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-177961079800014.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-b128, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r159-tall-177961079800014
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 760K
-rw-r--r-- 1 mcc users 6.8K Mar 7 07:27 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Mar 7 07:27 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.6K Mar 7 07:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 37K Mar 7 07:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Mar 15 10:24 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Mar 15 10:24 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Mar 15 10:24 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 15 10:24 LTLFireability.xml
-rw-r--r-- 1 mcc users 7.4K Mar 7 07:28 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 68K Mar 7 07:28 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.6K Mar 7 07:28 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 72K Mar 7 07:28 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:24 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K 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-b128-UpperBounds-00
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-01
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-02
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-03
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-04
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-05
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-06
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-07
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-08
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-09
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-10
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-11
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-12
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-13
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-14
FORMULA_NAME FunctionPointer-PT-b128-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779703547796

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FunctionPointer-PT-b128
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 10:05:49] [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 10:05:49] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 10:05:49] [INFO ] Load time of PNML (sax parser for PT used): 113 ms
[2026-05-25 10:05:49] [INFO ] Transformed 306 places.
[2026-05-25 10:05:49] [INFO ] Transformed 840 transitions.
[2026-05-25 10:05:49] [INFO ] Parsed PT model containing 306 places and 840 transitions and 3392 arcs in 211 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Deduced a syphon composed of 84 places in 5 ms
Reduce places removed 84 places and 192 transitions.
FORMULA FunctionPointer-PT-b128-UpperBounds-01 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b128-UpperBounds-09 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b128-UpperBounds-12 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:49] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
// Phase 1: matrix 414 rows 222 cols
[2026-05-25 10:05:49] [INFO ] Computed 4 invariants in 18 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, 1, +inf, +inf, +inf, 1, +inf, +inf, 128, +inf, +inf]
RANDOM walk for 10092 steps (7 resets) in 75 ms. (132 steps per ms)
FORMULA FunctionPointer-PT-b128-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 120012 steps (66 resets) in 187 ms. (638 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 2, 1, 22, 8, 10, 0, 1, 5, 4, 8, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, 1, +inf, +inf, 128, +inf, +inf]
[2026-05-25 10:05:49] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
[2026-05-25 10:05:49] [INFO ] Invariant cache hit.
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 5 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 176 ms returned sat
[2026-05-25 10:05:50] [INFO ] State equation strengthened by 65 read => feed constraints.
[2026-05-25 10:05:50] [INFO ] [Real]Added 65 Read/Feed constraints in 17 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 0 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Nat]Absence check using state equation in 215 ms returned sat
[2026-05-25 10:05:50] [INFO ] [Nat]Added 65 Read/Feed constraints in 14 ms returned sat
[2026-05-25 10:05:50] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 57 ms.
[2026-05-25 10:05:50] [INFO ] Added : 4 causal constraints over 2 iterations in 186 ms. Result :sat
Minimization took 80 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:50] [INFO ] [Real]Absence check using 3 positive place invariants in 2 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 10:05:51] [INFO ] [Real]Absence check using state equation in 86 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 16 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Nat]Absence check using state equation in 166 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Nat]Added 65 Read/Feed constraints in 16 ms returned sat
[2026-05-25 10:05:51] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 43 ms.
[2026-05-25 10:05:51] [INFO ] Added : 1 causal constraints over 1 iterations in 101 ms. Result :sat
Minimization took 76 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 2 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 74 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Real]Added 65 Read/Feed constraints in 7 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 71 ms returned sat
[2026-05-25 10:05:51] [INFO ] [Nat]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:51] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 41 ms.
[2026-05-25 10:05:51] [INFO ] Added : 2 causal constraints over 1 iterations in 83 ms. Result :sat
Minimization took 76 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:52] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Real]Absence check using state equation in 71 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Real]Added 65 Read/Feed constraints in 14 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 3 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Absence check using state equation in 74 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Added 65 Read/Feed constraints in 11 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:52] [INFO ] Deduced a trap composed of 21 places in 122 ms of which 21 ms to minimize.
[2026-05-25 10:05:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 156 ms
[2026-05-25 10:05:52] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 46 ms.
[2026-05-25 10:05:52] [INFO ] Added : 2 causal constraints over 1 iterations in 91 ms. Result :sat
Minimization took 89 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:52] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Real]Absence check using state equation in 69 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Real]Added 65 Read/Feed constraints in 25 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 3 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 10:05:52] [INFO ] [Nat]Absence check using state equation in 78 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Nat]Added 65 Read/Feed constraints in 16 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:05:53] [INFO ] Deduced a trap composed of 21 places in 107 ms of which 6 ms to minimize.
[2026-05-25 10:05:53] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 130 ms
[2026-05-25 10:05:53] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 35 ms.
[2026-05-25 10:05:53] [INFO ] Added : 1 causal constraints over 1 iterations in 81 ms. Result :sat
Minimization took 75 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using state equation in 86 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Real]Added 65 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:05:53] [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 10:05:53] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Nat]Absence check using state equation in 103 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Nat]Added 65 Read/Feed constraints in 17 ms returned sat
[2026-05-25 10:05:53] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 29 ms.
[2026-05-25 10:05:53] [INFO ] Added : 3 causal constraints over 1 iterations in 92 ms. Result :sat
Minimization took 77 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using state equation in 70 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:05:54] [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 10:05:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Absence check using state equation in 70 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:05:54] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 25 ms.
[2026-05-25 10:05:54] [INFO ] Added : 3 causal constraints over 1 iterations in 82 ms. Result :sat
Minimization took 85 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:54] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Real]Absence check using state equation in 73 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:54] [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 10:05:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 4 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Absence check using state equation in 72 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:05:54] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 23 ms.
[2026-05-25 10:05:54] [INFO ] Added : 2 causal constraints over 1 iterations in 83 ms. Result :sat
Minimization took 76 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:54] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Real]Absence check using state equation in 73 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:05:54] [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 10:05:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Absence check using state equation in 77 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:55] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 25 ms.
[2026-05-25 10:05:55] [INFO ] Added : 1 causal constraints over 1 iterations in 65 ms. Result :sat
Minimization took 75 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:55] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Real]Absence check using state equation in 66 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:55] [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 10:05:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Absence check using state equation in 75 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:05:55] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 22 ms.
[2026-05-25 10:05:55] [INFO ] Added : 1 causal constraints over 1 iterations in 60 ms. Result :sat
Minimization took 87 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:55] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Real]Absence check using state equation in 79 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:05:55] [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 10:05:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Absence check using state equation in 69 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:05:55] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 22 ms.
[2026-05-25 10:05:56] [INFO ] Added : 2 causal constraints over 1 iterations in 64 ms. Result :sat
Minimization took 75 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:56] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:56] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:56] [INFO ] [Real]Absence check using state equation in 77 ms returned sat
[2026-05-25 10:05:56] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:05:56] [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 10:05:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:05:56] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:56] [INFO ] [Nat]Absence check using state equation in 69 ms returned sat
[2026-05-25 10:05:56] [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 10:05:56] [INFO ] Deduced a trap composed of 21 places in 99 ms of which 7 ms to minimize.
[2026-05-25 10:05:56] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 124 ms
[2026-05-25 10:05:56] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 23 ms.
[2026-05-25 10:05:56] [INFO ] Added : 2 causal constraints over 1 iterations in 63 ms. Result :sat
Minimization took 75 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 2, 1, 22, 8, 10, 0, 1, 5, 4, 8, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, 1, +inf, +inf, 128, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 2, 1, 22, 8, 10, 0, 1, 5, 4, 8, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, 1, +inf, +inf, 128, +inf, +inf]
Support contains 12 out of 222 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 222/222 places, 648/648 transitions.
Graph (complete) has 932 edges and 222 vertex of which 191 are kept as prefixes of interest. Removing 31 places using SCC suffix rule.2 ms
Discarding 31 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 43 transitions
Reduce isomorphic transitions removed 43 transitions.
Iterating post reduction 0 with 43 rules applied. Total rules applied 44 place count 191 transition count 605
Discarding 24 places :
Symmetric choice reduction at 1 with 24 rule applications. Total rules 68 place count 167 transition count 467
Iterating global reduction 1 with 24 rules applied. Total rules applied 92 place count 167 transition count 467
Ensure Unique test removed 36 transitions
Reduce isomorphic transitions removed 36 transitions.
Iterating post reduction 1 with 36 rules applied. Total rules applied 128 place count 167 transition count 431
Discarding 12 places :
Symmetric choice reduction at 2 with 12 rule applications. Total rules 140 place count 155 transition count 407
Iterating global reduction 2 with 12 rules applied. Total rules applied 152 place count 155 transition count 407
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 157 place count 150 transition count 397
Iterating global reduction 2 with 5 rules applied. Total rules applied 162 place count 150 transition count 397
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 167 place count 145 transition count 377
Iterating global reduction 2 with 5 rules applied. Total rules applied 172 place count 145 transition count 377
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 177 place count 140 transition count 367
Iterating global reduction 2 with 5 rules applied. Total rules applied 182 place count 140 transition count 367
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 184 place count 138 transition count 359
Iterating global reduction 2 with 2 rules applied. Total rules applied 186 place count 138 transition count 359
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 188 place count 136 transition count 351
Iterating global reduction 2 with 2 rules applied. Total rules applied 190 place count 136 transition count 351
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 192 place count 134 transition count 347
Iterating global reduction 2 with 2 rules applied. Total rules applied 194 place count 134 transition count 347
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 196 place count 132 transition count 343
Iterating global reduction 2 with 2 rules applied. Total rules applied 198 place count 132 transition count 343
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 200 place count 130 transition count 339
Iterating global reduction 2 with 2 rules applied. Total rules applied 202 place count 130 transition count 339
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 204 place count 128 transition count 335
Iterating global reduction 2 with 2 rules applied. Total rules applied 206 place count 128 transition count 335
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 208 place count 126 transition count 331
Iterating global reduction 2 with 2 rules applied. Total rules applied 210 place count 126 transition count 331
Drop transitions (Redundant composition of simpler transitions.) removed 12 transitions
Redundant transition composition rules discarded 12 transitions
Iterating global reduction 2 with 12 rules applied. Total rules applied 222 place count 126 transition count 319
Applied a total of 222 rules in 157 ms. Remains 126 /222 variables (removed 96) and now considering 319/648 (removed 329) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 164 ms. Remains : 126/222 places, 319/648 transitions.
