 10 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 112/112 places, 271/271 transitions.
RANDOM walk for 40001 steps (9 resets) in 166 ms. (239 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 81 ms. (487 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 78 ms. (506 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 70 ms. (563 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 84 ms. (470 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 75 ms. (526 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (9 resets) in 72 ms. (547 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 75 ms. (526 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (10 resets) in 85 ms. (465 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (12 resets) in 80 ms. (493 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (10 resets) in 65 ms. (606 steps per ms) remains 11/11 properties
Interrupted probabilistic random walk after 217615 steps, run timeout after 3001 ms. (steps per millisecond=72 ) properties seen :0 out of 11
Probabilistic random walk after 217615 steps, saw 138970 distinct states, run finished after 3001 ms. (steps per millisecond=72 ) properties seen :0
[2026-05-25 10:12:48] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:12:48] [INFO ] Invariant cache hit.
[2026-05-25 10:12:48] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 47/57 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/57 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 108/165 variables, 57/58 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/165 variables, 6/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/165 variables, 0/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 6 (OVERLAPS) 69/234 variables, 20/84 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/234 variables, 25/109 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/234 variables, 0/109 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 9 (OVERLAPS) 9/243 variables, 1/110 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/243 variables, 1/111 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/243 variables, 0/111 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 12 (OVERLAPS) 43/286 variables, 29/140 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/286 variables, 5/145 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/286 variables, 0/145 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 15 (OVERLAPS) 5/291 variables, 5/150 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 17 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 11 unsolved in 565 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 47/57 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/57 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 108/165 variables, 57/58 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/165 variables, 6/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/165 variables, 0/64 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 6 (OVERLAPS) 69/234 variables, 20/84 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/234 variables, 25/109 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/234 variables, 11/120 constraints. Problems are: Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:49] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:49] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:49] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/234 variables, 3/123 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/234 variables, 0/123 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 11 (OVERLAPS) 9/243 variables, 1/124 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/243 variables, 1/125 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/243 variables, 0/125 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 14 (OVERLAPS) 43/286 variables, 29/154 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/286 variables, 5/159 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/286 variables, 0/159 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 17 (OVERLAPS) 5/291 variables, 5/164 constraints. Problems are: Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:50] [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 10:12:50] [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 10:12:50] [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 10:12:50] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 5 ms to minimize.
At refinement iteration 18 (INCLUDED_ONLY) 0/291 variables, 4/168 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/291 variables, 0/168 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 20 (OVERLAPS) 0/291 variables, 0/168 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 168 constraints, problems are : Problem set: 0 solved, 11 unsolved in 1555 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 7/7 constraints]
After SMT, in 2126ms problems are : Problem set: 0 solved, 11 unsolved
Fused 11 Parikh solutions to 10 different solutions.
Detected timeout of ITS tools.
[2026-05-25 10:12:54] [INFO ] Flatten gal took : 29 ms
[2026-05-25 10:12:54] [INFO ] Applying decomposition
[2026-05-25 10:12:54] [INFO ] Flatten gal took : 24 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/graph3140404981608968280.txt' '-o' '/tmp/graph3140404981608968280.bin' '-w' '/tmp/graph3140404981608968280.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph3140404981608968280.bin' '-l' '-1' '-v' '-w' '/tmp/graph3140404981608968280.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:12:54] [INFO ] Decomposing Gal with order
[2026-05-25 10:12:54] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:12:54] [INFO ] Removed a total of 460 redundant transitions.
[2026-05-25 10:12:54] [INFO ] Flatten gal took : 81 ms
[2026-05-25 10:12:54] [INFO ] Fuse similar labels procedure discarded/fused a total of 139 labels/synchronizations in 22 ms.
[2026-05-25 10:12:54] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12004057129481874578.gal : 5 ms
[2026-05-25 10:12:54] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18344297709091869042.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/ReachabilityCardinality12004057129481874578.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18344297709091869042.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/ReachabilityCardinality18344297709091869042.prop.
Parikh walk visited 0 properties in 36844 ms.
Support contains 10 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 112/112 places, 271/271 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Applied a total of 0 rules in 5 ms. Remains 112 /112 variables (removed 0) and now considering 271/271 (removed 0) transitions.
[2026-05-25 10:13:27] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:13:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:27] [INFO ] Implicit Places using invariants in 79 ms returned []
[2026-05-25 10:13:27] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:13:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:27] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:13:28] [INFO ] Implicit Places using invariants and state equation in 213 ms returned []
Implicit Place search using SMT with State Equation took 296 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:13:28] [INFO ] Redundant transitions in 2 ms returned []
Running 269 sub problems to find dead transitions.
[2026-05-25 10:13:28] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:13:28] [INFO ] Invariant cache hit.
[2026-05-25 10:13:28] [INFO ] State equation strengthened by 36 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/291 variables, 0/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Real declared 291/291 variables, and 150 constraints, problems are : Problem set: 0 solved, 269 unsolved in 7036 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 269 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 3 (OVERLAPS) 179/291 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/291 variables, 36/150 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/291 variables, 269/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
Detected timeout of ITS tools.
At refinement iteration 7 (OVERLAPS) 0/291 variables, 0/419 constraints. Problems are: Problem set: 0 solved, 269 unsolved
No progress, stopping.
After SMT solving in domain Int declared 291/291 variables, and 419 constraints, problems are : Problem set: 0 solved, 269 unsolved in 18120 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 112/112 constraints, ReadFeed: 36/36 constraints, PredecessorRefiner: 269/269 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 25246ms problems are : Problem set: 0 solved, 269 unsolved
Search for dead transitions found 0 dead transitions in 25247ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25559 ms. Remains : 112/112 places, 271/271 transitions.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[97, 94, 84, 63, 289, 62, 79, 169, 663, 163] Max Struct:[+inf, +inf, +inf, +inf, +inf, 64, +inf, +inf, +inf, +inf]
Starting property specific reduction for FunctionPointer-PT-b064-UpperBounds-01
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:13:53] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:13:53] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10001 steps (3 resets) in 13 ms. (714 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 7 ms. (1250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:13:53] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:13:53] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:13:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:53] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:13:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:13:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:13:53] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:13:53] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:13:53] [INFO ] [Nat]Added 36 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:53] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:13:53] [INFO ] Added : 14 causal constraints over 4 iterations in 55 ms. Result :sat
Minimization took 31 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 100 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.1 ms
Discarding 12 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 21 transitions
Reduce isomorphic transitions removed 21 transitions.
Iterating post reduction 0 with 21 rules applied. Total rules applied 22 place count 100 transition count 250
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 25 place count 97 transition count 244
Iterating global reduction 1 with 3 rules applied. Total rules applied 28 place count 97 transition count 244
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 30 place count 97 transition count 242
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 32 place count 95 transition count 234
Iterating global reduction 2 with 2 rules applied. Total rules applied 34 place count 95 transition count 234
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 36 place count 93 transition count 230
Iterating global reduction 2 with 2 rules applied. Total rules applied 38 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 40 place count 91 transition count 226
Iterating global reduction 2 with 2 rules applied. Total rules applied 42 place count 91 transition count 226
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 44 place count 89 transition count 222
Iterating global reduction 2 with 2 rules applied. Total rules applied 46 place count 89 transition count 222
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 48 place count 87 transition count 218
Iterating global reduction 2 with 2 rules applied. Total rules applied 50 place count 87 transition count 218
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 52 place count 85 transition count 214
Iterating global reduction 2 with 2 rules applied. Total rules applied 54 place count 85 transition count 214
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 56 place count 83 transition count 210
Iterating global reduction 2 with 2 rules applied. Total rules applied 58 place count 83 transition count 210
Applied a total of 58 rules in 21 ms. Remains 83 /112 variables (removed 29) and now considering 210/271 (removed 61) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22 ms. Remains : 83/112 places, 210/271 transitions.
[2026-05-25 10:13:53] [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 37 ms. (steps per millisecond=270 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 10:13:53] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
// Phase 1: matrix 130 rows 83 cols
[2026-05-25 10:13:53] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[2] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1075 ms. (929 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 709 ms. (1408 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[248] Max Struct:[+inf]
[2026-05-25 10:13:55] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:13:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:55] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:13:55] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:13:55] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:13:55] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:55] [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 10:13:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:13:55] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:13:55] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:55] [INFO ] Deduced a trap composed of 14 places in 62 ms of which 3 ms to minimize.
[2026-05-25 10:13:55] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 72 ms
[2026-05-25 10:13:55] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 7 ms.
[2026-05-25 10:13:55] [INFO ] Added : 13 causal constraints over 4 iterations in 47 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[248] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[248] 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 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.
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 10:13:56] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:13:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:56] [INFO ] Implicit Places using invariants in 66 ms returned []
[2026-05-25 10:13:56] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:13:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:56] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:13:56] [INFO ] Implicit Places using invariants and state equation in 174 ms returned []
Implicit Place search using SMT with State Equation took 242 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:13:56] [INFO ] Redundant transitions in 0 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:13:56] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:13:56] [INFO ] Invariant cache hit.
[2026-05-25 10:13:56] [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 4858 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 10:14:05] [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 10:14:05] [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 10:14:05] [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 10:14:05] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 4/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 316 constraints, problems are : Problem set: 0 solved, 208 unsolved in 17708 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: 4/4 constraints]
After SMT, in 22620ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 22620ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22876 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:14:19] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 64=1, 96=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 64=1, 112=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[248] Max Struct:[+inf]
[2026-05-25 10:14:19] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:19] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[248] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1124 ms. (888 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 725 ms. (1377 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[248] Max Struct:[+inf]
[2026-05-25 10:14:21] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:21] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:21] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:14:21] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:14:21] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:14:21] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:21] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:21] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:14:21] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:21] [INFO ] Deduced a trap composed of 14 places in 59 ms of which 3 ms to minimize.
[2026-05-25 10:14:21] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 69 ms
[2026-05-25 10:14:21] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 6 ms.
[2026-05-25 10:14:21] [INFO ] Added : 13 causal constraints over 4 iterations in 46 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[248] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[248] 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 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.
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 10:14:22] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:22] [INFO ] Implicit Places using invariants in 75 ms returned []
[2026-05-25 10:14:22] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:22] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:14:22] [INFO ] Implicit Places using invariants and state equation in 174 ms returned []
Implicit Place search using SMT with State Equation took 251 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:14:22] [INFO ] Redundant transitions in 1 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:14:22] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:22] [INFO ] Invariant cache hit.
[2026-05-25 10:14:22] [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 4683 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 10:14:30] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:30] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:30] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:30] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 4/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 316 constraints, problems are : Problem set: 0 solved, 208 unsolved in 17620 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: 4/4 constraints]
After SMT, in 22365ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 22366ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22625 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:14:45] [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 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 34 ms. (steps per millisecond=294 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[248] Max Struct:[+inf]
[2026-05-25 10:14:45] [INFO ] Flatten gal took : 14 ms
[2026-05-25 10:14:45] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:14:45] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3130490768195035927.gal : 2 ms
RANDOM walk for 40004 steps (8 resets) in 72 ms. (548 steps per ms) remains 1/1 properties
[2026-05-25 10:14:45] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6541396560937841151.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/ReachabilityCardinality3130490768195035927.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6541396560937841151.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/ReachabilityCardinality6541396560937841151.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
BEST_FIRST walk for 40004 steps (8 resets) in 76 ms. (519 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1051
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1051 after 168181
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :168181 after 2.62234e+08
Interrupted probabilistic random walk after 1587081 steps, run timeout after 3001 ms. (steps per millisecond=528 ) properties seen :0 out of 1
Probabilistic random walk after 1587081 steps, saw 989366 distinct states, run finished after 3002 ms. (steps per millisecond=528 ) properties seen :0
[2026-05-25 10:14:48] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:48] [INFO ] Invariant cache hit.
[2026-05-25 10:14:48] [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 109 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 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 225ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 409 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.
RANDOM walk for 40000 steps (8 resets) in 90 ms. (439 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1926727 steps, run timeout after 3001 ms. (steps per millisecond=642 ) properties seen :0 out of 1
Probabilistic random walk after 1926727 steps, saw 1222529 distinct states, run finished after 3001 ms. (steps per millisecond=642 ) properties seen :0
[2026-05-25 10:14:51] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:51] [INFO ] Invariant cache hit.
[2026-05-25 10:14:51] [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 89 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 114 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 207ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 437 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 4 ms. Remains 83 /83 variables (removed 0) and now considering 210/210 (removed 0) transitions.
[2026-05-25 10:14:52] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:52] [INFO ] Implicit Places using invariants in 72 ms returned []
[2026-05-25 10:14:52] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:52] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:14:52] [INFO ] Implicit Places using invariants and state equation in 166 ms returned []
Implicit Place search using SMT with State Equation took 238 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:14:52] [INFO ] Redundant transitions in 1 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:14:52] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:14:52] [INFO ] Invariant cache hit.
[2026-05-25 10:14:52] [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 4640 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 10:15:00] [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 10:15:00] [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 10:15:00] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:00] [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, 4/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/213 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :2.62234e+08 after 9.39472e+12
At refinement iteration 7 (OVERLAPS) 0/213 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 208 unsolved
No progress, stopping.
After SMT solving in domain Int declared 213/213 variables, and 316 constraints, problems are : Problem set: 0 solved, 208 unsolved in 17308 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: 4/4 constraints]
After SMT, in 21998ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 21999ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22247 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 22 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 10:15:14] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:15:14] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:15:14] [INFO ] After 11ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:15:14] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:15:14] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:15:14] [INFO ] After 39ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:15:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:15:14] [INFO ] After 9ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:15:14] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:15:14] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:15:14] [INFO ] After 32ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:15:14] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:15:14] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:15:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6780255696064141810.gal : 1 ms
[2026-05-25 10:15:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6876954797397892970.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/ReachabilityCardinality6780255696064141810.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6876954797397892970.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/ReachabilityCardinality6876954797397892970.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 74116
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :74116 after 2.14714e+08
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.14714e+08 after 1.77591e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.77591e+09 after 9.4111e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :9.4111e+09 after 4.27012e+10
Detected timeout of ITS tools.
[2026-05-25 10:15:29] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:15:29] [INFO ] Applying decomposition
[2026-05-25 10:15:29] [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/graph12144629045657965815.txt' '-o' '/tmp/graph12144629045657965815.bin' '-w' '/tmp/graph12144629045657965815.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12144629045657965815.bin' '-l' '-1' '-v' '-w' '/tmp/graph12144629045657965815.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:15:29] [INFO ] Decomposing Gal with order
[2026-05-25 10:15:29] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:15:29] [INFO ] Removed a total of 47 redundant transitions.
[2026-05-25 10:15:29] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:15:29] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 10:15:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15213182422276379078.gal : 1 ms
[2026-05-25 10:15:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6370631130205260204.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/ReachabilityCardinality15213182422276379078.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6370631130205260204.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/ReachabilityCardinality6370631130205260204.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 35107
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :35107 after 6.18404e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.18404e+06 after 1.78986e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.78986e+07 after 4.13277e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.13277e+07 after 8.8186e+07
Detected timeout of ITS tools.