[2026-05-25 10:05:57] [INFO ] Flow matrix only has 206 transitions (discarded 113 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {32=1, 109=1, 148=1, 191=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 106=1, 145=1, 197=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 105 ms. (steps per millisecond=95 ) properties (out of 12) seen :[5, 3, 6, 13, 6, 15, 1, 4, 3, 2, 2, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[5, 3, 6, 22, 8, 15, 1, 4, 5, 4, 8, 3] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, 1, +inf, +inf, 128, +inf, +inf]
[2026-05-25 10:05:57] [INFO ] Flow matrix only has 206 transitions (discarded 113 similar events)
// Phase 1: matrix 206 rows 126 cols
[2026-05-25 10:05:57] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[5, 3, 6, 22, 8, 15, 1, 4, 5, 4, 8, 3] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, 1, +inf, +inf, 128, +inf, +inf]
FORMULA FunctionPointer-PT-b128-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000004 steps (2 resets) in 1680 ms. (594 steps per ms)
BEST_FIRST walk for 11000011 steps (22 resets) in 13563 ms. (810 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[92, 97, 79, 173, 76, 2013, 78, 89, 16, 37, 66] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 128, +inf, +inf]
[2026-05-25 10:06:12] [INFO ] Flow matrix only has 206 transitions (discarded 113 similar events)
[2026-05-25 10:06:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:12] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-25 10:06:12] [INFO ] State equation strengthened by 34 read => feed constraints.
[2026-05-25 10:06:12] [INFO ] [Real]Added 34 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:12] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Nat]Absence check using state equation in 47 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Nat]Added 34 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:12] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 11 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:12] [INFO ] Deduced a trap composed of 18 places in 76 ms of which 7 ms to minimize.
[2026-05-25 10:06:12] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 91 ms
[2026-05-25 10:06:12] [INFO ] Added : 3 causal constraints over 2 iterations in 139 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:12] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Real]Added 34 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Added 34 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:06:13] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 11 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:13] [INFO ] Deduced a trap composed of 18 places in 81 ms of which 7 ms to minimize.
[2026-05-25 10:06:13] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 114 ms
[2026-05-25 10:06:13] [INFO ] Added : 3 causal constraints over 2 iterations in 167 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:13] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Real]Added 34 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Absence check using state equation in 43 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Added 34 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:13] [INFO ] Deduced a trap composed of 18 places in 84 ms of which 8 ms to minimize.
[2026-05-25 10:06:13] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 100 ms
[2026-05-25 10:06:13] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 9 ms.
[2026-05-25 10:06:13] [INFO ] Added : 5 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:13] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Real]Added 34 Read/Feed constraints in 10 ms returned sat
[2026-05-25 10:06:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Added 34 Read/Feed constraints in 12 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:13] [INFO ] Deduced a trap composed of 18 places in 62 ms of which 7 ms to minimize.
[2026-05-25 10:06:13] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 77 ms
[2026-05-25 10:06:13] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 12 ms.
[2026-05-25 10:06:13] [INFO ] Added : 4 causal constraints over 2 iterations in 48 ms. Result :sat
Minimization took 38 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:14] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Real]Added 34 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Nat]Added 34 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:14] [INFO ] Deduced a trap composed of 18 places in 76 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:14] [INFO ] Deduced a trap composed of 20 places in 75 ms of which 7 ms to minimize.
[2026-05-25 10:06:14] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 171 ms
[2026-05-25 10:06:14] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 9 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:14] [INFO ] Deduced a trap composed of 18 places in 73 ms of which 8 ms to minimize.
[2026-05-25 10:06:14] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 93 ms
[2026-05-25 10:06:14] [INFO ] Added : 9 causal constraints over 3 iterations in 151 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:14] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Real]Added 34 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Nat]Added 34 Read/Feed constraints in 11 ms returned sat
[2026-05-25 10:06:14] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 11 ms.
[2026-05-25 10:06:14] [INFO ] Added : 11 causal constraints over 4 iterations in 60 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:14] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:14] [INFO ] [Real]Added 34 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Added 34 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:15] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 10 ms.
[2026-05-25 10:06:15] [INFO ] Added : 12 causal constraints over 4 iterations in 60 ms. Result :sat
Minimization took 37 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Added 34 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:15] [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 10:06:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Added 34 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:15] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 10 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:15] [INFO ] Deduced a trap composed of 18 places in 71 ms of which 7 ms to minimize.
[2026-05-25 10:06:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 89 ms
[2026-05-25 10:06:15] [INFO ] Added : 3 causal constraints over 2 iterations in 143 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Added 34 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:15] [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 10:06:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Absence check using state equation in 44 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Added 34 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:06:15] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 9 ms.
[2026-05-25 10:06:15] [INFO ] Added : 1 causal constraints over 1 iterations in 35 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using state equation in 45 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Added 34 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:15] [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 10:06:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Nat]Added 34 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:16] [INFO ] Deduced a trap composed of 18 places in 72 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:16] [INFO ] Deduced a trap composed of 18 places in 74 ms of which 7 ms to minimize.
[2026-05-25 10:06:16] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 165 ms
[2026-05-25 10:06:16] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 15 ms.
[2026-05-25 10:06:16] [INFO ] Added : 19 causal constraints over 5 iterations in 82 ms. Result :sat
Minimization took 68 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:16] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:16] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-25 10:06:16] [INFO ] [Real]Added 34 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:16] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:06:16] [INFO ] [Nat]Added 34 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:16] [INFO ] Computed and/alt/rep : 46/184/44 causal constraints (skipped 160 transitions) in 10 ms.
[2026-05-25 10:06:16] [INFO ] Added : 8 causal constraints over 2 iterations in 40 ms. Result :sat
Minimization took 33 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[92, 97, 79, 173, 76, 2013, 78, 89, 16, 37, 66] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 128, +inf, +inf]
FORMULA FunctionPointer-PT-b128-UpperBounds-13 128 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[92, 351, 127, 173, 76, 2013, 78, 89, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 126 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 126/126 places, 319/319 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 125 transition count 317
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 125 transition count 317
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 3 place count 124 transition count 315
Iterating global reduction 0 with 1 rules applied. Total rules applied 4 place count 124 transition count 315
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 123 transition count 313
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 123 transition count 313
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 122 transition count 309
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 122 transition count 309
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 121 transition count 307
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 121 transition count 307
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 11 place count 120 transition count 303
Iterating global reduction 0 with 1 rules applied. Total rules applied 12 place count 120 transition count 303
Applied a total of 12 rules in 28 ms. Remains 120 /126 variables (removed 6) and now considering 303/319 (removed 16) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28 ms. Remains : 120/126 places, 303/319 transitions.
[2026-05-25 10:06:18] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 100=1, 137=1, 180=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 100=1, 137=1, 183=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 78 ms. (steps per millisecond=128 ) properties (out of 10) seen :[5, 3, 8, 11, 5, 15, 4, 3, 1, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[92, 351, 127, 173, 76, 2013, 78, 89, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:18] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:06:18] [INFO ] Computed 3 invariants in 4 ms
Current structural bounds on expressions (after invariants) : Max Seen:[92, 351, 127, 173, 76, 2013, 78, 89, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (2 resets) in 1190 ms. (839 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 12088 ms. (827 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 100, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:31] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:06:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:31] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:31] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:31] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:06:31] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:31] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:32] [INFO ] Deduced a trap composed of 18 places in 58 ms of which 4 ms to minimize.
[2026-05-25 10:06:32] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 70 ms
[2026-05-25 10:06:32] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:06:32] [INFO ] Added : 28 causal constraints over 6 iterations in 99 ms. Result :sat
Minimization took 43 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:32] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:32] [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 10:06:32] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:32] [INFO ] Deduced a trap composed of 18 places in 64 ms of which 4 ms to minimize.
[2026-05-25 10:06:32] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
[2026-05-25 10:06:32] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:32] [INFO ] Deduced a trap composed of 18 places in 65 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:32] [INFO ] Deduced a trap composed of 18 places in 60 ms of which 9 ms to minimize.
[2026-05-25 10:06:32] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 149 ms
[2026-05-25 10:06:32] [INFO ] Added : 15 causal constraints over 6 iterations in 234 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:32] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:32] [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 10:06:32] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:32] [INFO ] Deduced a trap composed of 18 places in 60 ms of which 4 ms to minimize.
[2026-05-25 10:06:32] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 10:06:32] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:06:33] [INFO ] Added : 21 causal constraints over 5 iterations in 74 ms. Result :sat
Minimization took 41 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:06:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Added 33 Read/Feed constraints in 7 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:33] [INFO ] Deduced a trap composed of 18 places in 66 ms of which 6 ms to minimize.
[2026-05-25 10:06:33] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 78 ms
[2026-05-25 10:06:33] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 10 ms.
[2026-05-25 10:06:33] [INFO ] Added : 4 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 47 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Added 33 Read/Feed constraints in 7 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:33] [INFO ] Deduced a trap composed of 18 places in 67 ms of which 4 ms to minimize.
[2026-05-25 10:06:33] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 10:06:33] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:06:33] [INFO ] Added : 14 causal constraints over 4 iterations in 57 ms. Result :sat
Minimization took 37 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:06:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:33] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:06:33] [INFO ] Added : 18 causal constraints over 4 iterations in 64 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:06:34] [INFO ] Added : 17 causal constraints over 4 iterations in 63 ms. Result :sat
Minimization took 44 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Added 33 Read/Feed constraints in 7 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:34] [INFO ] Deduced a trap composed of 18 places in 63 ms of which 4 ms to minimize.
[2026-05-25 10:06:34] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 73 ms
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:06:34] [INFO ] Added : 9 causal constraints over 4 iterations in 60 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:06:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:06:34] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:34] [INFO ] Deduced a trap composed of 18 places in 62 ms of which 4 ms to minimize.
[2026-05-25 10:06:34] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:06:34] [INFO ] Added : 32 causal constraints over 8 iterations in 89 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Absence check using state equation in 43 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:06:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:06:35] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:06:35] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:35] [INFO ] Deduced a trap composed of 18 places in 80 ms of which 8 ms to minimize.
[2026-05-25 10:06:35] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 115 ms
[2026-05-25 10:06:35] [INFO ] Added : 9 causal constraints over 3 iterations in 214 ms. Result :sat
Minimization took 35 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 100, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 100, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 8 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 120/120 places, 303/303 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 15 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
[2026-05-25 10:06:36] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:06:36] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:37] [INFO ] Implicit Places using invariants in 101 ms returned []
[2026-05-25 10:06:37] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:06:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:06:37] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:06:37] [INFO ] Implicit Places using invariants and state equation in 269 ms returned []
Implicit Place search using SMT with State Equation took 372 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:06:37] [INFO ] Redundant transitions in 13 ms returned []
Running 301 sub problems to find dead transitions.
[2026-05-25 10:06:37] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:06:37] [INFO ] Invariant cache hit.
[2026-05-25 10:06:37] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 5 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 301 unsolved in 6758 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 301/457 constraints. Problems are: Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:50] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 4 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/315 variables, 1/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 7 (OVERLAPS) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 458 constraints, problems are : Problem set: 0 solved, 301 unsolved in 26356 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 33319ms problems are : Problem set: 0 solved, 301 unsolved
Search for dead transitions found 0 dead transitions in 33327ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33744 ms. Remains : 120/120 places, 303/303 transitions.
[2026-05-25 10:07:10] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 100=1, 137=1, 180=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 100=1, 137=1, 183=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 102 ms. (steps per millisecond=98 ) properties (out of 10) seen :[6, 3, 4, 14, 6, 8, 3, 4, 2, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 100, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:10] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:07:10] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 100, 37, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (2 resets) in 773 ms. (1291 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 11881 ms. (841 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:23] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:07:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:23] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:23] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:23] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:07:23] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:23] [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 10:07:23] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:23] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:07:23] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:23] [INFO ] Deduced a trap composed of 18 places in 70 ms of which 4 ms to minimize.
[2026-05-25 10:07:23] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 81 ms
[2026-05-25 10:07:23] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:07:23] [INFO ] Added : 28 causal constraints over 6 iterations in 93 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:23] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:23] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:23] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:07:23] [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 10:07:24] [INFO ] [Nat]Absence check using 3 positive 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 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:24] [INFO ] Deduced a trap composed of 18 places in 66 ms of which 4 ms to minimize.
[2026-05-25 10:07:24] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 78 ms
[2026-05-25 10:07:24] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 12 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:24] [INFO ] Deduced a trap composed of 18 places in 77 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:24] [INFO ] Deduced a trap composed of 18 places in 65 ms of which 9 ms to minimize.
[2026-05-25 10:07:24] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 164 ms
[2026-05-25 10:07:24] [INFO ] Added : 15 causal constraints over 6 iterations in 245 ms. Result :sat
Minimization took 37 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 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Added 33 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 3 positive place invariants in 2 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 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:24] [INFO ] Deduced a trap composed of 18 places in 70 ms of which 4 ms to minimize.
[2026-05-25 10:07:24] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 10:07:24] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:07:24] [INFO ] Added : 21 causal constraints over 5 iterations in 74 ms. Result :sat
Minimization took 54 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 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Real]Added 33 Read/Feed constraints in 7 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 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:07:24] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:25] [INFO ] Deduced a trap composed of 18 places in 64 ms of which 6 ms to minimize.
[2026-05-25 10:07:25] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 88 ms
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:07:25] [INFO ] Added : 4 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 10:07:25] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Added 33 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 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:25] [INFO ] Deduced a trap composed of 18 places in 55 ms of which 4 ms to minimize.
[2026-05-25 10:07:25] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 66 ms
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:07:25] [INFO ] Added : 14 causal constraints over 4 iterations in 62 ms. Result :sat
Minimization took 37 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 3 positive place invariants in 2 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 33 Read/Feed constraints in 8 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 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:07:25] [INFO ] Added : 18 causal constraints over 4 iterations in 77 ms. Result :sat
Minimization took 39 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 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Real]Added 33 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 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:07:25] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:07:25] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:07:25] [INFO ] Added : 17 causal constraints over 4 iterations in 59 ms. Result :sat
Minimization took 44 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 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using state equation in 47 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Added 33 Read/Feed constraints in 6 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 3 positive place invariants in 1 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 33 Read/Feed constraints in 8 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:26] [INFO ] Deduced a trap composed of 18 places in 56 ms of which 4 ms to minimize.
[2026-05-25 10:07:26] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 73 ms
[2026-05-25 10:07:26] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:07:26] [INFO ] Added : 9 causal constraints over 4 iterations in 66 ms. Result :sat
Minimization took 36 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 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Added 33 Read/Feed constraints in 6 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 3 positive place invariants in 1 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 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:26] [INFO ] Deduced a trap composed of 18 places in 69 ms of which 4 ms to minimize.
[2026-05-25 10:07:26] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 79 ms
[2026-05-25 10:07:26] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:07:26] [INFO ] Added : 32 causal constraints over 8 iterations in 100 ms. Result :sat
Minimization took 42 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 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Absence check using state equation in 52 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Real]Added 33 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 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:07:26] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:07:26] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:27] [INFO ] Deduced a trap composed of 18 places in 79 ms of which 8 ms to minimize.
[2026-05-25 10:07:27] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 113 ms
[2026-05-25 10:07:27] [INFO ] Added : 9 causal constraints over 3 iterations in 200 ms. Result :sat
Minimization took 35 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 7 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 120/120 places, 303/303 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 7 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
[2026-05-25 10:07:28] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:07:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:28] [INFO ] Implicit Places using invariants in 98 ms returned []
[2026-05-25 10:07:28] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:07:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:28] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:07:28] [INFO ] Implicit Places using invariants and state equation in 229 ms returned []
Implicit Place search using SMT with State Equation took 342 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:07:28] [INFO ] Redundant transitions in 5 ms returned []
Running 301 sub problems to find dead transitions.
[2026-05-25 10:07:28] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:07:28] [INFO ] Invariant cache hit.
[2026-05-25 10:07:28] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 5 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 301 unsolved in 6433 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 301/457 constraints. Problems are: Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:41] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 2 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/315 variables, 1/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 7 (OVERLAPS) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 458 constraints, problems are : Problem set: 0 solved, 301 unsolved in 25530 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 32085ms problems are : Problem set: 0 solved, 301 unsolved
Search for dead transitions found 0 dead transitions in 32086ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 32447 ms. Remains : 120/120 places, 303/303 transitions.
[2026-05-25 10:08:01] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 100=1, 137=1, 180=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 100=1, 137=1, 183=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 54 ms. (steps per millisecond=185 ) properties (out of 10) seen :[4, 2, 5, 7, 4, 5, 3, 5, 2, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:01] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:08:01] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[92, 351, 127, 173, 87, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000041 steps (2 resets) in 816 ms. (1224 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 11879 ms. (841 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[92, 351, 127, 173, 104, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:13] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:08:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:13] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:13] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:13] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:08:13] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:14] [INFO ] Deduced a trap composed of 18 places in 76 ms of which 4 ms to minimize.
[2026-05-25 10:08:14] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 86 ms
[2026-05-25 10:08:14] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:08:14] [INFO ] Added : 28 causal constraints over 6 iterations in 81 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:14] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:14] [INFO ] Deduced a trap composed of 18 places in 57 ms of which 4 ms to minimize.
[2026-05-25 10:08:14] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 67 ms
[2026-05-25 10:08:14] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:14] [INFO ] Deduced a trap composed of 18 places in 71 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:14] [INFO ] Deduced a trap composed of 18 places in 65 ms of which 9 ms to minimize.
[2026-05-25 10:08:14] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 160 ms
[2026-05-25 10:08:14] [INFO ] Added : 15 causal constraints over 6 iterations in 242 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:14] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:08:14] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:14] [INFO ] Deduced a trap composed of 18 places in 70 ms of which 4 ms to minimize.
[2026-05-25 10:08:14] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 10:08:14] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:08:15] [INFO ] Added : 21 causal constraints over 5 iterations in 81 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:15] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:08:15] [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 10:08:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Nat]Added 33 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:15] [INFO ] Deduced a trap composed of 18 places in 60 ms of which 6 ms to minimize.
[2026-05-25 10:08:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 71 ms
[2026-05-25 10:08:15] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:08:15] [INFO ] Added : 4 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:15] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:15] [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 10:08:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:15] [INFO ] Deduced a trap composed of 18 places in 67 ms of which 4 ms to minimize.
[2026-05-25 10:08:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 79 ms
[2026-05-25 10:08:15] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:08:15] [INFO ] Added : 14 causal constraints over 4 iterations in 57 ms. Result :sat
Minimization took 37 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:15] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Real]Absence check using state equation in 54 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Real]Added 33 Read/Feed constraints in 11 ms returned sat
[2026-05-25 10:08:15] [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 10:08:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:08:15] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:15] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:08:16] [INFO ] Added : 18 causal constraints over 4 iterations in 74 ms. Result :sat
Minimization took 48 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:16] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:16] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:08:16] [INFO ] Added : 17 causal constraints over 4 iterations in 72 ms. Result :sat
Minimization took 44 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:16] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:16] [INFO ] Deduced a trap composed of 18 places in 73 ms of which 4 ms to minimize.
[2026-05-25 10:08:16] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 90 ms
[2026-05-25 10:08:16] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:08:16] [INFO ] Added : 9 causal constraints over 4 iterations in 56 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:16] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:08:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:08:16] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:16] [INFO ] Deduced a trap composed of 18 places in 66 ms of which 3 ms to minimize.
[2026-05-25 10:08:16] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 77 ms
[2026-05-25 10:08:16] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:08:17] [INFO ] Added : 32 causal constraints over 8 iterations in 94 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:17] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:08:17] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:08:17] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:08:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:08:17] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:08:17] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:08:17] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:17] [INFO ] Deduced a trap composed of 18 places in 61 ms of which 9 ms to minimize.
[2026-05-25 10:08:17] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 95 ms
[2026-05-25 10:08:17] [INFO ] Added : 9 causal constraints over 3 iterations in 194 ms. Result :sat
Minimization took 35 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[92, 351, 127, 173, 104, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[92, 351, 127, 173, 104, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 8 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 120/120 places, 303/303 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 6 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
[2026-05-25 10:08:18] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:08:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:19] [INFO ] Implicit Places using invariants in 96 ms returned []
[2026-05-25 10:08:19] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:08:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:08:19] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:08:19] [INFO ] Implicit Places using invariants and state equation in 211 ms returned []
Implicit Place search using SMT with State Equation took 332 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:08:19] [INFO ] Redundant transitions in 4 ms returned []
Running 301 sub problems to find dead transitions.
[2026-05-25 10:08:19] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:08:19] [INFO ] Invariant cache hit.
[2026-05-25 10:08:19] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 5 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 301 unsolved in 6389 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 301/457 constraints. Problems are: Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:32] [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) 0/315 variables, 1/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 7 (OVERLAPS) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 458 constraints, problems are : Problem set: 0 solved, 301 unsolved in 26296 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 32802ms problems are : Problem set: 0 solved, 301 unsolved
Search for dead transitions found 0 dead transitions in 32803ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33150 ms. Remains : 120/120 places, 303/303 transitions.
[2026-05-25 10:08:52] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 100=1, 137=1, 180=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 100=1, 137=1, 183=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 55 ms. (steps per millisecond=181 ) properties (out of 10) seen :[5, 4, 5, 8, 3, 5, 3, 5, 2, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[92, 351, 127, 173, 104, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:52] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:08:52] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[92, 351, 127, 173, 104, 2013, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1741 ms. (574 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 11828 ms. (845 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:05] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:09:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:05] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:05] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:09:05] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:09:05] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:05] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:05] [INFO ] [Nat]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:09:05] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:06] [INFO ] Deduced a trap composed of 18 places in 63 ms of which 4 ms to minimize.