[2026-05-25 10:15:35] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:15:35] [INFO ] Applying decomposition
[2026-05-25 10:15:35] [INFO ] Flatten gal took : 9 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph18389591227021449499.txt' '-o' '/tmp/graph18389591227021449499.bin' '-w' '/tmp/graph18389591227021449499.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph18389591227021449499.bin' '-l' '-1' '-v' '-w' '/tmp/graph18389591227021449499.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:15:35] [INFO ] Decomposing Gal with order
[2026-05-25 10:15:35] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:15:35] [INFO ] Removed a total of 358 redundant transitions.
[2026-05-25 10:15:35] [INFO ] Flatten gal took : 16 ms
[2026-05-25 10:15:35] [INFO ] Fuse similar labels procedure discarded/fused a total of 111 labels/synchronizations in 6 ms.
[2026-05-25 10:15:35] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8927107633373069217.gal : 2 ms
[2026-05-25 10:15:35] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14663115431586258429.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/ReachabilityCardinality8927107633373069217.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14663115431586258429.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/ReachabilityCardinality14663115431586258429.prop.
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :8.8186e+07 after 1.81902e+08
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30220 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:[248] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-01 in 111636 ms.
Starting property specific reduction for FunctionPointer-PT-b064-UpperBounds-02
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:15:45] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:15:45] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (3 resets) in 16 ms. (588 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 10 ms. (909 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 10:15:45] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:15:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:15:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:15:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:15:45] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 10:15:45] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:15:45] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:15:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:15:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:15:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:15:45] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:15:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:15:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:15:45] [INFO ] Added : 2 causal constraints over 1 iterations in 33 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:[62] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 103 are kept as prefixes of interest. Removing 9 places using SCC suffix rule.0 ms
Discarding 9 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 0 with 16 rules applied. Total rules applied 17 place count 103 transition count 255
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 21 place count 99 transition count 247
Iterating global reduction 1 with 4 rules applied. Total rules applied 25 place count 99 transition count 247
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 27 place count 99 transition count 245
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 30 place count 96 transition count 233
Iterating global reduction 2 with 3 rules applied. Total rules applied 33 place count 96 transition count 233
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 36 place count 93 transition count 227
Iterating global reduction 2 with 3 rules applied. Total rules applied 39 place count 93 transition count 227
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 42 place count 90 transition count 219
Iterating global reduction 2 with 3 rules applied. Total rules applied 45 place count 90 transition count 219
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 48 place count 87 transition count 213
Iterating global reduction 2 with 3 rules applied. Total rules applied 51 place count 87 transition count 213
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 54 place count 84 transition count 207
Iterating global reduction 2 with 3 rules applied. Total rules applied 57 place count 84 transition count 207
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 60 place count 81 transition count 201
Iterating global reduction 2 with 3 rules applied. Total rules applied 63 place count 81 transition count 201
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 66 place count 78 transition count 195
Iterating global reduction 2 with 3 rules applied. Total rules applied 69 place count 78 transition count 195
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 70 place count 77 transition count 193
Iterating global reduction 2 with 1 rules applied. Total rules applied 71 place count 77 transition count 193
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 72 place count 76 transition count 191
Iterating global reduction 2 with 1 rules applied. Total rules applied 73 place count 76 transition count 191
Applied a total of 73 rules in 21 ms. Remains 76 /112 variables (removed 36) and now considering 191/271 (removed 80) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 76/112 places, 191/271 transitions.
[2026-05-25 10:15:45] [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 32 ms. (steps per millisecond=312 ) properties (out of 1) seen :[8]
Current structural bounds on expressions (after cover walk) : Max Seen:[62] Max Struct:[+inf]
[2026-05-25 10:15:45] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
// Phase 1: matrix 117 rows 76 cols
[2026-05-25 10:15:45] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[62] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 775 ms. (1288 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 585 ms. (1706 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[93] Max Struct:[+inf]
[2026-05-25 10:15:46] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:15:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:46] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:15:46] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:15:46] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:15:46] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:15:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:15:46] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:15:46] [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 10:15:47] [INFO ] Deduced a trap composed of 13 places in 63 ms of which 5 ms to minimize.
[2026-05-25 10:15:47] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 74 ms
[2026-05-25 10:15:47] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 8 ms.
[2026-05-25 10:15:47] [INFO ] Added : 10 causal constraints over 4 iterations in 38 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[93] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[93] 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 3 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 3 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 3 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 10:15:47] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:15:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:47] [INFO ] Implicit Places using invariants in 72 ms returned []
[2026-05-25 10:15:47] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:15:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:47] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:15:47] [INFO ] Implicit Places using invariants and state equation in 184 ms returned []
Implicit Place search using SMT with State Equation took 256 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:15:47] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:15:47] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:15:47] [INFO ] Invariant cache hit.
[2026-05-25 10:15:47] [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) 0/76 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 2145 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 10:15:52] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:52] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:52] [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 10:15:52] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:53] [INFO ] Deduced a trap along path composed of 3 places in 40 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:53] [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 10:15:53] [INFO ] Deduced a trap along path composed of 3 places in 12 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:53] [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) 0/193 variables, 8/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 0/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (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 13404 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 15590ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 15591ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15862 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:16:02] [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 :[12]
Current structural bounds on expressions (after cover walk) : Max Seen:[93] Max Struct:[+inf]
[2026-05-25 10:16:03] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:03] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[93] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 961 ms. (1039 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 584 ms. (1709 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[93] Max Struct:[+inf]
[2026-05-25 10:16:04] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:04] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:04] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:16:04] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:16:04] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:16:04] [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 10:16:04] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:04] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:16:04] [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 10:16:04] [INFO ] Deduced a trap composed of 13 places in 72 ms of which 5 ms to minimize.
[2026-05-25 10:16:04] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 82 ms
[2026-05-25 10:16:04] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 5 ms.
[2026-05-25 10:16:04] [INFO ] Added : 10 causal constraints over 4 iterations in 37 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[93] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[93] 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 3 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 3 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 2 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 10:16:04] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:05] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 10:16:05] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:05] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:16:05] [INFO ] Implicit Places using invariants and state equation in 196 ms returned []
Implicit Place search using SMT with State Equation took 295 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:16:05] [INFO ] Redundant transitions in 1 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:16:05] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:05] [INFO ] Invariant cache hit.
[2026-05-25 10:16:05] [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 2089 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 10:16:10] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:10] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:10] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:10] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:11] [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 10:16:11] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:11] [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 10:16:11] [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) 0/193 variables, 8/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 0/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (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 13493 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 15633ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 15635ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15944 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:16:20] [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 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[93] Max Struct:[+inf]
[2026-05-25 10:16:21] [INFO ] Flatten gal took : 12 ms
[2026-05-25 10:16:21] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:16:21] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12911056266895887977.gal : 1 ms
[2026-05-25 10:16:21] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12712452320443705774.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/ReachabilityCardinality12911056266895887977.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12712452320443705774.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
RANDOM walk for 40003 steps (8 resets) in 102 ms. (388 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality12712452320443705774.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
BEST_FIRST walk for 40004 steps (8 resets) in 35 ms. (1111 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1031
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1031 after 150024
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :150024 after 1.65338e+08
Interrupted probabilistic random walk after 2024466 steps, run timeout after 3001 ms. (steps per millisecond=674 ) properties seen :0 out of 1
Probabilistic random walk after 2024466 steps, saw 1260126 distinct states, run finished after 3001 ms. (steps per millisecond=674 ) properties seen :0
[2026-05-25 10:16:24] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:24] [INFO ] Invariant cache hit.
[2026-05-25 10:16:24] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 80 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:24] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/175 variables, 1/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/190 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/190 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 3/193 variables, 2/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 99 constraints, problems are : Problem set: 0 solved, 1 unsolved in 155 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 269ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 3 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 3 ms. Remains : 76/76 places, 191/191 transitions.
RANDOM walk for 40000 steps (8 resets) in 91 ms. (434 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1822386 steps, run timeout after 3001 ms. (steps per millisecond=607 ) properties seen :0 out of 1
Probabilistic random walk after 1822386 steps, saw 1134348 distinct states, run finished after 3001 ms. (steps per millisecond=607 ) properties seen :0
[2026-05-25 10:16:27] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:27] [INFO ] Invariant cache hit.
[2026-05-25 10:16:27] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 88 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:27] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/175 variables, 1/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/190 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/190 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 3/193 variables, 2/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 99 constraints, problems are : Problem set: 0 solved, 1 unsolved in 136 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 228ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 2 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 2 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 10:16:27] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:27] [INFO ] Implicit Places using invariants in 61 ms returned []
[2026-05-25 10:16:27] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:27] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:16:27] [INFO ] Implicit Places using invariants and state equation in 178 ms returned []
Implicit Place search using SMT with State Equation took 240 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:16:27] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:16:27] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:16:27] [INFO ] Invariant cache hit.
[2026-05-25 10:16:27] [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 2213 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
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.65338e+08 after 3.14437e+12
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:33] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:33] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:33] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:33] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:33] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:34] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:34] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:34] [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) 0/193 variables, 8/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 0/294 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (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 13711 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 15964ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 15965ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16215 ms. Remains : 76/76 places, 191/191 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 74 transitions
Reduce isomorphic transitions removed 74 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 76 transition count 110
Reduce places removed 7 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 8 rules applied. Total rules applied 89 place count 69 transition count 109
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 90 place count 68 transition count 109
Performed 12 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 12 Pre rules applied. Total rules applied 90 place count 68 transition count 97
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 3 with 24 rules applied. Total rules applied 114 place count 56 transition count 97
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 3 with 30 rules applied. Total rules applied 144 place count 41 transition count 82
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 151 place count 34 transition count 68
Iterating global reduction 3 with 7 rules applied. Total rules applied 158 place count 34 transition count 68
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 165 place count 27 transition count 54
Iterating global reduction 3 with 7 rules applied. Total rules applied 172 place count 27 transition count 54
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 179 place count 20 transition count 40
Iterating global reduction 3 with 7 rules applied. Total rules applied 186 place count 20 transition count 40
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 3 with 7 rules applied. Total rules applied 193 place count 20 transition count 33
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 1 Pre rules applied. Total rules applied 193 place count 20 transition count 32
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 195 place count 19 transition count 32
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 197 place count 18 transition count 32
Applied a total of 197 rules in 19 ms. Remains 18 /76 variables (removed 58) and now considering 32/191 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 32 rows 18 cols
[2026-05-25 10:16:43] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:16:43] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:16:43] [INFO ] After 28ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:16:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:43] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:16:43] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:16:43] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:16:43] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:16:43] [INFO ] After 31ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:16:43] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:16:43] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:16:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9546033051072252071.gal : 1 ms
[2026-05-25 10:16:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12239735381218827065.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/ReachabilityCardinality9546033051072252071.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12239735381218827065.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/ReachabilityCardinality12239735381218827065.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 35107
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :35107 after 6.2298e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.2298e+06 after 1.79901e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.79901e+07 after 4.1465e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.1465e+07 after 8.8369e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :8.8369e+07 after 1.82131e+08
Detected timeout of ITS tools.
[2026-05-25 10:16:58] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:16:58] [INFO ] Applying decomposition
[2026-05-25 10:16:58] [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/graph6293206322641828674.txt' '-o' '/tmp/graph6293206322641828674.bin' '-w' '/tmp/graph6293206322641828674.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph6293206322641828674.bin' '-l' '-1' '-v' '-w' '/tmp/graph6293206322641828674.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:16:58] [INFO ] Decomposing Gal with order
[2026-05-25 10:16:58] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:16:58] [INFO ] Removed a total of 23 redundant transitions.
[2026-05-25 10:16:58] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:16:58] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 10:16:58] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4032659939435715535.gal : 1 ms
[2026-05-25 10:16:58] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality17868309394995251434.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/ReachabilityCardinality4032659939435715535.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality17868309394995251434.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/ReachabilityCardinality17868309394995251434.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 422627
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :422627 after 3.16823e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :3.16823e+06 after 1.48849e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.48849e+07 after 3.8314e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :3.8314e+07 after 8.51722e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :8.51722e+07 after 1.78889e+08
Detected timeout of ITS tools.
[2026-05-25 10:17:11] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:17:11] [INFO ] Applying decomposition
[2026-05-25 10:17:11] [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/graph9502933220557985873.txt' '-o' '/tmp/graph9502933220557985873.bin' '-w' '/tmp/graph9502933220557985873.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph9502933220557985873.bin' '-l' '-1' '-v' '-w' '/tmp/graph9502933220557985873.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:17:11] [INFO ] Decomposing Gal with order
[2026-05-25 10:17:11] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:17:11] [INFO ] Removed a total of 323 redundant transitions.
[2026-05-25 10:17:11] [INFO ] Flatten gal took : 14 ms
[2026-05-25 10:17:11] [INFO ] Fuse similar labels procedure discarded/fused a total of 84 labels/synchronizations in 4 ms.
[2026-05-25 10:17:11] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10582450758301252298.gal : 2 ms
[2026-05-25 10:17:11] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18053105947134008013.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/ReachabilityCardinality10582450758301252298.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18053105947134008013.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/ReachabilityCardinality18053105947134008013.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30188 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:[93] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-02 in 88999 ms.
Starting property specific reduction for FunctionPointer-PT-b064-UpperBounds-06
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:17:14] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:17:14] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 20 ms. (476 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 10:17:14] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:17:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:17:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:17:14] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:17:14] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:17:14] [INFO ] [Real]Added 36 Read/Feed constraints in 12 ms returned sat
[2026-05-25 10:17:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:17:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:14] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:17:14] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:17:14] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:17:14] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:17:14] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 27 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:[63] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 103 are kept as prefixes of interest. Removing 9 places using SCC suffix rule.0 ms
Discarding 9 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 0 with 16 rules applied. Total rules applied 17 place count 103 transition count 255
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 21 place count 99 transition count 247
Iterating global reduction 1 with 4 rules applied. Total rules applied 25 place count 99 transition count 247
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 27 place count 99 transition count 245
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 30 place count 96 transition count 233
Iterating global reduction 2 with 3 rules applied. Total rules applied 33 place count 96 transition count 233
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 36 place count 93 transition count 227
Iterating global reduction 2 with 3 rules applied. Total rules applied 39 place count 93 transition count 227
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 42 place count 90 transition count 219
Iterating global reduction 2 with 3 rules applied. Total rules applied 45 place count 90 transition count 219
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 48 place count 87 transition count 213
Iterating global reduction 2 with 3 rules applied. Total rules applied 51 place count 87 transition count 213
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 54 place count 84 transition count 207
Iterating global reduction 2 with 3 rules applied. Total rules applied 57 place count 84 transition count 207
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 60 place count 81 transition count 201
Iterating global reduction 2 with 3 rules applied. Total rules applied 63 place count 81 transition count 201
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 66 place count 78 transition count 195
Iterating global reduction 2 with 3 rules applied. Total rules applied 69 place count 78 transition count 195
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 70 place count 77 transition count 193
Iterating global reduction 2 with 1 rules applied. Total rules applied 71 place count 77 transition count 193
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 72 place count 76 transition count 191
Iterating global reduction 2 with 1 rules applied. Total rules applied 73 place count 76 transition count 191
Applied a total of 73 rules in 19 ms. Remains 76 /112 variables (removed 36) and now considering 191/271 (removed 80) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19 ms. Remains : 76/112 places, 191/271 transitions.
[2026-05-25 10:17:14] [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 1 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 32 ms. (steps per millisecond=312 ) properties (out of 1) seen :[10]
Current structural bounds on expressions (after cover walk) : Max Seen:[63] Max Struct:[+inf]
[2026-05-25 10:17:14] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
// Phase 1: matrix 117 rows 76 cols
[2026-05-25 10:17:14] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[63] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 833 ms. (1199 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 591 ms. (1689 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[106] Max Struct:[+inf]
[2026-05-25 10:17:15] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:15] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:15] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:17:15] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:17:15] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:17:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:16] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:17:16] [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 10:17:16] [INFO ] Deduced a trap composed of 13 places in 59 ms of which 4 ms to minimize.
[2026-05-25 10:17:16] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
[2026-05-25 10:17:16] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 7 ms.
[2026-05-25 10:17:16] [INFO ] Added : 8 causal constraints over 3 iterations in 33 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[106] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[106] 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 2 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 2 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 3 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 10:17:16] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:16] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 10:17:16] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:16] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:17:16] [INFO ] Implicit Places using invariants and state equation in 176 ms returned []
Implicit Place search using SMT with State Equation took 248 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:17:16] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:17:16] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:16] [INFO ] Invariant cache hit.
[2026-05-25 10:17:16] [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 2197 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 10:17:21] [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 10:17:22] [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) 0/193 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (OVERLAPS) 0/193 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 288 constraints, problems are : Problem set: 0 solved, 189 unsolved in 14249 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: 2/2 constraints]
After SMT, in 16488ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 16489ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16745 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:17:32] [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 32 ms. (steps per millisecond=312 ) properties (out of 1) seen :[10]
Current structural bounds on expressions (after cover walk) : Max Seen:[106] Max Struct:[+inf]
[2026-05-25 10:17:33] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:33] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[106] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 923 ms. (1082 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 567 ms. (1760 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[106] Max Struct:[+inf]
[2026-05-25 10:17:34] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:34] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:34] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:17:34] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:17:34] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:17:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:34] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:17:34] [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 10:17:34] [INFO ] Deduced a trap composed of 13 places in 62 ms of which 5 ms to minimize.
[2026-05-25 10:17:34] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 10:17:34] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 8 ms.
[2026-05-25 10:17:34] [INFO ] Added : 8 causal constraints over 3 iterations in 35 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[106] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[106] 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 3 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 3 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 3 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 10:17:34] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:34] [INFO ] Implicit Places using invariants in 76 ms returned []
[2026-05-25 10:17:34] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:34] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:17:35] [INFO ] Implicit Places using invariants and state equation in 168 ms returned []
Implicit Place search using SMT with State Equation took 245 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:17:35] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:17:35] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:35] [INFO ] Invariant cache hit.
[2026-05-25 10:17:35] [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 2210 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 10:17:40] [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 10:17:41] [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) 0/193 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (OVERLAPS) 0/193 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 288 constraints, problems are : Problem set: 0 solved, 189 unsolved in 14004 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: 2/2 constraints]
After SMT, in 16260ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 16261ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16518 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:17:51] [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 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[7]
Current structural bounds on expressions (after cover walk) : Max Seen:[106] Max Struct:[+inf]
[2026-05-25 10:17:51] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:17:51] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:17:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality18123275874097816886.gal : 1 ms
[2026-05-25 10:17:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12341186989141469292.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/ReachabilityCardinality18123275874097816886.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12341186989141469292.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40045 steps (8 resets) in 52 ms. (755 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
Loading property file /tmp/ReachabilityCardinality12341186989141469292.prop.
BEST_FIRST walk for 40004 steps (8 resets) in 31 ms. (1250 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 923
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :923 after 103738
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :103738 after 7.00547e+07
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :7.00547e+07 after 4.05225e+11
Interrupted probabilistic random walk after 1840957 steps, run timeout after 3001 ms. (steps per millisecond=613 ) properties seen :0 out of 1
Probabilistic random walk after 1840957 steps, saw 1174964 distinct states, run finished after 3001 ms. (steps per millisecond=613 ) properties seen :0
[2026-05-25 10:17:54] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:54] [INFO ] Invariant cache hit.
[2026-05-25 10:17:54] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 95 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:54] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/175 variables, 1/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/190 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/190 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 3/193 variables, 2/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 99 constraints, problems are : Problem set: 0 solved, 1 unsolved in 150 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 249ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 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.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 76/76 places, 191/191 transitions.
RANDOM walk for 40001 steps (8 resets) in 76 ms. (519 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 35 ms. (1111 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1795289 steps, run timeout after 3001 ms. (steps per millisecond=598 ) properties seen :0 out of 1
Probabilistic random walk after 1795289 steps, saw 1144944 distinct states, run finished after 3001 ms. (steps per millisecond=598 ) properties seen :0
[2026-05-25 10:17:57] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:57] [INFO ] Invariant cache hit.
[2026-05-25 10:17:57] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 111 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:58] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/175 variables, 1/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/190 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/190 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 3/193 variables, 2/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/193 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 99 constraints, problems are : Problem set: 0 solved, 1 unsolved in 171 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 287ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 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.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 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 3 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 10:17:58] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:58] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-05-25 10:17:58] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:58] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:17:58] [INFO ] Implicit Places using invariants and state equation in 176 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 10:17:58] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:17:58] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:17:58] [INFO ] Invariant cache hit.
[2026-05-25 10:17:58] [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 2147 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
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :4.05225e+11 after 2.075e+16
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 10:18:03] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:04] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 4 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (OVERLAPS) 0/193 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 288 constraints, problems are : Problem set: 0 solved, 189 unsolved in 14275 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: 2/2 constraints]
After SMT, in 16486ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 16488ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16740 ms. Remains : 76/76 places, 191/191 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 74 transitions
Reduce isomorphic transitions removed 74 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 76 transition count 110
Reduce places removed 7 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 8 rules applied. Total rules applied 89 place count 69 transition count 109
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 90 place count 68 transition count 109
Performed 12 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 12 Pre rules applied. Total rules applied 90 place count 68 transition count 97
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 3 with 24 rules applied. Total rules applied 114 place count 56 transition count 97
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 3 with 30 rules applied. Total rules applied 144 place count 41 transition count 82
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 151 place count 34 transition count 68
Iterating global reduction 3 with 7 rules applied. Total rules applied 158 place count 34 transition count 68
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 165 place count 27 transition count 54
Iterating global reduction 3 with 7 rules applied. Total rules applied 172 place count 27 transition count 54
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 179 place count 20 transition count 40
Iterating global reduction 3 with 7 rules applied. Total rules applied 186 place count 20 transition count 40
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 3 with 7 rules applied. Total rules applied 193 place count 20 transition count 33
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 1 Pre rules applied. Total rules applied 193 place count 20 transition count 32
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 195 place count 19 transition count 32
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 197 place count 18 transition count 32
Applied a total of 197 rules in 14 ms. Remains 18 /76 variables (removed 58) and now considering 32/191 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 32 rows 18 cols
[2026-05-25 10:18:14] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:18:14] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:18:14] [INFO ] After 103ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:18:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:14] [INFO ] After 7ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:18:14] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:18:14] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:18:14] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:18:14] [INFO ] After 30ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:18:14] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:18:14] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:18:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5871949570926732967.gal : 2 ms
[2026-05-25 10:18:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality183315774268843832.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/ReachabilityCardinality5871949570926732967.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality183315774268843832.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...327
Loading property file /tmp/ReachabilityCardinality183315774268843832.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 35107
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :35107 after 6.2298e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.2298e+06 after 1.79901e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.79901e+07 after 4.1465e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.1465e+07 after 8.8369e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :8.8369e+07 after 1.82131e+08
Detected timeout of ITS tools.
[2026-05-25 10:18:30] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:18:30] [INFO ] Applying decomposition
[2026-05-25 10:18:30] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph3859907344025630823.txt' '-o' '/tmp/graph3859907344025630823.bin' '-w' '/tmp/graph3859907344025630823.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph3859907344025630823.bin' '-l' '-1' '-v' '-w' '/tmp/graph3859907344025630823.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:18:30] [INFO ] Decomposing Gal with order
[2026-05-25 10:18:30] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:18:30] [INFO ] Removed a total of 23 redundant transitions.
[2026-05-25 10:18:30] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:18:30] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 10:18:30] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5618015807685943539.gal : 0 ms
[2026-05-25 10:18:30] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8490677152109884767.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/ReachabilityCardinality5618015807685943539.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8490677152109884767.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/ReachabilityCardinality8490677152109884767.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 23137
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :23137 after 2.17639e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.17639e+06 after 9.02509e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :9.02509e+06 after 2.65994e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.65994e+07 after 6.41226e+07
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :2.075e+16 after 5.82585e+20
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :6.41226e+07 after 1.39169e+08
Detected timeout of ITS tools.
[2026-05-25 10:18:41] [INFO ] Flatten gal took : 6 ms
[2026-05-25 10:18:41] [INFO ] Applying decomposition
[2026-05-25 10:18:41] [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/graph6717487277722803604.txt' '-o' '/tmp/graph6717487277722803604.bin' '-w' '/tmp/graph6717487277722803604.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph6717487277722803604.bin' '-l' '-1' '-v' '-w' '/tmp/graph6717487277722803604.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:18:41] [INFO ] Decomposing Gal with order
[2026-05-25 10:18:41] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:18:41] [INFO ] Removed a total of 323 redundant transitions.
[2026-05-25 10:18:41] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:18:41] [INFO ] Fuse similar labels procedure discarded/fused a total of 91 labels/synchronizations in 4 ms.
[2026-05-25 10:18:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15496352601672169042.gal : 2 ms
[2026-05-25 10:18:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11191423968801085143.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/ReachabilityCardinality15496352601672169042.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11191423968801085143.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/ReachabilityCardinality11191423968801085143.prop.
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :1.39169e+08 after 2.89079e+08
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30265 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:[106] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-06 in 91073 ms.
Starting property specific reduction for FunctionPointer-PT-b064-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 10:18:45] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:18:45] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10037 steps (3 resets) in 11 ms. (836 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:[9] Max Struct:[+inf]
[2026-05-25 10:18:45] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:18:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:18:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:45] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:18:45] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:18:45] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:18:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:45] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:18:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:18:45] [INFO ] Added : 2 causal constraints over 1 iterations in 32 ms. Result :sat
Minimization took 29 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[9] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[62] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 103 are kept as prefixes of interest. Removing 9 places using SCC suffix rule.0 ms
Discarding 9 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 15 transitions
Reduce isomorphic transitions removed 15 transitions.
Iterating post reduction 0 with 15 rules applied. Total rules applied 16 place count 103 transition count 256
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 20 place count 99 transition count 248
Iterating global reduction 1 with 4 rules applied. Total rules applied 24 place count 99 transition count 248
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 26 place count 99 transition count 246
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 29 place count 96 transition count 234
Iterating global reduction 2 with 3 rules applied. Total rules applied 32 place count 96 transition count 234
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 35 place count 93 transition count 228
Iterating global reduction 2 with 3 rules applied. Total rules applied 38 place count 93 transition count 228
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 41 place count 90 transition count 220
Iterating global reduction 2 with 3 rules applied. Total rules applied 44 place count 90 transition count 220
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 47 place count 87 transition count 214
Iterating global reduction 2 with 3 rules applied. Total rules applied 50 place count 87 transition count 214
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 53 place count 84 transition count 208
Iterating global reduction 2 with 3 rules applied. Total rules applied 56 place count 84 transition count 208
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 59 place count 81 transition count 202
Iterating global reduction 2 with 3 rules applied. Total rules applied 62 place count 81 transition count 202
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 65 place count 78 transition count 196
Iterating global reduction 2 with 3 rules applied. Total rules applied 68 place count 78 transition count 196
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 69 place count 77 transition count 194
Iterating global reduction 2 with 1 rules applied. Total rules applied 70 place count 77 transition count 194
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 71 place count 76 transition count 192
Iterating global reduction 2 with 1 rules applied. Total rules applied 72 place count 76 transition count 192
Applied a total of 72 rules in 21 ms. Remains 76 /112 variables (removed 36) and now considering 192/271 (removed 79) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 76/112 places, 192/271 transitions.
[2026-05-25 10:18:45] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {32=1, 57=1, 103=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 54=1, 84=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 17 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[62] Max Struct:[+inf]
[2026-05-25 10:18:45] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
// Phase 1: matrix 118 rows 76 cols
[2026-05-25 10:18:45] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[62] Max Struct:[+inf]
RANDOM walk for 1000000 steps (4 resets) in 925 ms. (1079 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 581 ms. (1718 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[62] Max Struct:[+inf]
[2026-05-25 10:18:47] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:18:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:47] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:47] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:18:47] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:18:47] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:18:47] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:47] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:18:47] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:18:47] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:18:47] [INFO ] [Nat]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:18:47] [INFO ] Computed and/alt/rep : 62/198/53 causal constraints (skipped 63 transitions) in 5 ms.
[2026-05-25 10:18:47] [INFO ] Added : 5 causal constraints over 2 iterations in 28 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[62] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[64] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 8 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:18:47] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:18:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:47] [INFO ] Implicit Places using invariants in 78 ms returned []
[2026-05-25 10:18:47] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:18:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:47] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:18:47] [INFO ] Implicit Places using invariants and state equation in 157 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 10:18:47] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:18:47] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:18:47] [INFO ] Invariant cache hit.
[2026-05-25 10:18:47] [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) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3294 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 286 constraints, problems are : Problem set: 0 solved, 190 unsolved in 9882 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 13226ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 13227ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13477 ms. Remains : 76/76 places, 192/192 transitions.
[2026-05-25 10:19:00] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {32=1, 57=1, 103=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 54=1, 84=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 23 resets, run finished after 47 ms. (steps per millisecond=212 ) properties (out of 1) seen :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 10:19:00] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 10:19:00] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000000 steps (3 resets) in 1024 ms. (975 steps per ms)
FORMULA FunctionPointer-PT-b064-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 10:19:01] [INFO ] Flatten gal took : 14 ms
[2026-05-25 10:19:01] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:19:01] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9489713599387159384.gal : 1 ms
[2026-05-25 10:19:01] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4746566636799460631.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/ReachabilityCardinality9489713599387159384.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4746566636799460631.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-b064-UpperBounds-07 in 16820 ms.
Starting property specific reduction for FunctionPointer-PT-b064-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 10:19:01] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:19:01] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10037 steps (2 resets) in 11 ms. (836 steps per ms)
BEST_FIRST walk for 10001 steps (3 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5] Max Struct:[+inf]
[2026-05-25 10:19:01] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:19:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:19:01] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:19:02] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:19:02] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:19:02] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:19:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:19:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:19:02] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:19:02] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:19:02] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 8 ms.
[2026-05-25 10:19:02] [INFO ] Added : 5 causal constraints over 3 iterations in 44 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[5] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[5] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 100 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 21 transitions
Reduce isomorphic transitions removed 21 transitions.