[2026-05-25 10:09:06] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 10:09:06] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:06] [INFO ] Added : 28 causal constraints over 6 iterations in 86 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:06] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Real]Added 33 Read/Feed constraints in 14 ms returned sat
[2026-05-25 10:09:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:06] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:06] [INFO ] Deduced a trap composed of 18 places in 59 ms of which 4 ms to minimize.
[2026-05-25 10:09:06] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 69 ms
[2026-05-25 10:09:06] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:06] [INFO ] Deduced a trap composed of 18 places in 74 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:06] [INFO ] Deduced a trap composed of 18 places in 64 ms of which 8 ms to minimize.
[2026-05-25 10:09:06] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 160 ms
[2026-05-25 10:09:06] [INFO ] Added : 15 causal constraints over 6 iterations in 243 ms. Result :sat
Minimization took 39 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:06] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:06] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:09:06] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:06] [INFO ] Deduced a trap composed of 18 places in 70 ms of which 4 ms to minimize.
[2026-05-25 10:09:06] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 10:09:06] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 10 ms.
[2026-05-25 10:09:07] [INFO ] Added : 21 causal constraints over 5 iterations in 77 ms. Result :sat
Minimization took 41 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:07] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:09:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:07] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:07] [INFO ] Deduced a trap composed of 18 places in 71 ms of which 6 ms to minimize.
[2026-05-25 10:09:07] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 81 ms
[2026-05-25 10:09:07] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:09:07] [INFO ] Added : 4 causal constraints over 2 iterations in 43 ms. Result :sat
Minimization took 37 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:07] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:07] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Nat]Added 33 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:07] [INFO ] Deduced a trap composed of 18 places in 56 ms of which 4 ms to minimize.
[2026-05-25 10:09:07] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 68 ms
[2026-05-25 10:09:07] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:07] [INFO ] Added : 14 causal constraints over 4 iterations in 63 ms. Result :sat
Minimization took 47 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:07] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Real]Added 33 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:09:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:07] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:07] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:09:07] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:09:07] [INFO ] Added : 18 causal constraints over 4 iterations in 62 ms. Result :sat
Minimization took 37 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:08] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:08] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:08] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:08] [INFO ] Added : 17 causal constraints over 4 iterations in 60 ms. Result :sat
Minimization took 44 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:08] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:09:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:08] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:08] [INFO ] Deduced a trap composed of 18 places in 65 ms of which 4 ms to minimize.
[2026-05-25 10:09:08] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
[2026-05-25 10:09:08] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 13 ms.
[2026-05-25 10:09:08] [INFO ] Added : 9 causal constraints over 4 iterations in 60 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:08] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:09:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:08] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:08] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:08] [INFO ] Deduced a trap composed of 18 places in 70 ms of which 4 ms to minimize.
[2026-05-25 10:09:08] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 10:09:08] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:08] [INFO ] Added : 32 causal constraints over 8 iterations in 88 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:08] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:09] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:09] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:09] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:09] [INFO ] [Nat]Absence check using state equation in 43 ms returned sat
[2026-05-25 10:09:09] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:09] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:09] [INFO ] Deduced a trap composed of 18 places in 92 ms of which 8 ms to minimize.
[2026-05-25 10:09:09] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 122 ms
[2026-05-25 10:09:09] [INFO ] Added : 9 causal constraints over 3 iterations in 209 ms. Result :sat
Minimization took 35 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 5 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 120/120 places, 303/303 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 5 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
[2026-05-25 10:09:10] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:09:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:10] [INFO ] Implicit Places using invariants in 85 ms returned []
[2026-05-25 10:09:10] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:09:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:11] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:09:11] [INFO ] Implicit Places using invariants and state equation in 214 ms returned []
Implicit Place search using SMT with State Equation took 300 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:09:11] [INFO ] Redundant transitions in 2 ms returned []
Running 301 sub problems to find dead transitions.
[2026-05-25 10:09:11] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:09:11] [INFO ] Invariant cache hit.
[2026-05-25 10:09:11] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 5 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 301 unsolved in 6559 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 301/457 constraints. Problems are: Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:24] [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) 0/315 variables, 1/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 7 (OVERLAPS) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 458 constraints, problems are : Problem set: 0 solved, 301 unsolved in 26285 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 32921ms problems are : Problem set: 0 solved, 301 unsolved
Search for dead transitions found 0 dead transitions in 32923ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33234 ms. Remains : 120/120 places, 303/303 transitions.
[2026-05-25 10:09:44] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 100=1, 137=1, 180=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 100=1, 137=1, 183=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 56 ms. (steps per millisecond=178 ) properties (out of 10) seen :[5, 3, 4, 8, 3, 8, 3, 3, 2, 4]
Current structural bounds on expressions (after cover walk) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:44] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:09:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000003 steps (2 resets) in 1657 ms. (603 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 11875 ms. (842 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:09:57] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:09:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:57] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:57] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:57] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:09:57] [INFO ] [Real]Added 33 Read/Feed constraints in 14 ms returned sat
[2026-05-25 10:09:57] [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 10:09:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:57] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:57] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:58] [INFO ] Deduced a trap composed of 18 places in 55 ms of which 4 ms to minimize.
[2026-05-25 10:09:58] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 66 ms
[2026-05-25 10:09:58] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:58] [INFO ] Added : 28 causal constraints over 6 iterations in 104 ms. Result :sat
Minimization took 48 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:58] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Real]Absence check using state equation in 42 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Real]Added 33 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:09:58] [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 10:09:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:58] [INFO ] Deduced a trap composed of 18 places in 67 ms of which 4 ms to minimize.
[2026-05-25 10:09:58] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 77 ms
[2026-05-25 10:09:58] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 13 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:58] [INFO ] Deduced a trap composed of 18 places in 69 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:58] [INFO ] Deduced a trap composed of 18 places in 55 ms of which 9 ms to minimize.
[2026-05-25 10:09:58] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 147 ms
[2026-05-25 10:09:58] [INFO ] Added : 15 causal constraints over 6 iterations in 234 ms. Result :sat
Minimization took 37 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:58] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:09:58] [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 10:09:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:58] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:58] [INFO ] Deduced a trap composed of 18 places in 58 ms of which 4 ms to minimize.
[2026-05-25 10:09:58] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 71 ms
[2026-05-25 10:09:58] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:58] [INFO ] Added : 21 causal constraints over 5 iterations in 80 ms. Result :sat
Minimization took 42 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:59] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:09:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Nat]Added 33 Read/Feed constraints in 7 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:59] [INFO ] Deduced a trap composed of 18 places in 81 ms of which 7 ms to minimize.
[2026-05-25 10:09:59] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 93 ms
[2026-05-25 10:09:59] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:59] [INFO ] Added : 4 causal constraints over 2 iterations in 40 ms. Result :sat
Minimization took 38 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:09:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:59] [INFO ] Deduced a trap composed of 18 places in 66 ms of which 4 ms to minimize.
[2026-05-25 10:09:59] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 79 ms
[2026-05-25 10:09:59] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:59] [INFO ] Added : 14 causal constraints over 4 iterations in 55 ms. Result :sat
Minimization took 38 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 10:09:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:09:59] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:09:59] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:09:59] [INFO ] Added : 18 causal constraints over 4 iterations in 63 ms. Result :sat
Minimization took 38 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:09:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:00] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:00] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 11 ms.
[2026-05-25 10:10:00] [INFO ] Added : 17 causal constraints over 4 iterations in 64 ms. Result :sat
Minimization took 44 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:00] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:00] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:00] [INFO ] Deduced a trap composed of 18 places in 56 ms of which 4 ms to minimize.
[2026-05-25 10:10:00] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 67 ms
[2026-05-25 10:10:00] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:10:00] [INFO ] Added : 9 causal constraints over 4 iterations in 53 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:00] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:10:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:00] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:00] [INFO ] Deduced a trap composed of 18 places in 65 ms of which 4 ms to minimize.
[2026-05-25 10:10:00] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 10:10:00] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 13 ms.
[2026-05-25 10:10:00] [INFO ] Added : 32 causal constraints over 8 iterations in 96 ms. Result :sat
Minimization took 42 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:00] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:10:00] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:10:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Absence check using state equation in 40 ms returned sat
[2026-05-25 10:10:01] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:10:01] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:01] [INFO ] Deduced a trap composed of 18 places in 72 ms of which 9 ms to minimize.
[2026-05-25 10:10:01] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 107 ms
[2026-05-25 10:10:01] [INFO ] Added : 9 causal constraints over 3 iterations in 209 ms. Result :sat
Minimization took 37 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 10 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 120/120 places, 303/303 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 6 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
[2026-05-25 10:10:02] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:10:02] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:02] [INFO ] Implicit Places using invariants in 80 ms returned []
[2026-05-25 10:10:02] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:10:02] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:10:02] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:10:03] [INFO ] Implicit Places using invariants and state equation in 223 ms returned []
Implicit Place search using SMT with State Equation took 304 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:10:03] [INFO ] Redundant transitions in 1 ms returned []
Running 301 sub problems to find dead transitions.
[2026-05-25 10:10:03] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:10:03] [INFO ] Invariant cache hit.
[2026-05-25 10:10:03] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 5 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 301 unsolved in 6609 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 301/457 constraints. Problems are: Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:16] [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) 0/315 variables, 1/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 7 (OVERLAPS) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 458 constraints, problems are : Problem set: 0 solved, 301 unsolved in 26114 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 32802ms problems are : Problem set: 0 solved, 301 unsolved
Search for dead transitions found 0 dead transitions in 32804ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33125 ms. Remains : 120/120 places, 303/303 transitions.
[2026-05-25 10:10:35] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 100=1, 137=1, 180=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 100=1, 137=1, 183=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 53 ms. (steps per millisecond=188 ) properties (out of 10) seen :[4, 3, 5, 8, 5, 8, 4, 3, 2, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 40001 steps (8 resets) in 852 ms. (46 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 169 ms. (235 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 131 ms. (303 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 117 ms. (339 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 105 ms. (377 steps per ms) remains 10/10 properties
[2026-05-25 10:10:36] [INFO ] Flatten gal took : 80 ms
[2026-05-25 10:10:36] [INFO ] Flatten gal took : 25 ms
BEST_FIRST walk for 40004 steps (8 resets) in 99 ms. (400 steps per ms) remains 10/10 properties
[2026-05-25 10:10:36] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14608054526405270175.gal : 14 ms
[2026-05-25 10:10:36] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality17953806541014192924.prop : 1 ms
BEST_FIRST walk for 40004 steps (8 resets) in 111 ms. (357 steps per ms) remains 10/10 properties
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/ReachabilityCardinality14608054526405270175.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality17953806541014192924.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
BEST_FIRST walk for 40004 steps (8 resets) in 134 ms. (296 steps per ms) remains 10/10 properties
Loading property file /tmp/ReachabilityCardinality17953806541014192924.prop.