Iterating post reduction 0 with 21 rules applied. Total rules applied 22 place count 100 transition count 250
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 25 place count 97 transition count 244
Iterating global reduction 1 with 3 rules applied. Total rules applied 28 place count 97 transition count 244
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 30 place count 97 transition count 242
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 32 place count 95 transition count 234
Iterating global reduction 2 with 2 rules applied. Total rules applied 34 place count 95 transition count 234
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 36 place count 93 transition count 230
Iterating global reduction 2 with 2 rules applied. Total rules applied 38 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 40 place count 91 transition count 224
Iterating global reduction 2 with 2 rules applied. Total rules applied 42 place count 91 transition count 224
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 44 place count 89 transition count 220
Iterating global reduction 2 with 2 rules applied. Total rules applied 46 place count 89 transition count 220
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 48 place count 87 transition count 216
Iterating global reduction 2 with 2 rules applied. Total rules applied 50 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 52 place count 85 transition count 212
Iterating global reduction 2 with 2 rules applied. Total rules applied 54 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 56 place count 83 transition count 208
Iterating global reduction 2 with 2 rules applied. Total rules applied 58 place count 83 transition count 208
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 59 place count 82 transition count 206
Iterating global reduction 2 with 1 rules applied. Total rules applied 60 place count 82 transition count 206
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 61 place count 81 transition count 204
Iterating global reduction 2 with 1 rules applied. Total rules applied 62 place count 81 transition count 204
Applied a total of 62 rules in 17 ms. Remains 81 /112 variables (removed 31) and now considering 204/271 (removed 67) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17 ms. Remains : 81/112 places, 204/271 transitions.
[2026-05-25 10:19:02] [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 {30=1, 62=1, 92=1, 120=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 57=1, 87=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5] Max Struct:[+inf]
[2026-05-25 10:19:02] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
// Phase 1: matrix 125 rows 81 cols
[2026-05-25 10:19:02] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[5] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1070 ms. (933 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 690 ms. (1447 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[635] Max Struct:[+inf]
[2026-05-25 10:19:04] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:04] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:04] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:19:04] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:19:04] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:04] [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 10:19:04] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:04] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:19:04] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:04] [INFO ] Deduced a trap composed of 14 places in 64 ms of which 5 ms to minimize.
[2026-05-25 10:19:04] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 77 ms
[2026-05-25 10:19:04] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 70 transitions) in 8 ms.
[2026-05-25 10:19:04] [INFO ] Added : 17 causal constraints over 4 iterations in 46 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[635] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[635] 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 10:19:05] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:05] [INFO ] Implicit Places using invariants in 75 ms returned []
[2026-05-25 10:19:05] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:05] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:19:06] [INFO ] Implicit Places using invariants and state equation in 180 ms returned []
Implicit Place search using SMT with State Equation took 256 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:19:06] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 10:19:06] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:06] [INFO ] Invariant cache hit.
[2026-05-25 10:19:06] [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
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/206 variables, 18/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 202 unsolved in 4450 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: 0/0 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, 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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 202/304 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 10:19:13] [INFO ] Deduced a trap along path composed of 3 places in 32 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:13] [INFO ] Deduced a trap along path composed of 3 places in 33 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:13] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:13] [INFO ] Deduced a trap along path composed of 3 places in 33 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:13] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:14] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:14] [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) 0/206 variables, 7/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 7 (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 14358 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: 0/0 constraints, Known Traps Along Path: 7/7 constraints]
After SMT, in 18857ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 18858ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19127 ms. Remains : 81/81 places, 204/204 transitions.
[2026-05-25 10:19:24] [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 {30=1, 62=1, 92=1, 120=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 57=1, 87=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[635] Max Struct:[+inf]
[2026-05-25 10:19:25] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:25] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[635] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1018 ms. (981 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 669 ms. (1492 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[635] Max Struct:[+inf]
[2026-05-25 10:19:26] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:26] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:26] [INFO ] [Real]Absence check using state equation in 42 ms returned sat
[2026-05-25 10:19:26] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:19:26] [INFO ] [Real]Added 18 Read/Feed constraints in 17 ms returned sat
[2026-05-25 10:19:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:26] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:19:26] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:26] [INFO ] Deduced a trap composed of 14 places in 69 ms of which 6 ms to minimize.
[2026-05-25 10:19:26] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 91 ms
[2026-05-25 10:19:26] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 70 transitions) in 6 ms.
[2026-05-25 10:19:26] [INFO ] Added : 17 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[635] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[635] 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 10:19:28] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:28] [INFO ] Implicit Places using invariants in 108 ms returned []
[2026-05-25 10:19:28] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:28] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:19:28] [INFO ] Implicit Places using invariants and state equation in 195 ms returned []
Implicit Place search using SMT with State Equation took 306 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:19:28] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 10:19:28] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:28] [INFO ] Invariant cache hit.
[2026-05-25 10:19:28] [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
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/206 variables, 18/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 202 unsolved in 4488 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: 0/0 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, 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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 202/304 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 10:19:36] [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 10:19:36] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:36] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:36] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:36] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:36] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:36] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 7/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 7 (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 14287 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: 0/0 constraints, Known Traps Along Path: 7/7 constraints]
After SMT, in 18826ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 18827ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19139 ms. Remains : 81/81 places, 204/204 transitions.
[2026-05-25 10:19:47] [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 {30=1, 62=1, 92=1, 120=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {25=1, 57=1, 87=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[635] Max Struct:[+inf]
[2026-05-25 10:19:47] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:19:47] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:19:47] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1160389822491516792.gal : 1 ms
[2026-05-25 10:19:47] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13009775226036956534.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/ReachabilityCardinality1160389822491516792.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13009775226036956534.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/ReachabilityCardinality13009775226036956534.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
RANDOM walk for 40004 steps (8 resets) in 198 ms. (201 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1040
BEST_FIRST walk for 40004 steps (8 resets) in 67 ms. (588 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1040 after 155244
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :155244 after 1.77406e+08
Interrupted probabilistic random walk after 1767710 steps, run timeout after 3001 ms. (steps per millisecond=589 ) properties seen :0 out of 1
Probabilistic random walk after 1767710 steps, saw 1112714 distinct states, run finished after 3001 ms. (steps per millisecond=589 ) properties seen :0
[2026-05-25 10:19:50] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:50] [INFO ] Invariant cache hit.
[2026-05-25 10:19:50] [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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 7/99 variables, 2/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/99 variables, 3/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 95/194 variables, 55/76 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/194 variables, 17/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/200 variables, 1/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/200 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/206 variables, 8/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (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 88 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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 1/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/92 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 7/99 variables, 2/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/99 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 95/194 variables, 55/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 6/200 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/200 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/206 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (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 114 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 206ms problems are : Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.77406e+08 after 2.78305e+12
Parikh walk visited 0 properties in 866 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 80 ms. (493 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1799358 steps, run timeout after 3001 ms. (steps per millisecond=599 ) properties seen :0 out of 1
Probabilistic random walk after 1799358 steps, saw 1134438 distinct states, run finished after 3001 ms. (steps per millisecond=599 ) properties seen :0
[2026-05-25 10:19:54] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:54] [INFO ] Invariant cache hit.
[2026-05-25 10:19:54] [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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 7/99 variables, 2/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/99 variables, 3/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 95/194 variables, 55/76 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/194 variables, 17/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/200 variables, 1/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/200 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/206 variables, 8/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (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 93 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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 1/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/92 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 7/99 variables, 2/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/99 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 95/194 variables, 55/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 6/200 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/200 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/206 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (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 96 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 194ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 859 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 4 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 10:19:55] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:55] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 10:19:55] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:55] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:19:56] [INFO ] Implicit Places using invariants and state equation in 168 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 10:19:56] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 10:19:56] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:19:56] [INFO ] Invariant cache hit.
[2026-05-25 10:19:56] [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) 0/81 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
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/206 variables, 18/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 202 unsolved in 4355 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: 0/0 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, 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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 202/304 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 10:20:03] [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 10:20:03] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:03] [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 10:20:03] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:03] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:03] [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 10:20:04] [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) 0/206 variables, 7/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/206 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 202 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.78305e+12 after 8.75387e+17
At refinement iteration 7 (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 14243 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: 0/0 constraints, Known Traps Along Path: 7/7 constraints]
After SMT, in 18642ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 18643ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18893 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 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 85 rules applied. Total rules applied 85 place count 81 transition count 119
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 91 place count 75 transition count 119
Performed 17 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 17 Pre rules applied. Total rules applied 91 place count 75 transition count 102
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 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 13 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 10:20:14] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:20:14] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:20:14] [INFO ] After 9ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:20:14] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:20:14] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:20:14] [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 10:20:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:14] [INFO ] After 9ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:20:14] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:20:14] [INFO ] After 5ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:20:14] [INFO ] After 34ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:20:14] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:20:14] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:20:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1301391521138143084.gal : 1 ms
[2026-05-25 10:20:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13874628841781282061.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/ReachabilityCardinality1301391521138143084.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13874628841781282061.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/ReachabilityCardinality13874628841781282061.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 74116
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :74116 after 2.14714e+08
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.14714e+08 after 1.77591e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.77591e+09 after 9.4111e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :9.4111e+09 after 4.27012e+10
Detected timeout of ITS tools.
[2026-05-25 10:20:29] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:20:29] [INFO ] Applying decomposition
[2026-05-25 10:20:29] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph1998605356832787436.txt' '-o' '/tmp/graph1998605356832787436.bin' '-w' '/tmp/graph1998605356832787436.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1998605356832787436.bin' '-l' '-1' '-v' '-w' '/tmp/graph1998605356832787436.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:20:29] [INFO ] Decomposing Gal with order
[2026-05-25 10:20:29] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:20:29] [INFO ] Removed a total of 30 redundant transitions.
[2026-05-25 10:20:29] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:20:29] [INFO ] Fuse similar labels procedure discarded/fused a total of 8 labels/synchronizations in 0 ms.
[2026-05-25 10:20:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10268820080329843181.gal : 0 ms
[2026-05-25 10:20:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2178342590410152262.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/ReachabilityCardinality10268820080329843181.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2178342590410152262.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/ReachabilityCardinality2178342590410152262.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 932228
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :932228 after 2.81596e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.81596e+07 after 1.93124e+08
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.93124e+08 after 9.76398e+08
Detected timeout of ITS tools.
[2026-05-25 10:20:37] [INFO ] Flatten gal took : 8 ms
[2026-05-25 10:20:37] [INFO ] Applying decomposition
[2026-05-25 10:20:37] [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/graph15047076459487788754.txt' '-o' '/tmp/graph15047076459487788754.bin' '-w' '/tmp/graph15047076459487788754.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph15047076459487788754.bin' '-l' '-1' '-v' '-w' '/tmp/graph15047076459487788754.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:20:37] [INFO ] Decomposing Gal with order
[2026-05-25 10:20:37] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:20:37] [INFO ] Removed a total of 344 redundant transitions.
[2026-05-25 10:20:37] [INFO ] Flatten gal took : 20 ms
[2026-05-25 10:20:37] [INFO ] Fuse similar labels procedure discarded/fused a total of 103 labels/synchronizations in 2 ms.
[2026-05-25 10:20:37] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2995997683617400511.gal : 1 ms
[2026-05-25 10:20:37] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9945137796140282991.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/ReachabilityCardinality2995997683617400511.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9945137796140282991.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/ReachabilityCardinality9945137796140282991.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30157 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:[635] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-08 in 102996 ms.
Starting property specific reduction for FunctionPointer-PT-b064-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:[64]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[64]
[2026-05-25 10:20:44] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:20:44] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[64]
RANDOM walk for 10002 steps (2 resets) in 12 ms. (769 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[8] Max Struct:[64]
[2026-05-25 10:20:44] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:20:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:20:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:45] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:20:45] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:20:45] [INFO ] [Real]Added 36 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:20:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:20:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:20:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:20:45] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:20:45] [INFO ] [Nat]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:20:45] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 9 ms.
[2026-05-25 10:20:45] [INFO ] Added : 4 causal constraints over 2 iterations in 38 ms. Result :sat
Minimization took 66 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[8] Max Struct:[64]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[63] Max Struct:[64]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 100 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.1 ms
Discarding 12 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 21 transitions
Reduce isomorphic transitions removed 21 transitions.
Iterating post reduction 0 with 21 rules applied. Total rules applied 22 place count 100 transition count 250
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 26 place count 96 transition count 242
Iterating global reduction 1 with 4 rules applied. Total rules applied 30 place count 96 transition count 242
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 32 place count 96 transition count 240
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 35 place count 93 transition count 228
Iterating global reduction 2 with 3 rules applied. Total rules applied 38 place count 93 transition count 228
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 41 place count 90 transition count 222
Iterating global reduction 2 with 3 rules applied. Total rules applied 44 place count 90 transition count 222
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 47 place count 87 transition count 214
Iterating global reduction 2 with 3 rules applied. Total rules applied 50 place count 87 transition count 214
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 53 place count 84 transition count 208
Iterating global reduction 2 with 3 rules applied. Total rules applied 56 place count 84 transition count 208
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 59 place count 81 transition count 202
Iterating global reduction 2 with 3 rules applied. Total rules applied 62 place count 81 transition count 202
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 65 place count 78 transition count 196
Iterating global reduction 2 with 3 rules applied. Total rules applied 68 place count 78 transition count 196
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 71 place count 75 transition count 190
Iterating global reduction 2 with 3 rules applied. Total rules applied 74 place count 75 transition count 190
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 75 place count 74 transition count 188
Iterating global reduction 2 with 1 rules applied. Total rules applied 76 place count 74 transition count 188
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 77 place count 73 transition count 186
Iterating global reduction 2 with 1 rules applied. Total rules applied 78 place count 73 transition count 186
Applied a total of 78 rules in 14 ms. Remains 73 /112 variables (removed 39) and now considering 186/271 (removed 85) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 73/112 places, 186/271 transitions.
[2026-05-25 10:20:45] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
// Phase 1: matrix 112 rows 73 cols
[2026-05-25 10:20:45] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[63] Max Struct:[64]
RANDOM walk for 1000000 steps (2 resets) in 916 ms. (1090 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 543 ms. (1838 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[63] Max Struct:[64]
[2026-05-25 10:20:46] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:20:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:46] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:20:46] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:20:46] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:20:46] [INFO ] [Real]Added 15 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:20:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:46] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:20:46] [INFO ] [Nat]Added 15 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:20:46] [INFO ] Computed and/alt/rep : 60/163/51 causal constraints (skipped 59 transitions) in 6 ms.
[2026-05-25 10:20:46] [INFO ] Added : 5 causal constraints over 2 iterations in 22 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[63] Max Struct:[64]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[63] Max Struct:[64]
Support contains 1 out of 73 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 186/186 transitions.
Applied a total of 0 rules in 2 ms. Remains 73 /73 variables (removed 0) and now considering 186/186 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 73/73 places, 186/186 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 186/186 transitions.
Applied a total of 0 rules in 2 ms. Remains 73 /73 variables (removed 0) and now considering 186/186 (removed 0) transitions.
[2026-05-25 10:20:47] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:20:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:47] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 10:20:47] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:20:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:47] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:20:47] [INFO ] Implicit Places using invariants and state equation in 176 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 10:20:47] [INFO ] Redundant transitions in 1 ms returned []
Running 184 sub problems to find dead transitions.
[2026-05-25 10:20:47] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:20:47] [INFO ] Invariant cache hit.
[2026-05-25 10:20:47] [INFO ] State equation strengthened by 15 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/73 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/73 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 2 (OVERLAPS) 112/185 variables, 73/76 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 15/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 5 (OVERLAPS) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
No progress, stopping.
After SMT solving in domain Real declared 185/185 variables, and 91 constraints, problems are : Problem set: 0 solved, 184 unsolved in 4109 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 184/184 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/73 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/73 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 2 (OVERLAPS) 112/185 variables, 73/76 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 15/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/185 variables, 184/275 constraints. Problems are: Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:54] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:54] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:54] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:54] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:55] [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 10:20:55] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/185 variables, 6/281 constraints. Problems are: Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:59] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/185 variables, 1/282 constraints. Problems are: Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:02] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 2 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/185 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/185 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 9 (OVERLAPS) 0/185 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 184 unsolved
No progress, stopping.
After SMT solving in domain Int declared 185/185 variables, and 283 constraints, problems are : Problem set: 0 solved, 184 unsolved in 18067 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 184/184 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 8/8 constraints]
After SMT, in 22218ms problems are : Problem set: 0 solved, 184 unsolved
Search for dead transitions found 0 dead transitions in 22219ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22479 ms. Remains : 73/73 places, 186/186 transitions.
[2026-05-25 10:21:09] [INFO ] Flatten gal took : 12 ms
[2026-05-25 10:21:09] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:21:09] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7137545886006679016.gal : 1 ms
[2026-05-25 10:21:09] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4336145299547434622.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/ReachabilityCardinality7137545886006679016.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4336145299547434622.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40001 steps (8 resets) in 120 ms. (330 steps per ms) remains 2/2 properties

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
BEST_FIRST walk for 40004 steps (8 resets) in 39 ms. (1000 steps per ms) remains 2/2 properties
Loading property file /tmp/ReachabilityCardinality4336145299547434622.prop.
BEST_FIRST walk for 40004 steps (8 resets) in 33 ms. (1176 steps per ms) remains 2/2 properties
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :31 after 923
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :923 after 103738
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :103738 after 7.00547e+07
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :7.00547e+07 after 4.05225e+11
Interrupted probabilistic random walk after 621283 steps, run timeout after 3001 ms. (steps per millisecond=207 ) properties seen :0 out of 2
Probabilistic random walk after 621283 steps, saw 386737 distinct states, run finished after 3001 ms. (steps per millisecond=207 ) properties seen :0
[2026-05-25 10:21:12] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:21:12] [INFO ] Invariant cache hit.
[2026-05-25 10:21:12] [INFO ] State equation strengthened by 15 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, 2 unsolved
At refinement iteration 1 (OVERLAPS) 47/48 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/48 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 81/129 variables, 48/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/129 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 19/148 variables, 4/53 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/148 variables, 12/65 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/148 variables, 0/65 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 6/154 variables, 2/67 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/154 variables, 2/69 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/154 variables, 0/69 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (OVERLAPS) 17/171 variables, 11/80 constraints. Problems are: Problem set: 0 solved, 2 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/171 variables, 3/83 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/171 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 14 (OVERLAPS) 7/178 variables, 4/87 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/178 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 16 (OVERLAPS) 4/182 variables, 2/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/182 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 18 (OVERLAPS) 3/185 variables, 2/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 20 (OVERLAPS) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 185/185 variables, and 91 constraints, problems are : Problem set: 0 solved, 2 unsolved in 136 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 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, 2 unsolved
At refinement iteration 1 (OVERLAPS) 47/48 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/48 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 81/129 variables, 48/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/129 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 19/148 variables, 4/53 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/148 variables, 12/65 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/148 variables, 2/67 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/148 variables, 0/67 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (OVERLAPS) 6/154 variables, 2/69 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/154 variables, 2/71 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/154 variables, 0/71 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 12 (OVERLAPS) 17/171 variables, 11/82 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/171 variables, 3/85 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/171 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 15 (OVERLAPS) 7/178 variables, 4/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/178 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 17 (OVERLAPS) 4/182 variables, 2/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/182 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 19 (OVERLAPS) 3/185 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/185 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 21 (OVERLAPS) 0/185 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 185/185 variables, and 93 constraints, problems are : Problem set: 0 solved, 2 unsolved in 179 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 317ms problems are : Problem set: 0 solved, 2 unsolved
Fused 2 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 459 ms.
Support contains 1 out of 73 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 186/186 transitions.
Applied a total of 0 rules in 2 ms. Remains 73 /73 variables (removed 0) and now considering 186/186 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 73/73 places, 186/186 transitions.
RANDOM walk for 40002 steps (8 resets) in 89 ms. (444 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 41 ms. (952 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40003 steps (8 resets) in 36 ms. (1081 steps per ms) remains 2/2 properties
Interrupted probabilistic random walk after 933707 steps, run timeout after 3001 ms. (steps per millisecond=311 ) properties seen :0 out of 2
Probabilistic random walk after 933707 steps, saw 581205 distinct states, run finished after 3001 ms. (steps per millisecond=311 ) properties seen :0
[2026-05-25 10:21:16] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:21:16] [INFO ] Invariant cache hit.
[2026-05-25 10:21:16] [INFO ] State equation strengthened by 15 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, 2 unsolved
At refinement iteration 1 (OVERLAPS) 47/48 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/48 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 81/129 variables, 48/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/129 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 19/148 variables, 4/53 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/148 variables, 12/65 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/148 variables, 0/65 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 6/154 variables, 2/67 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/154 variables, 2/69 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/154 variables, 0/69 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (OVERLAPS) 17/171 variables, 11/80 constraints. Problems are: Problem set: 0 solved, 2 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/171 variables, 3/83 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/171 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 14 (OVERLAPS) 7/178 variables, 4/87 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/178 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 16 (OVERLAPS) 4/182 variables, 2/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/182 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 18 (OVERLAPS) 3/185 variables, 2/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 20 (OVERLAPS) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 185/185 variables, and 91 constraints, problems are : Problem set: 0 solved, 2 unsolved in 179 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 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, 2 unsolved
At refinement iteration 1 (OVERLAPS) 47/48 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/48 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 81/129 variables, 48/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/129 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 19/148 variables, 4/53 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/148 variables, 12/65 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/148 variables, 2/67 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/148 variables, 0/67 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (OVERLAPS) 6/154 variables, 2/69 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/154 variables, 2/71 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/154 variables, 0/71 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 12 (OVERLAPS) 17/171 variables, 11/82 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/171 variables, 3/85 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/171 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 15 (OVERLAPS) 7/178 variables, 4/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/178 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 17 (OVERLAPS) 4/182 variables, 2/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/182 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 19 (OVERLAPS) 3/185 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/185 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 21 (OVERLAPS) 0/185 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 185/185 variables, and 93 constraints, problems are : Problem set: 0 solved, 2 unsolved in 173 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 356ms problems are : Problem set: 0 solved, 2 unsolved
Fused 2 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 438 ms.
Support contains 1 out of 73 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 186/186 transitions.
Applied a total of 0 rules in 3 ms. Remains 73 /73 variables (removed 0) and now considering 186/186 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 73/73 places, 186/186 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 73/73 places, 186/186 transitions.
Applied a total of 0 rules in 2 ms. Remains 73 /73 variables (removed 0) and now considering 186/186 (removed 0) transitions.
[2026-05-25 10:21:17] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:21:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:17] [INFO ] Implicit Places using invariants in 61 ms returned []
[2026-05-25 10:21:17] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:21:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:17] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:21:17] [INFO ] Implicit Places using invariants and state equation in 177 ms returned []
Implicit Place search using SMT with State Equation took 240 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:21:17] [INFO ] Redundant transitions in 1 ms returned []
Running 184 sub problems to find dead transitions.
[2026-05-25 10:21:17] [INFO ] Flow matrix only has 112 transitions (discarded 74 similar events)
[2026-05-25 10:21:17] [INFO ] Invariant cache hit.
[2026-05-25 10:21:17] [INFO ] State equation strengthened by 15 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/73 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/73 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 2 (OVERLAPS) 112/185 variables, 73/76 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 15/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
SDD proceeding with computation,2 properties remain. new max is 128
SDD size :4.05225e+11 after 2.075e+16
At refinement iteration 4 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 5 (OVERLAPS) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
No progress, stopping.
After SMT solving in domain Real declared 185/185 variables, and 91 constraints, problems are : Problem set: 0 solved, 184 unsolved in 4060 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 184/184 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/73 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/73 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 2 (OVERLAPS) 112/185 variables, 73/76 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 15/91 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/185 variables, 184/275 constraints. Problems are: Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:24] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:24] [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 10:21:24] [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 10:21:24] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:25] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:25] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/185 variables, 6/281 constraints. Problems are: Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:29] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/185 variables, 1/282 constraints. Problems are: Problem set: 0 solved, 184 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:32] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/185 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/185 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 184 unsolved
At refinement iteration 9 (OVERLAPS) 0/185 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 184 unsolved
No progress, stopping.
After SMT solving in domain Int declared 185/185 variables, and 283 constraints, problems are : Problem set: 0 solved, 184 unsolved in 17917 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 73/73 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 184/184 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 8/8 constraints]
After SMT, in 22042ms problems are : Problem set: 0 solved, 184 unsolved
Search for dead transitions found 0 dead transitions in 22043ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22297 ms. Remains : 73/73 places, 186/186 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 74 transitions
Reduce isomorphic transitions removed 74 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 73 transition count 105
Reduce places removed 7 places and 0 transitions.
Iterating post reduction 1 with 7 rules applied. Total rules applied 88 place count 66 transition count 105
Performed 12 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 12 Pre rules applied. Total rules applied 88 place count 66 transition count 93
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 112 place count 54 transition count 93
Performed 14 Post agglomeration using F-continuation condition.Transition count delta: 14
Deduced a syphon composed of 14 places in 0 ms
Reduce places removed 14 places and 0 transitions.
Iterating global reduction 2 with 28 rules applied. Total rules applied 140 place count 40 transition count 79
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 146 place count 34 transition count 67
Iterating global reduction 2 with 6 rules applied. Total rules applied 152 place count 34 transition count 67
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 158 place count 28 transition count 55
Iterating global reduction 2 with 6 rules applied. Total rules applied 164 place count 28 transition count 55
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 170 place count 22 transition count 43
Iterating global reduction 2 with 6 rules applied. Total rules applied 176 place count 22 transition count 43
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 2 with 6 rules applied. Total rules applied 182 place count 22 transition count 37
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -1
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 186 place count 20 transition count 38
Applied a total of 186 rules in 13 ms. Remains 20 /73 variables (removed 53) and now considering 38/186 (removed 148) transitions.
Running SMT prover for 2 properties.
// Phase 1: matrix 38 rows 20 cols
[2026-05-25 10:21:39] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:21:39] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:21:39] [INFO ] After 35ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:2
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:21:39] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:21:39] [INFO ] After 11ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :2
[2026-05-25 10:21:39] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:21:39] [INFO ] After 3ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :2
TRAPS : Iteration 0
[2026-05-25 10:21:39] [INFO ] After 7ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :2
[2026-05-25 10:21:39] [INFO ] After 44ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :2
[2026-05-25 10:21:39] [INFO ] Flatten gal took : 12 ms
[2026-05-25 10:21:39] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:21:39] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1688131815193501064.gal : 1 ms
[2026-05-25 10:21:39] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14394706160233555835.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/ReachabilityCardinality1688131815193501064.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14394706160233555835.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/ReachabilityCardinality14394706160233555835.prop.
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,2 properties remain. new max is 128
SDD size :315 after 11915
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :11915 after 5.28021e+06
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :5.28021e+06 after 5.2795e+09
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :5.2795e+09 after 2.66698e+10
SDD proceeding with computation,2 properties remain. new max is 2048
SDD size :2.66698e+10 after 6.94087e+10
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :2.075e+16 after 5.82585e+20
Detected timeout of ITS tools.
[2026-05-25 10:21:54] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:21:54] [INFO ] Applying decomposition
[2026-05-25 10:21:54] [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/graph18182867197682652524.txt' '-o' '/tmp/graph18182867197682652524.bin' '-w' '/tmp/graph18182867197682652524.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph18182867197682652524.bin' '-l' '-1' '-v' '-w' '/tmp/graph18182867197682652524.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:21:54] [INFO ] Decomposing Gal with order
[2026-05-25 10:21:54] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:21:54] [INFO ] Removed a total of 38 redundant transitions.
[2026-05-25 10:21:54] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:21:54] [INFO ] Fuse similar labels procedure discarded/fused a total of 8 labels/synchronizations in 0 ms.
[2026-05-25 10:21:54] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1807648936121533131.gal : 1 ms
[2026-05-25 10:21:54] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality618225010257096330.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/ReachabilityCardinality1807648936121533131.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality618225010257096330.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/ReachabilityCardinality618225010257096330.prop.
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,2 properties remain. new max is 128
SDD size :315 after 40600
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :40600 after 7.228e+08
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :7.228e+08 after 3.41113e+09
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :3.41113e+09 after 8.74829e+09
SDD proceeding with computation,2 properties remain. new max is 2048
SDD size :8.74829e+09 after 1.94226e+10
Detected timeout of ITS tools.
[2026-05-25 10:21:59] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:21:59] [INFO ] Applying decomposition
[2026-05-25 10:21:59] [INFO ] Flatten gal took : 5 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/graph6117447169757513246.txt' '-o' '/tmp/graph6117447169757513246.bin' '-w' '/tmp/graph6117447169757513246.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph6117447169757513246.bin' '-l' '-1' '-v' '-w' '/tmp/graph6117447169757513246.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:21:59] [INFO ] Decomposing Gal with order
[2026-05-25 10:21:59] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:21:59] [INFO ] Removed a total of 314 redundant transitions.
[2026-05-25 10:21:59] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:21:59] [INFO ] Fuse similar labels procedure discarded/fused a total of 89 labels/synchronizations in 2 ms.
[2026-05-25 10:21:59] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12602380886827672365.gal : 1 ms
[2026-05-25 10:21:59] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14649952497806641623.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/ReachabilityCardinality12602380886827672365.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14649952497806641623.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/ReachabilityCardinality14649952497806641623.prop.
SDD proceeding with computation,2 properties remain. new max is 4096
SDD size :1.94226e+10 after 4.07712e+10
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30232 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:[63] Max Struct:[64]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-09 in 84843 ms.