BEST_FIRST walk for 40004 steps (8 resets) in 105 ms. (377 steps per ms) remains 10/10 properties
SDD proceeding with computation,10 properties remain. new max is 4
SDD size :1 after 31
BEST_FIRST walk for 40004 steps (8 resets) in 108 ms. (367 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 82 ms. (481 steps per ms) remains 10/10 properties
SDD proceeding with computation,10 properties remain. new max is 8
SDD size :31 after 1084
SDD proceeding with computation,10 properties remain. new max is 16
SDD size :1084 after 212749
Interrupted probabilistic random walk after 268430 steps, run timeout after 3001 ms. (steps per millisecond=89 ) properties seen :0 out of 10
Probabilistic random walk after 268430 steps, saw 167103 distinct states, run finished after 3007 ms. (steps per millisecond=89 ) properties seen :0
[2026-05-25 10:10:39] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:10:39] [INFO ] Invariant cache hit.
[2026-05-25 10:10:39] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 32/42 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/42 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 134/176 variables, 26/36 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/176 variables, 1/37 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/176 variables, 5/42 constraints. Problems are: Problem set: 0 solved, 10 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/176 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (OVERLAPS) 11/187 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/187 variables, 3/46 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/187 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 10 (OVERLAPS) 114/301 variables, 71/117 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/301 variables, 28/145 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/301 variables, 0/145 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 13 (OVERLAPS) 6/307 variables, 1/146 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/307 variables, 0/146 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 15 (OVERLAPS) 8/315 variables, 10/156 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 17 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 10 unsolved in 407 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 32/42 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/42 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 134/176 variables, 26/36 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/176 variables, 1/37 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/176 variables, 5/42 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/176 variables, 9/51 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/176 variables, 0/51 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (OVERLAPS) 11/187 variables, 1/52 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/187 variables, 3/55 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/187 variables, 0/55 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 11 (OVERLAPS) 114/301 variables, 71/126 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/301 variables, 28/154 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/301 variables, 1/155 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:40] [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 10:10:40] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/301 variables, 2/157 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/301 variables, 0/157 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 16 (OVERLAPS) 6/307 variables, 1/158 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/307 variables, 0/158 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 18 (OVERLAPS) 8/315 variables, 10/168 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:40] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:40] [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 10:10:40] [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 10:10:40] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
At refinement iteration 19 (INCLUDED_ONLY) 0/315 variables, 4/172 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/315 variables, 0/172 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 21 (OVERLAPS) 0/315 variables, 0/172 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 172 constraints, problems are : Problem set: 0 solved, 10 unsolved in 1221 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 1635ms problems are : Problem set: 0 solved, 10 unsolved
Fused 10 Parikh solutions to 3 different solutions.
SDD proceeding with computation,10 properties remain. new max is 32
SDD size :212749 after 9.61935e+08
Parikh walk visited 0 properties in 30001 ms.
Support contains 10 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 6 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 120/120 places, 303/303 transitions.
RANDOM walk for 40018 steps (8 resets) in 150 ms. (265 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 54 ms. (727 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40003 steps (8 resets) in 78 ms. (506 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40003 steps (8 resets) in 70 ms. (563 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40003 steps (8 resets) in 87 ms. (454 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 67 ms. (588 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 58 ms. (678 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40003 steps (8 resets) in 79 ms. (500 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 66 ms. (597 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 76 ms. (519 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 71 ms. (555 steps per ms) remains 10/10 properties
Interrupted probabilistic random walk after 236090 steps, run timeout after 3001 ms. (steps per millisecond=78 ) properties seen :0 out of 10
Probabilistic random walk after 236090 steps, saw 146973 distinct states, run finished after 3001 ms. (steps per millisecond=78 ) properties seen :0
[2026-05-25 10:11:14] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:11:14] [INFO ] Invariant cache hit.
[2026-05-25 10:11:14] [INFO ] State equation strengthened by 33 read => feed constraints.
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, 10 unsolved
At refinement iteration 1 (OVERLAPS) 32/42 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/42 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 134/176 variables, 26/36 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/176 variables, 1/37 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/176 variables, 5/42 constraints. Problems are: Problem set: 0 solved, 10 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/176 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (OVERLAPS) 11/187 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/187 variables, 3/46 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/187 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 10 (OVERLAPS) 114/301 variables, 71/117 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/301 variables, 28/145 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/301 variables, 0/145 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 13 (OVERLAPS) 6/307 variables, 1/146 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/307 variables, 0/146 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 15 (OVERLAPS) 8/315 variables, 10/156 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 17 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 10 unsolved in 395 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 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, 10 unsolved
At refinement iteration 1 (OVERLAPS) 32/42 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/42 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 134/176 variables, 26/36 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/176 variables, 1/37 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/176 variables, 5/42 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/176 variables, 9/51 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/176 variables, 0/51 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 8 (OVERLAPS) 11/187 variables, 1/52 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/187 variables, 3/55 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/187 variables, 0/55 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 11 (OVERLAPS) 114/301 variables, 71/126 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/301 variables, 28/154 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/301 variables, 1/155 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:11:15] [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 10:11:15] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/301 variables, 2/157 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/301 variables, 0/157 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 16 (OVERLAPS) 6/307 variables, 1/158 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/307 variables, 0/158 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 18 (OVERLAPS) 8/315 variables, 10/168 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:11:15] [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 10:11:15] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:11:15] [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 10:11:15] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
At refinement iteration 19 (INCLUDED_ONLY) 0/315 variables, 4/172 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/315 variables, 0/172 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 21 (OVERLAPS) 0/315 variables, 0/172 constraints. Problems are: Problem set: 0 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 172 constraints, problems are : Problem set: 0 solved, 10 unsolved in 1199 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 1600ms problems are : Problem set: 0 solved, 10 unsolved
Fused 10 Parikh solutions to 3 different solutions.
Detected timeout of ITS tools.
[2026-05-25 10:11:26] [INFO ] Flatten gal took : 19 ms
[2026-05-25 10:11:26] [INFO ] Applying decomposition
[2026-05-25 10:11:26] [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/graph2020564420390478036.txt' '-o' '/tmp/graph2020564420390478036.bin' '-w' '/tmp/graph2020564420390478036.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2020564420390478036.bin' '-l' '-1' '-v' '-w' '/tmp/graph2020564420390478036.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:11:26] [INFO ] Decomposing Gal with order
[2026-05-25 10:11:26] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:11:26] [INFO ] Removed a total of 532 redundant transitions.
[2026-05-25 10:11:26] [INFO ] Flatten gal took : 106 ms
[2026-05-25 10:11:27] [INFO ] Fuse similar labels procedure discarded/fused a total of 157 labels/synchronizations in 23 ms.
[2026-05-25 10:11:27] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5810256497997754752.gal : 4 ms
[2026-05-25 10:11:27] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8036165357519260913.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/ReachabilityCardinality5810256497997754752.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8036165357519260913.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/ReachabilityCardinality8036165357519260913.prop.
Parikh walk visited 0 properties in 30000 ms.
Support contains 10 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 6 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 120/120 places, 303/303 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Applied a total of 0 rules in 5 ms. Remains 120 /120 variables (removed 0) and now considering 303/303 (removed 0) transitions.
[2026-05-25 10:11:46] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:11:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:46] [INFO ] Implicit Places using invariants in 110 ms returned []
[2026-05-25 10:11:46] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:11:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:46] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:11:46] [INFO ] Implicit Places using invariants and state equation in 243 ms returned []
Implicit Place search using SMT with State Equation took 355 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:11:46] [INFO ] Redundant transitions in 1 ms returned []
Running 301 sub problems to find dead transitions.
[2026-05-25 10:11:46] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:11:46] [INFO ] Invariant cache hit.
[2026-05-25 10:11:46] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 5 (OVERLAPS) 0/315 variables, 0/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Real declared 315/315 variables, and 156 constraints, problems are : Problem set: 0 solved, 301 unsolved in 6158 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/120 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/120 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 2 (OVERLAPS) 195/315 variables, 120/123 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/315 variables, 33/156 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/315 variables, 301/457 constraints. Problems are: Problem set: 0 solved, 301 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:11:59] [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) 0/315 variables, 1/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
Detected timeout of ITS tools.
At refinement iteration 7 (OVERLAPS) 0/315 variables, 0/458 constraints. Problems are: Problem set: 0 solved, 301 unsolved
No progress, stopping.
After SMT solving in domain Int declared 315/315 variables, and 458 constraints, problems are : Problem set: 0 solved, 301 unsolved in 26581 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 120/120 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 301/301 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 32860ms problems are : Problem set: 0 solved, 301 unsolved
Search for dead transitions found 0 dead transitions in 32863ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33232 ms. Remains : 120/120 places, 303/303 transitions.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[92, 351, 127, 173, 104, 4509, 78, 114, 42, 127] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Starting property specific reduction for FunctionPointer-PT-b128-UpperBounds-00
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:12:19] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:12:19] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10001 steps (2 resets) in 16 ms. (588 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:[3] Max Struct:[+inf]
[2026-05-25 10:12:19] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:12:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:12:19] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:12:19] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:12:19] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:12:19] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:12:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:12:19] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:19] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:12:19] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:19] [INFO ] Deduced a trap composed of 18 places in 72 ms of which 4 ms to minimize.
[2026-05-25 10:12:19] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 84 ms
[2026-05-25 10:12:19] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:12:19] [INFO ] Added : 28 causal constraints over 6 iterations in 94 ms. Result :sat
Minimization took 40 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3] Max Struct:[+inf]
Support contains 1 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 276
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 276
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 26 place count 110 transition count 270
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 32 place count 104 transition count 256
Iterating global reduction 2 with 6 rules applied. Total rules applied 38 place count 104 transition count 256
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 42 place count 104 transition count 252
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 46 place count 100 transition count 242
Iterating global reduction 3 with 4 rules applied. Total rules applied 50 place count 100 transition count 242
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 54 place count 96 transition count 232
Iterating global reduction 3 with 4 rules applied. Total rules applied 58 place count 96 transition count 232
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 62 place count 92 transition count 224
Iterating global reduction 3 with 4 rules applied. Total rules applied 66 place count 92 transition count 224
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 70 place count 88 transition count 216
Iterating global reduction 3 with 4 rules applied. Total rules applied 74 place count 88 transition count 216
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 78 place count 84 transition count 208
Iterating global reduction 3 with 4 rules applied. Total rules applied 82 place count 84 transition count 208
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 84 place count 82 transition count 204
Iterating global reduction 3 with 2 rules applied. Total rules applied 86 place count 82 transition count 204
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 88 place count 80 transition count 200
Iterating global reduction 3 with 2 rules applied. Total rules applied 90 place count 80 transition count 200
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 91 place count 79 transition count 198
Iterating global reduction 3 with 1 rules applied. Total rules applied 92 place count 79 transition count 198
Applied a total of 92 rules in 31 ms. Remains 79 /120 variables (removed 41) and now considering 198/303 (removed 105) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 31 ms. Remains : 79/120 places, 198/303 transitions.
[2026-05-25 10:12:19] [INFO ] Flow matrix only has 122 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 {31=1, 60=1, 106=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 59=1, 105=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 42 ms. (steps per millisecond=238 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[6] Max Struct:[+inf]
[2026-05-25 10:12:20] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
// Phase 1: matrix 122 rows 79 cols
[2026-05-25 10:12:20] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[6] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1060 ms. (942 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 683 ms. (1461 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[657] Max Struct:[+inf]
[2026-05-25 10:12:21] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:21] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:21] [INFO ] [Real]Absence check using state equation in 28 ms returned sat
[2026-05-25 10:12:21] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:12:21] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:21] [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 10:12:21] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:12:21] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:12:21] [INFO ] [Nat]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:12:21] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 67 transitions) in 7 ms.
[2026-05-25 10:12:21] [INFO ] Added : 12 causal constraints over 3 iterations in 37 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[657] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[657] Max Struct:[+inf]
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 79/79 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 2 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:12:23] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:12:23] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 10:12:23] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:12:23] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:12:23] [INFO ] Implicit Places using invariants and state equation in 172 ms returned []
Implicit Place search using SMT with State Equation took 241 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:12:23] [INFO ] Redundant transitions in 1 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:12:23] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:23] [INFO ] Invariant cache hit.
[2026-05-25 10:12:23] [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) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4471 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 196/296 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:31] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:31] [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 10:12:31] [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 10:12:32] [INFO ] Deduced a trap along path composed of 3 places in 32 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:32] [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) 0/201 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (OVERLAPS) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 301 constraints, problems are : Problem set: 0 solved, 196 unsolved in 13771 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 18297ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 18298ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18547 ms. Remains : 79/79 places, 198/198 transitions.
[2026-05-25 10:12:41] [INFO ] Flow matrix only has 122 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 {31=1, 60=1, 106=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 59=1, 105=1, 120=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 :[10]
Current structural bounds on expressions (after cover walk) : Max Seen:[657] Max Struct:[+inf]
[2026-05-25 10:12:42] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:42] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[657] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1088 ms. (918 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 668 ms. (1494 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[716] Max Struct:[+inf]
[2026-05-25 10:12:43] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:43] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:12:43] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:12:43] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:12:43] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:43] [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 10:12:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:12:43] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:12:43] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:12:43] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 67 transitions) in 6 ms.
[2026-05-25 10:12:43] [INFO ] Added : 12 causal constraints over 3 iterations in 35 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[716] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[716] Max Struct:[+inf]
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 4 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 79/79 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 4 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:12:45] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:12:45] [INFO ] Implicit Places using invariants in 66 ms returned []
[2026-05-25 10:12:45] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:12:45] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:12:45] [INFO ] Implicit Places using invariants and state equation in 183 ms returned []
Implicit Place search using SMT with State Equation took 263 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:12:45] [INFO ] Redundant transitions in 1 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:12:45] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:12:45] [INFO ] Invariant cache hit.
[2026-05-25 10:12:45] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4396 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 196/296 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:53] [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 10:12:53] [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 10:12:53] [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 10:12:54] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:54] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/201 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (OVERLAPS) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 301 constraints, problems are : Problem set: 0 solved, 196 unsolved in 13588 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 18034ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 18035ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18308 ms. Remains : 79/79 places, 198/198 transitions.
[2026-05-25 10:13:03] [INFO ] Flow matrix only has 122 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 {31=1, 60=1, 106=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {30=1, 59=1, 105=1, 120=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 :[8]
Current structural bounds on expressions (after cover walk) : Max Seen:[716] Max Struct:[+inf]
[2026-05-25 10:13:03] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:03] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[716] Max Struct:[+inf]
RANDOM walk for 1000002 steps (2 resets) in 1066 ms. (937 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 663 ms. (1506 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[716] Max Struct:[+inf]
[2026-05-25 10:13:05] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:13:05] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:05] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:13:05] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:13:05] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:05] [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 10:13:05] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:13:05] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:13:05] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:13:05] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 67 transitions) in 6 ms.
[2026-05-25 10:13:05] [INFO ] Added : 12 causal constraints over 3 iterations in 35 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[716] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[716] Max Struct:[+inf]
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 79/79 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 2 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:13:07] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:07] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-05-25 10:13:07] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:07] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:13:07] [INFO ] Implicit Places using invariants and state equation in 181 ms returned []
Implicit Place search using SMT with State Equation took 250 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:13:07] [INFO ] Redundant transitions in 1 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:13:07] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:07] [INFO ] Invariant cache hit.
[2026-05-25 10:13:07] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4433 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 196/296 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:15] [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 10:13:15] [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 10:13:15] [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 10:13:16] [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 10:13:16] [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) 0/201 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (OVERLAPS) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 301 constraints, problems are : Problem set: 0 solved, 196 unsolved in 13871 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 18347ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 18347ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18605 ms. Remains : 79/79 places, 198/198 transitions.
[2026-05-25 10:13:26] [INFO ] Flow matrix only has 122 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 {31=1, 60=1, 106=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 59=1, 105=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 38 ms. (steps per millisecond=263 ) properties (out of 1) seen :[12]
Current structural bounds on expressions (after cover walk) : Max Seen:[716] Max Struct:[+inf]
[2026-05-25 10:13:26] [INFO ] Flatten gal took : 11 ms
RANDOM walk for 40010 steps (8 resets) in 108 ms. (367 steps per ms) remains 1/1 properties
[2026-05-25 10:13:26] [INFO ] Flatten gal took : 21 ms
BEST_FIRST walk for 40004 steps (8 resets) in 39 ms. (1000 steps per ms) remains 1/1 properties
[2026-05-25 10:13:26] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1784278892858165357.gal : 2 ms
[2026-05-25 10:13:26] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3596382689926100948.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/ReachabilityCardinality1784278892858165357.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3596382689926100948.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/ReachabilityCardinality3596382689926100948.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1040
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1040 after 155244
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :155244 after 1.77406e+08
Interrupted probabilistic random walk after 1935062 steps, run timeout after 3001 ms. (steps per millisecond=644 ) properties seen :0 out of 1
Probabilistic random walk after 1935062 steps, saw 1204370 distinct states, run finished after 3001 ms. (steps per millisecond=644 ) properties seen :0
[2026-05-25 10:13:29] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:29] [INFO ] Invariant cache hit.
[2026-05-25 10:13:29] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 7/82 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/82 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/182 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/182 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/188 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/188 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/198 variables, 10/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/198 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 3/201 variables, 2/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 1 unsolved in 92 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/75 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/82 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/82 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 100/182 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/182 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/188 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/188 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 10/198 variables, 10/99 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 10:13:29] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/198 variables, 1/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/198 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/201 variables, 2/102 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 10:13:29] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:29] [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 10:13:29] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 19 (INCLUDED_ONLY) 0/201 variables, 3/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/201 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/201 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 212 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 318ms 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 853 ms.
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 79/79 places, 198/198 transitions.
RANDOM walk for 40002 steps (8 resets) in 83 ms. (476 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1993338 steps, run timeout after 3001 ms. (steps per millisecond=664 ) properties seen :0 out of 1
Probabilistic random walk after 1993338 steps, saw 1240640 distinct states, run finished after 3001 ms. (steps per millisecond=664 ) properties seen :0
[2026-05-25 10:13:33] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:33] [INFO ] Invariant cache hit.
[2026-05-25 10:13:33] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 7/82 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/82 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/182 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/182 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/188 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/188 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/198 variables, 10/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/198 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 3/201 variables, 2/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 1 unsolved in 83 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/75 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/82 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/82 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 100/182 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/182 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/188 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/188 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 10/198 variables, 10/99 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 10:13:33] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/198 variables, 1/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/198 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/201 variables, 2/102 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 10:13:33] [INFO ] Deduced a trap along path composed of 3 places in 12 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:33] [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 10:13:33] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 19 (INCLUDED_ONLY) 0/201 variables, 3/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/201 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/201 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 231 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 338ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 873 ms.
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 79/79 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:13:34] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:34] [INFO ] Implicit Places using invariants in 84 ms returned []
[2026-05-25 10:13:34] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:34] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:13:34] [INFO ] Implicit Places using invariants and state equation in 171 ms returned []
Implicit Place search using SMT with State Equation took 269 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:13:34] [INFO ] Redundant transitions in 0 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:13:34] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:13:34] [INFO ] Invariant cache hit.
[2026-05-25 10:13:34] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4370 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 196/296 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:42] [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 10:13:42] [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 10:13:42] [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 10:13:43] [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 10:13:43] [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) 0/201 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.78305e+12 after 8.75832e+17
At refinement iteration 7 (OVERLAPS) 0/201 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 301 constraints, problems are : Problem set: 0 solved, 196 unsolved in 13319 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 17750ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 17751ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18028 ms. Remains : 79/79 places, 198/198 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 76 transitions
Reduce isomorphic transitions removed 76 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 84 rules applied. Total rules applied 84 place count 79 transition count 114
Reduce places removed 8 places and 0 transitions.
Iterating post reduction 1 with 8 rules applied. Total rules applied 92 place count 71 transition count 114
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 13 Pre rules applied. Total rules applied 92 place count 71 transition count 101
Deduced a syphon composed of 13 places in 0 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 2 with 26 rules applied. Total rules applied 118 place count 58 transition count 101
Performed 16 Post agglomeration using F-continuation condition.Transition count delta: 16
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 150 place count 42 transition count 85
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 157 place count 35 transition count 71
Iterating global reduction 2 with 7 rules applied. Total rules applied 164 place count 35 transition count 71
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 171 place count 28 transition count 57
Iterating global reduction 2 with 7 rules applied. Total rules applied 178 place count 28 transition count 57
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 185 place count 21 transition count 43
Iterating global reduction 2 with 7 rules applied. Total rules applied 192 place count 21 transition count 43
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 199 place count 21 transition count 36
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 199 place count 21 transition count 35
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 201 place count 20 transition count 35
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -1
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 203 place count 19 transition count 36
Applied a total of 203 rules in 20 ms. Remains 19 /79 variables (removed 60) and now considering 36/198 (removed 162) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 36 rows 19 cols
[2026-05-25 10:13:52] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:13:52] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:13:52] [INFO ] After 77ms 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 10:13:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:13:52] [INFO ] After 12ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:13:52] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:13:52] [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 10:13:52] [INFO ] After 5ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:13:52] [INFO ] After 49ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:13:52] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:13:52] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:13:52] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11669058728647477694.gal : 1 ms
[2026-05-25 10:13:52] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13639777657329939526.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/ReachabilityCardinality11669058728647477694.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13639777657329939526.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/ReachabilityCardinality13639777657329939526.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 441230
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :441230 after 6.32845e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :6.32845e+09 after 5.42758e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.42758e+10 after 2.91075e+11
Detected timeout of ITS tools.