Starting property specific reduction for FunctionPointer-PT-b064-UpperBounds-11
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:22:09] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:22:09] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10048 steps (2 resets) in 8 ms. (1116 steps per ms)
BEST_FIRST walk for 10001 steps (3 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 10:22:09] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:22:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:22:09] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:22:09] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:22:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:22:09] [INFO ] [Nat]Added 36 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:22:09] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:22:10] [INFO ] Added : 2 causal constraints over 1 iterations in 29 ms. Result :sat
Minimization took 29 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:[6] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 103 are kept as prefixes of interest. Removing 9 places using SCC suffix rule.0 ms
Discarding 9 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 0 with 16 rules applied. Total rules applied 17 place count 103 transition count 255
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 21 place count 99 transition count 247
Iterating global reduction 1 with 4 rules applied. Total rules applied 25 place count 99 transition count 247
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 27 place count 99 transition count 245
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 30 place count 96 transition count 233
Iterating global reduction 2 with 3 rules applied. Total rules applied 33 place count 96 transition count 233
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 36 place count 93 transition count 227
Iterating global reduction 2 with 3 rules applied. Total rules applied 39 place count 93 transition count 227
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 42 place count 90 transition count 219
Iterating global reduction 2 with 3 rules applied. Total rules applied 45 place count 90 transition count 219
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 48 place count 87 transition count 213
Iterating global reduction 2 with 3 rules applied. Total rules applied 51 place count 87 transition count 213
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 54 place count 84 transition count 207
Iterating global reduction 2 with 3 rules applied. Total rules applied 57 place count 84 transition count 207
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 60 place count 81 transition count 201
Iterating global reduction 2 with 3 rules applied. Total rules applied 63 place count 81 transition count 201
Discarding 3 places :
Symmetric choice reduction at 2 with 3 rule applications. Total rules 66 place count 78 transition count 195
Iterating global reduction 2 with 3 rules applied. Total rules applied 69 place count 78 transition count 195
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 70 place count 77 transition count 193
Iterating global reduction 2 with 1 rules applied. Total rules applied 71 place count 77 transition count 193
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 72 place count 76 transition count 191
Iterating global reduction 2 with 1 rules applied. Total rules applied 73 place count 76 transition count 191
Applied a total of 73 rules in 14 ms. Remains 76 /112 variables (removed 36) and now considering 191/271 (removed 80) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 76/112 places, 191/271 transitions.
[2026-05-25 10:22:10] [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 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[9]
Current structural bounds on expressions (after cover walk) : Max Seen:[9] Max Struct:[+inf]
[2026-05-25 10:22:10] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
// Phase 1: matrix 117 rows 76 cols
[2026-05-25 10:22:10] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[9] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1009 ms. (990 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 582 ms. (1715 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[70] Max Struct:[+inf]
[2026-05-25 10:22:11] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:11] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:11] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:22:11] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:11] [INFO ] [Real]Added 18 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:22:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:11] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:11] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:22:11] [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 10:22:11] [INFO ] Deduced a trap composed of 13 places in 65 ms of which 5 ms to minimize.
[2026-05-25 10:22:11] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 81 ms
[2026-05-25 10:22:11] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 8 ms.
[2026-05-25 10:22:12] [INFO ] Added : 6 causal constraints over 3 iterations in 38 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[70] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[70] 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 2 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 2 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 2 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 10:22:12] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:12] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-05-25 10:22:12] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:12] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:12] [INFO ] Implicit Places using invariants and state equation in 164 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 10:22:12] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:22:12] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:12] [INFO ] Invariant cache hit.
[2026-05-25 10:22:12] [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 2193 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 10:22:17] [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 10:22:17] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:17] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:18] [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) 0/193 variables, 4/290 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 10:22:21] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 1/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/193 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 8 (OVERLAPS) 0/193 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 291 constraints, problems are : Problem set: 0 solved, 189 unsolved in 16614 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: 5/5 constraints]
After SMT, in 18849ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 18849ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19091 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:22:31] [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 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[8]
Current structural bounds on expressions (after cover walk) : Max Seen:[70] Max Struct:[+inf]
[2026-05-25 10:22:31] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:31] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[70] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 968 ms. (1031 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 576 ms. (1733 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[70] Max Struct:[+inf]
[2026-05-25 10:22:32] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:32] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:32] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:22:32] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:32] [INFO ] [Real]Added 18 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:22:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:32] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:32] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:22:32] [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 10:22:33] [INFO ] Deduced a trap composed of 13 places in 58 ms of which 5 ms to minimize.
[2026-05-25 10:22:33] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 72 ms
[2026-05-25 10:22:33] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 8 ms.
[2026-05-25 10:22:33] [INFO ] Added : 6 causal constraints over 3 iterations in 35 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[70] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[70] 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 2 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 3 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 2 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 10:22:33] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:33] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 10:22:33] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:33] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:33] [INFO ] Implicit Places using invariants and state equation in 169 ms returned []
Implicit Place search using SMT with State Equation took 240 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:22:33] [INFO ] Redundant transitions in 1 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:22:33] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:33] [INFO ] Invariant cache hit.
[2026-05-25 10:22:33] [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 2146 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 10:22:38] [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 10:22:38] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:38] [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 10:22:39] [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) 0/193 variables, 4/290 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 10:22:42] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 1/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/193 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 8 (OVERLAPS) 0/193 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 291 constraints, problems are : Problem set: 0 solved, 189 unsolved in 17401 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: 5/5 constraints]
After SMT, in 19589ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 19589ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19841 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:22:52] [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 36 ms. (steps per millisecond=277 ) properties (out of 1) seen :[7]
Current structural bounds on expressions (after cover walk) : Max Seen:[70] Max Struct:[+inf]
[2026-05-25 10:22:53] [INFO ] Flatten gal took : 14 ms
[2026-05-25 10:22:53] [INFO ] Flatten gal took : 8 ms
[2026-05-25 10:22:53] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality312413258599562311.gal : 1 ms
[2026-05-25 10:22:53] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6132432396525344080.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/ReachabilityCardinality312413258599562311.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6132432396525344080.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...327
RANDOM walk for 40004 steps (8 resets) in 97 ms. (408 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality6132432396525344080.prop.
BEST_FIRST walk for 40003 steps (8 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 923
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :923 after 103738
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :103738 after 7.00547e+07
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :7.00547e+07 after 4.05225e+11
Interrupted probabilistic random walk after 2031767 steps, run timeout after 3001 ms. (steps per millisecond=677 ) properties seen :0 out of 1
Probabilistic random walk after 2031767 steps, saw 1264673 distinct states, run finished after 3001 ms. (steps per millisecond=677 ) properties seen :0
[2026-05-25 10:22:56] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:56] [INFO ] Invariant cache hit.
[2026-05-25 10:22:56] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 94 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:56] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:56] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:56] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:56] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/175 variables, 4/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:56] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:56] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 2/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/186 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/190 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/190 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/193 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/193 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/193 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 308 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 405ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 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.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 76/76 places, 191/191 transitions.
RANDOM walk for 40004 steps (8 resets) in 74 ms. (533 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1776903 steps, run timeout after 3001 ms. (steps per millisecond=592 ) properties seen :0 out of 1
Probabilistic random walk after 1776903 steps, saw 1106038 distinct states, run finished after 3001 ms. (steps per millisecond=592 ) properties seen :0
[2026-05-25 10:22:59] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:59] [INFO ] Invariant cache hit.
[2026-05-25 10:22:59] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 93 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 64/69 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/175 variables, 4/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:59] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 2/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/186 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/190 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/190 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/193 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/193 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/193 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 287 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 384ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 2 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 2 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 10:22:59] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:22:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:00] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 10:23:00] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:23:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:00] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:23:00] [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 10:23:00] [INFO ] Redundant transitions in 1 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:23:00] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:23:00] [INFO ] Invariant cache hit.
[2026-05-25 10:23:00] [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 2189 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
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :4.05225e+11 after 2.075e+16
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 10:23:05] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:05] [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 10:23:05] [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 10:23:06] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 4/290 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 10:23:09] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/193 variables, 1/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/193 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 8 (OVERLAPS) 0/193 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 291 constraints, problems are : Problem set: 0 solved, 189 unsolved in 17352 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: 5/5 constraints]
After SMT, in 19582ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 19583ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19829 ms. Remains : 76/76 places, 191/191 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 74 transitions
Reduce isomorphic transitions removed 74 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 76 transition count 110
Reduce places removed 7 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 8 rules applied. Total rules applied 89 place count 69 transition count 109
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 90 place count 68 transition count 109
Performed 12 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 12 Pre rules applied. Total rules applied 90 place count 68 transition count 97
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 3 with 24 rules applied. Total rules applied 114 place count 56 transition count 97
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 3 with 30 rules applied. Total rules applied 144 place count 41 transition count 82
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 151 place count 34 transition count 68
Iterating global reduction 3 with 7 rules applied. Total rules applied 158 place count 34 transition count 68
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 165 place count 27 transition count 54
Iterating global reduction 3 with 7 rules applied. Total rules applied 172 place count 27 transition count 54
Discarding 7 places :
Symmetric choice reduction at 3 with 7 rule applications. Total rules 179 place count 20 transition count 40
Iterating global reduction 3 with 7 rules applied. Total rules applied 186 place count 20 transition count 40
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 3 with 7 rules applied. Total rules applied 193 place count 20 transition count 33
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 1 Pre rules applied. Total rules applied 193 place count 20 transition count 32
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 195 place count 19 transition count 32
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 4 with 2 rules applied. Total rules applied 197 place count 18 transition count 32
Applied a total of 197 rules in 19 ms. Remains 18 /76 variables (removed 58) and now considering 32/191 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 32 rows 18 cols
[2026-05-25 10:23:19] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:23:19] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:19] [INFO ] After 31ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:23:19] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:23:19] [INFO ] After 9ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:23:19] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:23:19] [INFO ] After 1ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:23:19] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:23:19] [INFO ] After 39ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:23:19] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:23:19] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:23:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15241619684504441501.gal : 0 ms
[2026-05-25 10:23:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality17845147425591346776.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/ReachabilityCardinality15241619684504441501.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality17845147425591346776.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/ReachabilityCardinality17845147425591346776.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 35107
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :35107 after 6.2298e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.2298e+06 after 1.79901e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.79901e+07 after 4.1465e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.1465e+07 after 8.8369e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :8.8369e+07 after 1.82131e+08
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :2.075e+16 after 5.82585e+20
Detected timeout of ITS tools.
[2026-05-25 10:23:34] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:23:34] [INFO ] Applying decomposition
[2026-05-25 10:23:34] [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/graph12161593889825624651.txt' '-o' '/tmp/graph12161593889825624651.bin' '-w' '/tmp/graph12161593889825624651.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12161593889825624651.bin' '-l' '-1' '-v' '-w' '/tmp/graph12161593889825624651.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:23:34] [INFO ] Decomposing Gal with order
[2026-05-25 10:23:34] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:23:34] [INFO ] Removed a total of 23 redundant transitions.
[2026-05-25 10:23:34] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:23:34] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 10:23:34] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2585051265765038750.gal : 0 ms
[2026-05-25 10:23:34] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15108743620492383649.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/ReachabilityCardinality2585051265765038750.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15108743620492383649.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/ReachabilityCardinality15108743620492383649.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 470467
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :470467 after 5.04647e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :5.04647e+06 after 1.45645e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.45645e+07 after 3.34177e+07
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :3.34177e+07 after 7.09409e+07
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :7.09409e+07 after 1.45987e+08
Detected timeout of ITS tools.
[2026-05-25 10:23:43] [INFO ] Flatten gal took : 6 ms
[2026-05-25 10:23:43] [INFO ] Applying decomposition
[2026-05-25 10:23:43] [INFO ] Flatten gal took : 5 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/graph10464227196169013580.txt' '-o' '/tmp/graph10464227196169013580.bin' '-w' '/tmp/graph10464227196169013580.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10464227196169013580.bin' '-l' '-1' '-v' '-w' '/tmp/graph10464227196169013580.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:23:43] [INFO ] Decomposing Gal with order
[2026-05-25 10:23:43] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:23:43] [INFO ] Removed a total of 322 redundant transitions.
[2026-05-25 10:23:43] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:23:43] [INFO ] Fuse similar labels procedure discarded/fused a total of 88 labels/synchronizations in 2 ms.
[2026-05-25 10:23:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality261190603987341365.gal : 2 ms
[2026-05-25 10:23:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13402965936573425748.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/ReachabilityCardinality261190603987341365.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13402965936573425748.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/ReachabilityCardinality13402965936573425748.prop.
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :1.45987e+08 after 2.9608e+08
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30189 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:[70] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-11 in 100234 ms.
Starting property specific reduction for FunctionPointer-PT-b064-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 10:23:50] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:23:50] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 13 ms. (714 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:23:50] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:23:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:23:50] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:23:50] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:23:50] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:23:50] [INFO ] [Real]Added 36 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:23:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:23:50] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:50] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:23:50] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:23:50] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:23:50] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:23:50] [INFO ] Added : 14 causal constraints over 4 iterations in 53 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 100 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 21 transitions
Reduce isomorphic transitions removed 21 transitions.
Iterating post reduction 0 with 21 rules applied. Total rules applied 22 place count 100 transition count 250
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 26 place count 96 transition count 242
Iterating global reduction 1 with 4 rules applied. Total rules applied 30 place count 96 transition count 242
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 32 place count 96 transition count 240
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 34 place count 94 transition count 232
Iterating global reduction 2 with 2 rules applied. Total rules applied 36 place count 94 transition count 232
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 38 place count 92 transition count 228
Iterating global reduction 2 with 2 rules applied. Total rules applied 40 place count 92 transition count 228
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 42 place count 90 transition count 224
Iterating global reduction 2 with 2 rules applied. Total rules applied 44 place count 90 transition count 224
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 46 place count 88 transition count 220
Iterating global reduction 2 with 2 rules applied. Total rules applied 48 place count 88 transition count 220
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 50 place count 86 transition count 216
Iterating global reduction 2 with 2 rules applied. Total rules applied 52 place count 86 transition count 216
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 54 place count 84 transition count 212
Iterating global reduction 2 with 2 rules applied. Total rules applied 56 place count 84 transition count 212
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 58 place count 82 transition count 208
Iterating global reduction 2 with 2 rules applied. Total rules applied 60 place count 82 transition count 208
Applied a total of 60 rules in 15 ms. Remains 82 /112 variables (removed 30) and now considering 208/271 (removed 63) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 82/112 places, 208/271 transitions.
[2026-05-25 10:23:50] [INFO ] Flow matrix only has 128 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, 32=1, 34=1, 63=1, 94=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {26=1, 60=1, 91=1, 123=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 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 10:23:50] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
// Phase 1: matrix 128 rows 82 cols
[2026-05-25 10:23:50] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1002 ms. (997 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 709 ms. (1408 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[229] Max Struct:[+inf]
[2026-05-25 10:23:52] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:23:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:52] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:52] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:23:52] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:23:52] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:23:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:52] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:23:52] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:52] [INFO ] Deduced a trap composed of 14 places in 60 ms of which 5 ms to minimize.
[2026-05-25 10:23:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 10:23:52] [INFO ] Computed and/alt/rep : 60/196/54 causal constraints (skipped 72 transitions) in 9 ms.