[2026-05-25 10:14:07] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:14:07] [INFO ] Applying decomposition
[2026-05-25 10:14:07] [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/graph12487008211766319752.txt' '-o' '/tmp/graph12487008211766319752.bin' '-w' '/tmp/graph12487008211766319752.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12487008211766319752.bin' '-l' '-1' '-v' '-w' '/tmp/graph12487008211766319752.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:14:07] [INFO ] Decomposing Gal with order
[2026-05-25 10:14:07] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:14:07] [INFO ] Removed a total of 42 redundant transitions.
[2026-05-25 10:14:07] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:14:07] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 10:14:07] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6228378140207498239.gal : 1 ms
[2026-05-25 10:14:07] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality347087022617765186.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/ReachabilityCardinality6228378140207498239.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality347087022617765186.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/ReachabilityCardinality347087022617765186.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
Detected timeout of ITS tools.
[2026-05-25 10:14:16] [INFO ] Flatten gal took : 8 ms
[2026-05-25 10:14:16] [INFO ] Applying decomposition
[2026-05-25 10:14:16] [INFO ] Flatten gal took : 8 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph5853307745156702738.txt' '-o' '/tmp/graph5853307745156702738.bin' '-w' '/tmp/graph5853307745156702738.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5853307745156702738.bin' '-l' '-1' '-v' '-w' '/tmp/graph5853307745156702738.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:14:16] [INFO ] Decomposing Gal with order
[2026-05-25 10:14:16] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:14:16] [INFO ] Removed a total of 333 redundant transitions.
[2026-05-25 10:14:16] [INFO ] Flatten gal took : 25 ms
[2026-05-25 10:14:16] [INFO ] Fuse similar labels procedure discarded/fused a total of 97 labels/synchronizations in 8 ms.
[2026-05-25 10:14:16] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1521759401953598905.gal : 2 ms
[2026-05-25 10:14:16] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7598405430158940667.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/ReachabilityCardinality1521759401953598905.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7598405430158940667.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/ReachabilityCardinality7598405430158940667.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30273 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:[716] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-00 in 123453 ms.
Starting property specific reduction for FunctionPointer-PT-b128-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 10:14:22] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:14:22] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 14 ms. (666 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 8 ms. (1111 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[5] Max Struct:[+inf]
[2026-05-25 10:14:22] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:14:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:14:23] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:23] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:14:23] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:14:23] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 10:14:23] [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 10:14:23] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:14:23] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:14:23] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:23] [INFO ] Deduced a trap composed of 18 places in 69 ms of which 4 ms to minimize.
[2026-05-25 10:14:23] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 79 ms
[2026-05-25 10:14:23] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:23] [INFO ] Deduced a trap composed of 18 places in 57 ms of which 6 ms to minimize.
[2026-05-25 10:14:23] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 72 ms
[2026-05-25 10:14:23] [INFO ] Added : 4 causal constraints over 3 iterations in 130 ms. Result :sat
Minimization took 35 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 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 276
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 276
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 24 place count 110 transition count 272
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 31 place count 103 transition count 256
Iterating global reduction 2 with 7 rules applied. Total rules applied 38 place count 103 transition count 256
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 42 place count 103 transition count 252
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 47 place count 98 transition count 240
Iterating global reduction 3 with 5 rules applied. Total rules applied 52 place count 98 transition count 240
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 57 place count 93 transition count 228
Iterating global reduction 3 with 5 rules applied. Total rules applied 62 place count 93 transition count 228
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 67 place count 88 transition count 218
Iterating global reduction 3 with 5 rules applied. Total rules applied 72 place count 88 transition count 218
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 76 place count 84 transition count 210
Iterating global reduction 3 with 4 rules applied. Total rules applied 80 place count 84 transition count 210
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 84 place count 80 transition count 202
Iterating global reduction 3 with 4 rules applied. Total rules applied 88 place count 80 transition count 202
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 90 place count 78 transition count 198
Iterating global reduction 3 with 2 rules applied. Total rules applied 92 place count 78 transition count 198
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 94 place count 76 transition count 194
Iterating global reduction 3 with 2 rules applied. Total rules applied 96 place count 76 transition count 194
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 97 place count 75 transition count 192
Iterating global reduction 3 with 1 rules applied. Total rules applied 98 place count 75 transition count 192
Applied a total of 98 rules in 23 ms. Remains 75 /120 variables (removed 45) and now considering 192/303 (removed 111) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23 ms. Remains : 75/120 places, 192/303 transitions.
[2026-05-25 10:14:23] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5] Max Struct:[+inf]
[2026-05-25 10:14:23] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
// Phase 1: matrix 117 rows 75 cols
[2026-05-25 10:14:23] [INFO ] Computed 3 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[5] Max Struct:[+inf]
RANDOM walk for 1000005 steps (2 resets) in 1143 ms. (874 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 608 ms. (1642 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[956] Max Struct:[+inf]
[2026-05-25 10:14:25] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:25] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:25] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:14:25] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:14:25] [INFO ] [Real]Added 17 Read/Feed constraints in 11 ms returned sat
[2026-05-25 10:14:25] [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 10:14:25] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:25] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:14:25] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:14:25] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 5 ms.
[2026-05-25 10:14:25] [INFO ] Added : 7 causal constraints over 4 iterations in 32 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[956] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[956] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:14:26] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:26] [INFO ] Implicit Places using invariants in 67 ms returned []
[2026-05-25 10:14:26] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:26] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:14:26] [INFO ] Implicit Places using invariants and state equation in 151 ms returned []
Implicit Place search using SMT with State Equation took 229 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:14:26] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:14:26] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:26] [INFO ] Invariant cache hit.
[2026-05-25 10:14:26] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3470 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:32] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 1/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 286 constraints, problems are : Problem set: 0 solved, 190 unsolved in 10538 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 14046ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 14047ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14284 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:14:40] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[956] Max Struct:[+inf]
[2026-05-25 10:14:40] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:40] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[956] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1078 ms. (926 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 609 ms. (1639 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1003] Max Struct:[+inf]
[2026-05-25 10:14:42] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:42] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:42] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:14:42] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:14:42] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:14:42] [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 10:14:42] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:42] [INFO ] [Nat]Absence check using state equation in 19 ms returned sat
[2026-05-25 10:14:42] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:14:42] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 6 ms.
[2026-05-25 10:14:42] [INFO ] Added : 7 causal constraints over 4 iterations in 48 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1003] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1003] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:14:43] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:43] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 10:14:43] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:14:43] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:14:43] [INFO ] Implicit Places using invariants and state equation in 168 ms returned []
Implicit Place search using SMT with State Equation took 263 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:14:43] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:14:43] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:43] [INFO ] Invariant cache hit.
[2026-05-25 10:14:43] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3501 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:50] [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) 0/192 variables, 1/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 286 constraints, problems are : Problem set: 0 solved, 190 unsolved in 10724 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 14270ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 14270ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14540 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:14:58] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[1003] Max Struct:[+inf]
[2026-05-25 10:14:58] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:58] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1003] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1035 ms. (965 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 612 ms. (1631 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1003] Max Struct:[+inf]
[2026-05-25 10:14:59] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:14:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:14:59] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:14:59] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:14:59] [INFO ] [Real]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:14:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:14:59] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:14:59] [INFO ] [Nat]Added 17 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:14:59] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 6 ms.
[2026-05-25 10:15:00] [INFO ] Added : 7 causal constraints over 4 iterations in 34 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1003] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1003] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:15:01] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:01] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 10:15:01] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:01] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:15:01] [INFO ] Implicit Places using invariants and state equation in 155 ms returned []
Implicit Place search using SMT with State Equation took 239 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:15:01] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:15:01] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:01] [INFO ] Invariant cache hit.
[2026-05-25 10:15:01] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3556 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:07] [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) 0/192 variables, 1/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 286 constraints, problems are : Problem set: 0 solved, 190 unsolved in 10926 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 14520ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 14520ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14768 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:15:15] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[1003] Max Struct:[+inf]
[2026-05-25 10:15:15] [INFO ] Flatten gal took : 14 ms
[2026-05-25 10:15:15] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:15:15] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8914493024399420271.gal : 1 ms
[2026-05-25 10:15:15] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15775384658977220052.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/ReachabilityCardinality8914493024399420271.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15775384658977220052.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/ReachabilityCardinality15775384658977220052.prop.
RANDOM walk for 40001 steps (8 resets) in 134 ms. (296 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1038
BEST_FIRST walk for 40004 steps (8 resets) in 51 ms. (769 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1038 after 153135
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :153135 after 1.6579e+08
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.6579e+08 after 2.22957e+12
Interrupted probabilistic random walk after 2060567 steps, run timeout after 3001 ms. (steps per millisecond=686 ) properties seen :0 out of 1
Probabilistic random walk after 2060567 steps, saw 1282608 distinct states, run finished after 3001 ms. (steps per millisecond=686 ) properties seen :0
[2026-05-25 10:15:18] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:18] [INFO ] Invariant cache hit.
[2026-05-25 10:15:18] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 3/79 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 90/169 variables, 50/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 10/185 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/189 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/189 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/192 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 95 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 3/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/79 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 90/169 variables, 50/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 10/185 variables, 9/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 4/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 3/192 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 105 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 211ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 724 ms.
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 75/75 places, 192/192 transitions.
RANDOM walk for 40003 steps (8 resets) in 97 ms. (408 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 31 ms. (1250 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2081741 steps, run timeout after 3001 ms. (steps per millisecond=693 ) properties seen :0 out of 1
Probabilistic random walk after 2081741 steps, saw 1295789 distinct states, run finished after 3001 ms. (steps per millisecond=693 ) properties seen :0
[2026-05-25 10:15:22] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:22] [INFO ] Invariant cache hit.
[2026-05-25 10:15:22] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 3/79 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 90/169 variables, 50/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 10/185 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/189 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/189 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/192 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 89 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 3/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/79 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 90/169 variables, 50/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 10/185 variables, 9/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 4/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 3/192 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 196 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 304ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 720 ms.
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:15:23] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:24] [INFO ] Implicit Places using invariants in 74 ms returned []
[2026-05-25 10:15:24] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:15:24] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:15:24] [INFO ] Implicit Places using invariants and state equation in 158 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 10:15:24] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:15:24] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:15:24] [INFO ] Invariant cache hit.