[2026-05-25 10:23:52] [INFO ] Added : 14 causal constraints over 4 iterations in 46 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[229] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[229] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 208/208 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
[2026-05-25 10:23:52] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:23:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:52] [INFO ] Implicit Places using invariants in 61 ms returned []
[2026-05-25 10:23:52] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:23:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:52] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:23:52] [INFO ] Implicit Places using invariants and state equation in 189 ms returned []
Implicit Place search using SMT with State Equation took 252 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:23:52] [INFO ] Redundant transitions in 1 ms returned []
Running 206 sub problems to find dead transitions.
[2026-05-25 10:23:52] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:23:52] [INFO ] Invariant cache hit.
[2026-05-25 10:23:52] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 5 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 206 unsolved in 4677 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 206/309 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:00] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:00] [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 10:24:00] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:00] [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 10:24:01] [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) 0/210 variables, 5/314 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/210 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:09] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/210 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/210 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 9 (OVERLAPS) 0/210 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Int declared 210/210 variables, and 315 constraints, problems are : Problem set: 0 solved, 206 unsolved in 23125 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 27853ms problems are : Problem set: 0 solved, 206 unsolved
Search for dead transitions found 0 dead transitions in 27853ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28118 ms. Remains : 82/82 places, 208/208 transitions.
[2026-05-25 10:24:20] [INFO ] Flow matrix only has 128 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, 32=1, 34=1, 63=1, 94=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 60=1, 91=1, 123=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 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[229] Max Struct:[+inf]
[2026-05-25 10:24:20] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:20] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[229] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1038 ms. (962 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 691 ms. (1445 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[229] Max Struct:[+inf]
[2026-05-25 10:24:22] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:24:22] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:24:22] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:24:22] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:24:22] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:24:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:24:22] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:24:22] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:24:22] [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 10:24:22] [INFO ] Deduced a trap composed of 14 places in 67 ms of which 6 ms to minimize.
[2026-05-25 10:24:22] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
[2026-05-25 10:24:22] [INFO ] Computed and/alt/rep : 60/196/54 causal constraints (skipped 72 transitions) in 6 ms.
[2026-05-25 10:24:22] [INFO ] Added : 14 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[229] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[229] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 208/208 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 4 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
[2026-05-25 10:24:22] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:22] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 10:24:22] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:22] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:24:22] [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 10:24:22] [INFO ] Redundant transitions in 1 ms returned []
Running 206 sub problems to find dead transitions.
[2026-05-25 10:24:22] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:22] [INFO ] Invariant cache hit.
[2026-05-25 10:24:22] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 5 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 206 unsolved in 4637 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 206/309 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:30] [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 10:24:30] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:30] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:31] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:31] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/210 variables, 5/314 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/210 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:40] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 1 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/210 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/210 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 9 (OVERLAPS) 0/210 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Int declared 210/210 variables, and 315 constraints, problems are : Problem set: 0 solved, 206 unsolved in 23216 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 27911ms problems are : Problem set: 0 solved, 206 unsolved
Search for dead transitions found 0 dead transitions in 27912ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28167 ms. Remains : 82/82 places, 208/208 transitions.
[2026-05-25 10:24:50] [INFO ] Flow matrix only has 128 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, 32=1, 34=1, 63=1, 94=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 60=1, 91=1, 123=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[229] Max Struct:[+inf]
[2026-05-25 10:24:50] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:24:50] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:24:50] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality18045161374650113338.gal : 2 ms
[2026-05-25 10:24:50] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14510035749776845011.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/ReachabilityCardinality18045161374650113338.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14510035749776845011.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40001 steps (8 resets) in 67 ms. (588 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 38 ms. (1025 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
Loading property file /tmp/ReachabilityCardinality14510035749776845011.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 1047
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1047 after 160832
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :160832 after 2.00155e+08
Interrupted probabilistic random walk after 1743068 steps, run timeout after 3001 ms. (steps per millisecond=580 ) properties seen :0 out of 1
Probabilistic random walk after 1743068 steps, saw 1097030 distinct states, run finished after 3001 ms. (steps per millisecond=580 ) properties seen :0
[2026-05-25 10:24:53] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:53] [INFO ] Invariant cache hit.
[2026-05-25 10:24:53] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/85 variables, 2/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/85 variables, 4/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 100/185 variables, 58/69 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/185 variables, 18/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/191 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/191 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 14/205 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/205 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/209 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/209 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 1/210 variables, 1/103 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) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 164 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/85 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 4/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/85 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/185 variables, 58/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 18/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/185 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/191 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/191 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/205 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:54] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/205 variables, 1/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/205 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/209 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/209 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 1/210 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/210 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/210 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 210/210 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 163 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 333ms problems are : Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
Parikh walk visited 0 properties in 372 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 208/208 transitions.
SDD size :2.00155e+08 after 3.8152e+12
RANDOM walk for 40004 steps (8 resets) in 84 ms. (470 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1755438 steps, run timeout after 3027 ms. (steps per millisecond=579 ) properties seen :0 out of 1
Probabilistic random walk after 1755438 steps, saw 1105524 distinct states, run finished after 3027 ms. (steps per millisecond=579 ) properties seen :0
[2026-05-25 10:24:57] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:57] [INFO ] Invariant cache hit.
[2026-05-25 10:24:57] [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) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/85 variables, 2/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/85 variables, 4/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 100/185 variables, 58/69 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/185 variables, 18/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/191 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/191 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 14/205 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/205 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/209 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/209 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 1/210 variables, 1/103 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) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 79 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/85 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 4/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/85 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/185 variables, 58/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 18/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/185 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/191 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/191 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/205 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:57] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/205 variables, 1/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/205 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/209 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/209 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 1/210 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/210 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/210 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 210/210 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 166 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 248ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 377 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 208/208 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
[2026-05-25 10:24:58] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:58] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 10:24:58] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:58] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:24:58] [INFO ] Implicit Places using invariants and state equation in 167 ms returned []
Implicit Place search using SMT with State Equation took 240 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:24:58] [INFO ] Redundant transitions in 1 ms returned []
Running 206 sub problems to find dead transitions.
[2026-05-25 10:24:58] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 10:24:58] [INFO ] Invariant cache hit.
[2026-05-25 10:24:58] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 5 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 206 unsolved in 4622 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 206/309 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:06] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:06] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:06] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:06] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:07] [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) 0/210 variables, 5/314 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/210 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 206 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3.8152e+12 after 1.7393e+18
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:15] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/210 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/210 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 9 (OVERLAPS) 0/210 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Int declared 210/210 variables, and 315 constraints, problems are : Problem set: 0 solved, 206 unsolved in 22827 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 27499ms problems are : Problem set: 0 solved, 206 unsolved
Search for dead transitions found 0 dead transitions in 27500ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27748 ms. Remains : 82/82 places, 208/208 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 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 87 rules applied. Total rules applied 87 place count 82 transition count 121
Reduce places removed 7 places and 0 transitions.
Iterating post reduction 1 with 7 rules applied. Total rules applied 94 place count 75 transition count 121
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 94 place count 75 transition count 105
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 126 place count 59 transition count 105
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 156 place count 44 transition count 90
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 163 place count 37 transition count 76
Iterating global reduction 2 with 7 rules applied. Total rules applied 170 place count 37 transition count 76
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 177 place count 30 transition count 62
Iterating global reduction 2 with 7 rules applied. Total rules applied 184 place count 30 transition count 62
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 191 place count 23 transition count 48
Iterating global reduction 2 with 7 rules applied. Total rules applied 198 place count 23 transition count 48
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 205 place count 23 transition count 41
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 205 place count 23 transition count 40
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 207 place count 22 transition count 40
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 211 place count 20 transition count 40
Applied a total of 211 rules in 13 ms. Remains 20 /82 variables (removed 62) and now considering 40/208 (removed 168) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 40 rows 20 cols
[2026-05-25 10:25:26] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:25:26] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:25:26] [INFO ] After 10ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:25:26] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:25:26] [INFO ] After 3ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:25:26] [INFO ] After 33ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:25:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:25:26] [INFO ] After 10ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:25:26] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:25:26] [INFO ] After 5ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:25:26] [INFO ] After 43ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:25:26] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:25:26] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:25:26] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4199758860609114328.gal : 0 ms
[2026-05-25 10:25:26] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12545831824516537183.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/ReachabilityCardinality4199758860609114328.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12545831824516537183.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/ReachabilityCardinality12545831824516537183.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 74116
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :74116 after 2.14714e+08
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.14714e+08 after 1.77591e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.77591e+09 after 9.4111e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :9.4111e+09 after 4.27012e+10
Detected timeout of ITS tools.
[2026-05-25 10:25:41] [INFO ] Flatten gal took : 19 ms
[2026-05-25 10:25:41] [INFO ] Applying decomposition
[2026-05-25 10:25:41] [INFO ] Flatten gal took : 14 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/graph10513261439223930285.txt' '-o' '/tmp/graph10513261439223930285.bin' '-w' '/tmp/graph10513261439223930285.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10513261439223930285.bin' '-l' '-1' '-v' '-w' '/tmp/graph10513261439223930285.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:25:41] [INFO ] Decomposing Gal with order
[2026-05-25 10:25:41] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:25:41] [INFO ] Removed a total of 355 redundant transitions.
[2026-05-25 10:25:41] [INFO ] Flatten gal took : 13 ms
[2026-05-25 10:25:41] [INFO ] Fuse similar labels procedure discarded/fused a total of 114 labels/synchronizations in 2 ms.
[2026-05-25 10:25:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8827008384911344560.gal : 2 ms
[2026-05-25 10:25:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6267122031253835376.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/ReachabilityCardinality8827008384911344560.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6267122031253835376.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/ReachabilityCardinality6267122031253835376.prop.
Detected timeout of ITS tools.
[2026-05-25 10:25:41] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:25:41] [INFO ] Applying decomposition
[2026-05-25 10:25:41] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph11278470464458412716.txt' '-o' '/tmp/graph11278470464458412716.bin' '-w' '/tmp/graph11278470464458412716.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph11278470464458412716.bin' '-l' '-1' '-v' '-w' '/tmp/graph11278470464458412716.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:25:41] [INFO ] Decomposing Gal with order
[2026-05-25 10:25:41] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:25:41] [INFO ] Removed a total of 43 redundant transitions.
[2026-05-25 10:25:41] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:25:41] [INFO ] Fuse similar labels procedure discarded/fused a total of 10 labels/synchronizations in 0 ms.
[2026-05-25 10:25:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16902714737064682519.gal : 1 ms
[2026-05-25 10:25:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15804774330734891321.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/ReachabilityCardinality16902714737064682519.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15804774330734891321.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/ReachabilityCardinality15804774330734891321.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 6
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :6 after 16
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :16 after 34
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :34 after 68
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :68 after 384
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :384 after 653636
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :653636 after 657668
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :657668 after 657668
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :657668 after 657668
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :657668 after 657668
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :657668 after 657668
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :9.79721e+12 after 9.93571e+12
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30165 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:[229] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-12 in 126291 ms.
Starting property specific reduction for FunctionPointer-PT-b064-UpperBounds-13
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:25:56] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:25:56] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 10 ms. (909 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:[9] Max Struct:[+inf]
[2026-05-25 10:25:56] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:25:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 10:25:56] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:25:56] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:25:56] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:25:56] [INFO ] [Real]Added 36 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:25:56] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:25:56] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:25:56] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:25:56] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:25:56] [INFO ] Added : 5 causal constraints over 3 iterations in 63 ms. Result :sat
Minimization took 30 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[9] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[9] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 100 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 21 transitions
Reduce isomorphic transitions removed 21 transitions.
Iterating post reduction 0 with 21 rules applied. Total rules applied 22 place count 100 transition count 250
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 25 place count 97 transition count 244
Iterating global reduction 1 with 3 rules applied. Total rules applied 28 place count 97 transition count 244
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 31 place count 94 transition count 232
Iterating global reduction 1 with 3 rules applied. Total rules applied 34 place count 94 transition count 232
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 37 place count 91 transition count 226
Iterating global reduction 1 with 3 rules applied. Total rules applied 40 place count 91 transition count 226
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 43 place count 88 transition count 218
Iterating global reduction 1 with 3 rules applied. Total rules applied 46 place count 88 transition count 218
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 49 place count 85 transition count 212
Iterating global reduction 1 with 3 rules applied. Total rules applied 52 place count 85 transition count 212
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 55 place count 82 transition count 206
Iterating global reduction 1 with 3 rules applied. Total rules applied 58 place count 82 transition count 206
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 61 place count 79 transition count 200
Iterating global reduction 1 with 3 rules applied. Total rules applied 64 place count 79 transition count 200
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 67 place count 76 transition count 194
Iterating global reduction 1 with 3 rules applied. Total rules applied 70 place count 76 transition count 194
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 71 place count 75 transition count 192
Iterating global reduction 1 with 1 rules applied. Total rules applied 72 place count 75 transition count 192
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 73 place count 74 transition count 190
Iterating global reduction 1 with 1 rules applied. Total rules applied 74 place count 74 transition count 190
Applied a total of 74 rules in 14 ms. Remains 74 /112 variables (removed 38) and now considering 190/271 (removed 81) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 74/112 places, 190/271 transitions.
[2026-05-25 10:25:56] [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 {26=1, 53=1, 98=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[9] Max Struct:[+inf]
[2026-05-25 10:25:56] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
// Phase 1: matrix 114 rows 74 cols
[2026-05-25 10:25:56] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[9] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 951 ms. (1050 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 553 ms. (1805 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1139] Max Struct:[+inf]
[2026-05-25 10:25:58] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 10:25:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:25:58] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:25:58] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:25:58] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:25:58] [INFO ] [Real]Added 15 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:25:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:25:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:25:58] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:25:58] [INFO ] [Nat]Added 15 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:58] [INFO ] Deduced a trap composed of 13 places in 74 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:58] [INFO ] Deduced a trap composed of 20 places in 68 ms of which 4 ms to minimize.
[2026-05-25 10:25:58] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 162 ms
[2026-05-25 10:25:58] [INFO ] Computed and/alt/rep : 60/163/51 causal constraints (skipped 61 transitions) in 7 ms.
[2026-05-25 10:25:58] [INFO ] Added : 18 causal constraints over 4 iterations in 41 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1139] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1139] 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 4 ms. Remains 74 /74 variables (removed 0) and now considering 190/190 (removed 0) transitions.
[2026-05-25 10:26:00] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 10:26:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:01] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 10:26:01] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 10:26:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:01] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:26:01] [INFO ] Implicit Places using invariants and state equation in 182 ms returned []
Implicit Place search using SMT with State Equation took 255 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:26:01] [INFO ] Redundant transitions in 1 ms returned []
Running 188 sub problems to find dead transitions.
[2026-05-25 10:26:01] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 10:26:01] [INFO ] Invariant cache hit.
[2026-05-25 10:26:01] [INFO ] State equation strengthened by 15 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/74 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
All remaining problems are real, not stopping.
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 3751 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 10:26:08] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:08] [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 10:26:08] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/188 variables, 3/283 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/188 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 7 (OVERLAPS) 0/188 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Int declared 188/188 variables, and 283 constraints, problems are : Problem set: 0 solved, 188 unsolved in 17764 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: 3/3 constraints]
After SMT, in 21557ms problems are : Problem set: 0 solved, 188 unsolved
Search for dead transitions found 0 dead transitions in 21558ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21828 ms. Remains : 74/74 places, 190/190 transitions.
[2026-05-25 10:26:22] [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 {26=1, 53=1, 98=1, 113=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 :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 10:26:22] [INFO ] Flow matrix only has 114 transitions (discarded 76 similar events)
[2026-05-25 10:26:22] [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 951 ms. (1050 steps per ms)
FORMULA FunctionPointer-PT-b064-UpperBounds-13 +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 10:26:23] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:26:23] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:26:23] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8011791877042959492.gal : 1 ms
[2026-05-25 10:26:23] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality16991351052732715497.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/ReachabilityCardinality8011791877042959492.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality16991351052732715497.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-b064-UpperBounds-13 in 27617 ms.
Starting property specific reduction for FunctionPointer-PT-b064-UpperBounds-15
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:26:23] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
// Phase 1: matrix 179 rows 112 cols
[2026-05-25 10:26:23] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 18 ms. (526 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:[0] Max Struct:[+inf]
[2026-05-25 10:26:23] [INFO ] Flow matrix only has 179 transitions (discarded 92 similar events)
[2026-05-25 10:26:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:26:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:24] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:26:24] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:26:24] [INFO ] State equation strengthened by 36 read => feed constraints.
[2026-05-25 10:26:24] [INFO ] [Real]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:26:24] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:26:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:24] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:26:24] [INFO ] [Nat]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:26:24] [INFO ] [Nat]Added 36 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:26:24] [INFO ] Computed and/alt/rep : 44/117/37 causal constraints (skipped 140 transitions) in 10 ms.
[2026-05-25 10:26:24] [INFO ] Added : 5 causal constraints over 3 iterations in 45 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 112/112 places, 271/271 transitions.
Graph (complete) has 462 edges and 112 vertex of which 100 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 21 transitions
Reduce isomorphic transitions removed 21 transitions.
Iterating post reduction 0 with 21 rules applied. Total rules applied 22 place count 100 transition count 250
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 25 place count 97 transition count 244
Iterating global reduction 1 with 3 rules applied. Total rules applied 28 place count 97 transition count 244
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 30 place count 97 transition count 242
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 32 place count 95 transition count 234
Iterating global reduction 2 with 2 rules applied. Total rules applied 34 place count 95 transition count 234
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 36 place count 93 transition count 230
Iterating global reduction 2 with 2 rules applied. Total rules applied 38 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 40 place count 91 transition count 224
Iterating global reduction 2 with 2 rules applied. Total rules applied 42 place count 91 transition count 224
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 44 place count 89 transition count 220
Iterating global reduction 2 with 2 rules applied. Total rules applied 46 place count 89 transition count 220
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 48 place count 87 transition count 216
Iterating global reduction 2 with 2 rules applied. Total rules applied 50 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 52 place count 85 transition count 212
Iterating global reduction 2 with 2 rules applied. Total rules applied 54 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 56 place count 83 transition count 208
Iterating global reduction 2 with 2 rules applied. Total rules applied 58 place count 83 transition count 208
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 59 place count 82 transition count 206
Iterating global reduction 2 with 1 rules applied. Total rules applied 60 place count 82 transition count 206
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 61 place count 81 transition count 204
Iterating global reduction 2 with 1 rules applied. Total rules applied 62 place count 81 transition count 204
Applied a total of 62 rules in 18 ms. Remains 81 /112 variables (removed 31) and now considering 204/271 (removed 67) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18 ms. Remains : 81/112 places, 204/271 transitions.
[2026-05-25 10:26:24] [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 {30=1, 62=1, 92=1, 120=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {25=1, 57=1, 87=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 10:26:24] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
// Phase 1: matrix 125 rows 81 cols
[2026-05-25 10:26:24] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1012 ms. (987 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 654 ms. (1526 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[646] Max Struct:[+inf]
[2026-05-25 10:26:26] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:26] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:26] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:26:26] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:26] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:26:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:26:26] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:26:26] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:26] [INFO ] Deduced a trap composed of 14 places in 70 ms of which 6 ms to minimize.
[2026-05-25 10:26:26] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 78 ms
[2026-05-25 10:26:26] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 70 transitions) in 6 ms.
[2026-05-25 10:26:26] [INFO ] Added : 16 causal constraints over 4 iterations in 46 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[646] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[646] 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 2 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 2 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 10:26:27] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:27] [INFO ] Implicit Places using invariants in 76 ms returned []
[2026-05-25 10:26:27] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:27] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:27] [INFO ] Implicit Places using invariants and state equation in 177 ms returned []
Implicit Place search using SMT with State Equation took 254 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:26:27] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 10:26:27] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:27] [INFO ] Invariant cache hit.
[2026-05-25 10:26:27] [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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 202 unsolved in 7517 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: 0/0 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, 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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 202/304 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 10:26:39] [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 10:26:39] [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) 0/206 variables, 2/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/206 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 7 (OVERLAPS) 0/206 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 306 constraints, problems are : Problem set: 0 solved, 202 unsolved in 13916 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: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 21480ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 21480ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21744 ms. Remains : 81/81 places, 204/204 transitions.
[2026-05-25 10:26:49] [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 {30=1, 62=1, 92=1, 120=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 57=1, 87=1, 120=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 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[646] Max Struct:[+inf]
[2026-05-25 10:26:49] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:49] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[646] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 945 ms. (1057 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 673 ms. (1483 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[646] Max Struct:[+inf]
[2026-05-25 10:26:51] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:51] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:51] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:26:51] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:51] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:26:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:26:51] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:26:51] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:51] [INFO ] Deduced a trap composed of 14 places in 68 ms of which 6 ms to minimize.
[2026-05-25 10:26:51] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 83 ms
[2026-05-25 10:26:51] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 70 transitions) in 8 ms.
[2026-05-25 10:26:51] [INFO ] Added : 16 causal constraints over 4 iterations in 50 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[646] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[646] 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 2 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 2 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 10:26:52] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:52] [INFO ] Implicit Places using invariants in 81 ms returned []
[2026-05-25 10:26:52] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:52] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:53] [INFO ] Implicit Places using invariants and state equation in 170 ms returned []
Implicit Place search using SMT with State Equation took 251 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:26:53] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 10:26:53] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:26:53] [INFO ] Invariant cache hit.
[2026-05-25 10:26:53] [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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 202 unsolved in 7530 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: 0/0 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, 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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 202/304 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 10:27:04] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:04] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/206 variables, 2/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/206 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 7 (OVERLAPS) 0/206 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 306 constraints, problems are : Problem set: 0 solved, 202 unsolved in 14126 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: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 21700ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 21701ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21964 ms. Remains : 81/81 places, 204/204 transitions.
[2026-05-25 10:27:14] [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 {30=1, 62=1, 92=1, 120=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 57=1, 87=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[646] Max Struct:[+inf]
[2026-05-25 10:27:14] [INFO ] Flatten gal took : 12 ms
[2026-05-25 10:27:14] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:27:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6099165641886821368.gal : 1 ms
[2026-05-25 10:27:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8445566288150653529.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/ReachabilityCardinality6099165641886821368.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8445566288150653529.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
RANDOM walk for 40005 steps (8 resets) in 76 ms. (519 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 29 ms. (1333 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality8445566288150653529.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 1043
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1043 after 157827
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :157827 after 1.8539e+08
Interrupted probabilistic random walk after 1785589 steps, run timeout after 3001 ms. (steps per millisecond=594 ) properties seen :0 out of 1
Probabilistic random walk after 1785589 steps, saw 1111379 distinct states, run finished after 3001 ms. (steps per millisecond=594 ) properties seen :0
[2026-05-25 10:27:17] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:27:17] [INFO ] Invariant cache hit.
[2026-05-25 10:27:17] [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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 7/99 variables, 2/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/99 variables, 3/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 95/194 variables, 55/76 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/194 variables, 17/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/200 variables, 1/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/200 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/206 variables, 8/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (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 100 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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 1/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/92 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 7/99 variables, 2/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/99 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 95/194 variables, 55/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 6/200 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/200 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/206 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (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 93 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 216ms problems are : Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.8539e+08 after 3.21598e+12
Parikh walk visited 0 properties in 885 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 2 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 2 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 40004 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1760350 steps, run timeout after 3001 ms. (steps per millisecond=586 ) properties seen :0 out of 1
Probabilistic random walk after 1760350 steps, saw 1095670 distinct states, run finished after 3001 ms. (steps per millisecond=586 ) properties seen :0
[2026-05-25 10:27:22] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:27:22] [INFO ] Invariant cache hit.
[2026-05-25 10:27:22] [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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 7/99 variables, 2/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/99 variables, 3/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 95/194 variables, 55/76 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/194 variables, 17/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/200 variables, 1/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/200 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/206 variables, 8/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (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 81 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) 6/9 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/9 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/19 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 73/92 variables, 8/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/92 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/92 variables, 1/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/92 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 7/99 variables, 2/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/99 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/99 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 95/194 variables, 55/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/194 variables, 17/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 6/200 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/200 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/206 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/206 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (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 91 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 174ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 897 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 2 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 10:27:23] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:27:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:23] [INFO ] Implicit Places using invariants in 61 ms returned []
[2026-05-25 10:27:23] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:27:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:23] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:27:23] [INFO ] Implicit Places using invariants and state equation in 186 ms returned []
Implicit Place search using SMT with State Equation took 248 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:27:23] [INFO ] Redundant transitions in 1 ms returned []
Running 202 sub problems to find dead transitions.
[2026-05-25 10:27:23] [INFO ] Flow matrix only has 125 transitions (discarded 79 similar events)
[2026-05-25 10:27:23] [INFO ] Invariant cache hit.
[2026-05-25 10:27:23] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/81 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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 5 (OVERLAPS) 0/206 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Real declared 206/206 variables, and 102 constraints, problems are : Problem set: 0 solved, 202 unsolved in 7507 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: 0/0 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, 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
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 202/304 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 10:27:34] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:34] [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) 0/206 variables, 2/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/206 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3.21598e+12 after 1.23167e+18
At refinement iteration 7 (OVERLAPS) 0/206 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 202 unsolved
No progress, stopping.
After SMT solving in domain Int declared 206/206 variables, and 306 constraints, problems are : Problem set: 0 solved, 202 unsolved in 13980 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: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 21532ms problems are : Problem set: 0 solved, 202 unsolved
Search for dead transitions found 0 dead transitions in 21532ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21788 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 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 85 rules applied. Total rules applied 85 place count 81 transition count 119
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 91 place count 75 transition count 119
Performed 17 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 17 Pre rules applied. Total rules applied 91 place count 75 transition count 102
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 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 9 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 10:27:44] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:27:44] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:44] [INFO ] After 9ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:27:44] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:27:44] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:27:44] [INFO ] After 31ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:27:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:44] [INFO ] After 9ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:27:44] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:27:44] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:27:44] [INFO ] After 34ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:27:44] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:27:44] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:27:44] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3370257964295810635.gal : 0 ms
[2026-05-25 10:27:44] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4410414994969384309.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/ReachabilityCardinality3370257964295810635.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4410414994969384309.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/ReachabilityCardinality4410414994969384309.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :315 after 74116
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :74116 after 2.14714e+08
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.14714e+08 after 1.77591e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.77591e+09 after 9.4111e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :9.4111e+09 after 4.27012e+10
Detected timeout of ITS tools.
[2026-05-25 10:27:59] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:27:59] [INFO ] Applying decomposition
[2026-05-25 10:27:59] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph5579667676164095982.txt' '-o' '/tmp/graph5579667676164095982.bin' '-w' '/tmp/graph5579667676164095982.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5579667676164095982.bin' '-l' '-1' '-v' '-w' '/tmp/graph5579667676164095982.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:28:00] [INFO ] Decomposing Gal with order
[2026-05-25 10:28:00] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:28:00] [INFO ] Removed a total of 42 redundant transitions.
[2026-05-25 10:28:00] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:28:00] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 10:28:00] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16167226777478223236.gal : 1 ms
[2026-05-25 10:28:00] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6214894787363993778.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/ReachabilityCardinality16167226777478223236.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6214894787363993778.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/ReachabilityCardinality6214894787363993778.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 315
Detected timeout of ITS tools.
[2026-05-25 10:28:04] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:28:04] [INFO ] Applying decomposition
[2026-05-25 10:28:04] [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/graph12294121309370995292.txt' '-o' '/tmp/graph12294121309370995292.bin' '-w' '/tmp/graph12294121309370995292.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12294121309370995292.bin' '-l' '-1' '-v' '-w' '/tmp/graph12294121309370995292.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:28:04] [INFO ] Decomposing Gal with order
[2026-05-25 10:28:04] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:28:04] [INFO ] Removed a total of 344 redundant transitions.
[2026-05-25 10:28:04] [INFO ] Flatten gal took : 8 ms
[2026-05-25 10:28:04] [INFO ] Fuse similar labels procedure discarded/fused a total of 105 labels/synchronizations in 2 ms.
[2026-05-25 10:28:04] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16876523987040319197.gal : 1 ms
[2026-05-25 10:28:04] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9089934457969471456.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/ReachabilityCardinality16876523987040319197.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9089934457969471456.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/ReachabilityCardinality9089934457969471456.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30164 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:[646] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b064-UpperBounds-15 in 111140 ms.
[2026-05-25 10:28:15] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:28:15] [INFO ] Applying decomposition
[2026-05-25 10:28:15] [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/graph10667427079680422725.txt' '-o' '/tmp/graph10667427079680422725.bin' '-w' '/tmp/graph10667427079680422725.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10667427079680422725.bin' '-l' '-1' '-v' '-w' '/tmp/graph10667427079680422725.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:28:15] [INFO ] Decomposing Gal with order
[2026-05-25 10:28:15] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:28:15] [INFO ] Removed a total of 460 redundant transitions.
[2026-05-25 10:28:15] [INFO ] Flatten gal took : 13 ms
[2026-05-25 10:28:15] [INFO ] Fuse similar labels procedure discarded/fused a total of 148 labels/synchronizations in 8 ms.
[2026-05-25 10:28:15] [INFO ] Time to serialize gal into /tmp/UpperBounds18101060478496503034.gal : 6 ms
[2026-05-25 10:28:15] [INFO ] Time to serialize properties into /tmp/UpperBounds3845423339736666998.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/UpperBounds18101060478496503034.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds3845423339736666998.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 ...284
Loading property file /tmp/UpperBounds3845423339736666998.prop.
Detected timeout of ITS tools.
[2026-05-25 10:55:45] [INFO ] Flatten gal took : 6 ms
[2026-05-25 10:55:45] [INFO ] Time to serialize gal into /tmp/UpperBounds11193550447851264919.gal : 2 ms
[2026-05-25 10:55:45] [INFO ] Time to serialize properties into /tmp/UpperBounds842513275814426950.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/UpperBounds11193550447851264919.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds842513275814426950.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 ...304
Loading property file /tmp/UpperBounds842513275814426950.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
++ perl -pe 's/.*\.//g'
++ sed s/.jar//
++ 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