[2026-05-25 10:15:24] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3391 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:30] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 1/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.22957e+12 after 5.06993e+17
At refinement iteration 7 (OVERLAPS) 0/192 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 286 constraints, problems are : Problem set: 0 solved, 190 unsolved in 10537 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 13980ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 13980ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14241 ms. Remains : 75/75 places, 192/192 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 75 transitions
Reduce isomorphic transitions removed 75 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 75 transition count 111
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 87 place count 69 transition count 111
Performed 11 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 11 Pre rules applied. Total rules applied 87 place count 69 transition count 100
Deduced a syphon composed of 11 places in 0 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 2 with 22 rules applied. Total rules applied 109 place count 58 transition count 100
Performed 17 Post agglomeration using F-continuation condition.Transition count delta: 17
Deduced a syphon composed of 17 places in 1 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 143 place count 41 transition count 83
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 150 place count 34 transition count 69
Iterating global reduction 2 with 7 rules applied. Total rules applied 157 place count 34 transition count 69
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 164 place count 27 transition count 55
Iterating global reduction 2 with 7 rules applied. Total rules applied 171 place count 27 transition count 55
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 178 place count 20 transition count 41
Iterating global reduction 2 with 7 rules applied. Total rules applied 185 place count 20 transition count 41
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 192 place count 20 transition count 34
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 192 place count 20 transition count 33
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 194 place count 19 transition count 33
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 196 place count 18 transition count 33
Drop transitions (Redundant composition of simpler transitions.) removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 3 with 3 rules applied. Total rules applied 199 place count 18 transition count 30
Applied a total of 199 rules in 14 ms. Remains 18 /75 variables (removed 57) and now considering 30/192 (removed 162) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 30 rows 18 cols
[2026-05-25 10:15:38] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:15:38] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:15:38] [INFO ] After 151ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:15:38] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:15:38] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:15:38] [INFO ] After 184ms 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 10:15:38] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:15:38] [INFO ] After 7ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:15:38] [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 10:15:38] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:15:38] [INFO ] After 29ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:15:38] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:15:38] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:15:38] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2420062631940296944.gal : 0 ms
[2026-05-25 10:15:38] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13498793570393188003.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/ReachabilityCardinality2420062631940296944.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13498793570393188003.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/ReachabilityCardinality13498793570393188003.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 57539
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :57539 after 3.245e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :3.245e+06 after 3.70307e+08
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :3.70307e+08 after 1.10371e+09
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.10371e+09 after 2.56982e+09
Detected timeout of ITS tools.
[2026-05-25 10:15:53] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:15:53] [INFO ] Applying decomposition
[2026-05-25 10:15:53] [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/graph7872095401040061970.txt' '-o' '/tmp/graph7872095401040061970.bin' '-w' '/tmp/graph7872095401040061970.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph7872095401040061970.bin' '-l' '-1' '-v' '-w' '/tmp/graph7872095401040061970.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:15:53] [INFO ] Decomposing Gal with order
[2026-05-25 10:15:53] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:15:53] [INFO ] Removed a total of 22 redundant transitions.
[2026-05-25 10:15:53] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:15:53] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 0 ms.
[2026-05-25 10:15:53] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13608579046623032014.gal : 0 ms
[2026-05-25 10:15:53] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4898418754790347489.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/ReachabilityCardinality13608579046623032014.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4898418754790347489.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/ReachabilityCardinality4898418754790347489.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 82818
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :82818 after 1.46458e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.46458e+06 after 2.27928e+11
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.27928e+11 after 1.07156e+13
Detected timeout of ITS tools.
[2026-05-25 10:16:05] [INFO ] Flatten gal took : 18 ms
[2026-05-25 10:16:05] [INFO ] Applying decomposition
[2026-05-25 10:16:06] [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/graph17296617667376583814.txt' '-o' '/tmp/graph17296617667376583814.bin' '-w' '/tmp/graph17296617667376583814.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph17296617667376583814.bin' '-l' '-1' '-v' '-w' '/tmp/graph17296617667376583814.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:16:06] [INFO ] Decomposing Gal with order
[2026-05-25 10:16:06] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:16:06] [INFO ] Removed a total of 323 redundant transitions.
[2026-05-25 10:16:06] [INFO ] Flatten gal took : 14 ms
[2026-05-25 10:16:06] [INFO ] Fuse similar labels procedure discarded/fused a total of 90 labels/synchronizations in 7 ms.
[2026-05-25 10:16:06] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14930074777105343368.gal : 1 ms
[2026-05-25 10:16:06] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5807487102841977576.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/ReachabilityCardinality14930074777105343368.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5807487102841977576.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/ReachabilityCardinality5807487102841977576.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30345 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:[1003] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-02 in 105590 ms.
Starting property specific reduction for FunctionPointer-PT-b128-UpperBounds-03
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:16:08] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:16:08] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 13 ms. (714 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 7 ms. (1250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 10:16:08] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:16:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:16:08] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:08] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:16:08] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:16:08] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:16:08] [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 10:16:08] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:08] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:16:08] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:08] [INFO ] Deduced a trap composed of 18 places in 66 ms of which 4 ms to minimize.
[2026-05-25 10:16:08] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 78 ms
[2026-05-25 10:16:08] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:16:08] [INFO ] Added : 21 causal constraints over 5 iterations in 82 ms. Result :sat
Minimization took 42 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[7] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[7] Max Struct:[+inf]
Support contains 1 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 8 places :
Symmetric choice reduction at 1 with 8 rule applications. Total rules 14 place count 109 transition count 274
Iterating global reduction 1 with 8 rules applied. Total rules applied 22 place count 109 transition count 274
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 28 place count 109 transition count 268
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 34 place count 103 transition count 254
Iterating global reduction 2 with 6 rules applied. Total rules applied 40 place count 103 transition count 254
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 44 place count 103 transition count 250
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 48 place count 99 transition count 240
Iterating global reduction 3 with 4 rules applied. Total rules applied 52 place count 99 transition count 240
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 56 place count 95 transition count 230
Iterating global reduction 3 with 4 rules applied. Total rules applied 60 place count 95 transition count 230
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 64 place count 91 transition count 222
Iterating global reduction 3 with 4 rules applied. Total rules applied 68 place count 91 transition count 222
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 72 place count 87 transition count 214
Iterating global reduction 3 with 4 rules applied. Total rules applied 76 place count 87 transition count 214
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 79 place count 84 transition count 208
Iterating global reduction 3 with 3 rules applied. Total rules applied 82 place count 84 transition count 208
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 84 place count 82 transition count 204
Iterating global reduction 3 with 2 rules applied. Total rules applied 86 place count 82 transition count 204
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 88 place count 80 transition count 200
Iterating global reduction 3 with 2 rules applied. Total rules applied 90 place count 80 transition count 200
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 91 place count 79 transition count 198
Iterating global reduction 3 with 1 rules applied. Total rules applied 92 place count 79 transition count 198
Applied a total of 92 rules in 19 ms. Remains 79 /120 variables (removed 41) and now considering 198/303 (removed 105) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19 ms. Remains : 79/120 places, 198/303 transitions.
[2026-05-25 10:16:08] [INFO ] Flow matrix only has 122 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 {31=1, 60=1, 106=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 59=1, 105=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 :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 10:16:09] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
// Phase 1: matrix 122 rows 79 cols
[2026-05-25 10:16:09] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[7] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1046 ms. (955 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 648 ms. (1540 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[702] Max Struct:[+inf]
[2026-05-25 10:16:10] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:10] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:10] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:16:10] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:16:10] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:10] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:10] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:16:10] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:16:10] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 67 transitions) in 5 ms.
[2026-05-25 10:16:10] [INFO ] Added : 15 causal constraints over 4 iterations in 40 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[702] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[702] Max Struct:[+inf]
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 79/79 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:16:12] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:12] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 10:16:12] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:12] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:16:12] [INFO ] Implicit Places using invariants and state equation in 173 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 10:16:12] [INFO ] Redundant transitions in 1 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:16:12] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:12] [INFO ] Invariant cache hit.
[2026-05-25 10:16:12] [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) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 196 unsolved in 3131 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 196/296 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:18] [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 10:16:18] [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 10:16:18] [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 10:16:18] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:18] [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) 0/201 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:23] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 1/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/201 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 8 (OVERLAPS) 0/201 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 302 constraints, problems are : Problem set: 0 solved, 196 unsolved in 17073 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 20257ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 20258ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20519 ms. Remains : 79/79 places, 198/198 transitions.
[2026-05-25 10:16:32] [INFO ] Flow matrix only has 122 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 {31=1, 60=1, 106=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 59=1, 105=1, 120=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 :[11]
Current structural bounds on expressions (after cover walk) : Max Seen:[702] Max Struct:[+inf]
[2026-05-25 10:16:32] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:32] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[702] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1123 ms. (889 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:[702] Max Struct:[+inf]
[2026-05-25 10:16:34] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:34] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:16:34] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:16:34] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:16:34] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:16:34] [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 10:16:34] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:16:34] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:16:34] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:16:34] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 67 transitions) in 6 ms.
[2026-05-25 10:16:34] [INFO ] Added : 15 causal constraints over 4 iterations in 41 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[702] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[702] Max Struct:[+inf]
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 79/79 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:16:35] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:35] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:35] [INFO ] Implicit Places using invariants in 75 ms returned []
[2026-05-25 10:16:35] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:35] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:36] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:16:36] [INFO ] Implicit Places using invariants and state equation in 178 ms returned []
Implicit Place search using SMT with State Equation took 253 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:16:36] [INFO ] Redundant transitions in 0 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:16:36] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:36] [INFO ] Invariant cache hit.
[2026-05-25 10:16:36] [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) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 196 unsolved in 3309 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 196/296 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:42] [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 10:16:42] [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 10:16:42] [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 10:16:42] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:42] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/201 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:47] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 1/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/201 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 8 (OVERLAPS) 0/201 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 302 constraints, problems are : Problem set: 0 solved, 196 unsolved in 17137 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 20488ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 20489ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20758 ms. Remains : 79/79 places, 198/198 transitions.
[2026-05-25 10:16:56] [INFO ] Flow matrix only has 122 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 {31=1, 60=1, 106=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 59=1, 105=1, 120=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 68 ms. (steps per millisecond=147 ) properties (out of 1) seen :[9]
Current structural bounds on expressions (after cover walk) : Max Seen:[702] Max Struct:[+inf]
RANDOM walk for 40001 steps (8 resets) in 95 ms. (416 steps per ms) remains 1/1 properties
[2026-05-25 10:16:56] [INFO ] Flatten gal took : 49 ms
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 1/1 properties
[2026-05-25 10:16:56] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:16:56] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14907691948655477161.gal : 2 ms
[2026-05-25 10:16:56] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4847584678770732081.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/ReachabilityCardinality14907691948655477161.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4847584678770732081.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/ReachabilityCardinality4847584678770732081.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1040
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1040 after 155244
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :155244 after 1.77406e+08
Interrupted probabilistic random walk after 2005255 steps, run timeout after 3001 ms. (steps per millisecond=668 ) properties seen :0 out of 1
Probabilistic random walk after 2005255 steps, saw 1248059 distinct states, run finished after 3001 ms. (steps per millisecond=668 ) properties seen :0
[2026-05-25 10:16:59] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:16:59] [INFO ] Invariant cache hit.
[2026-05-25 10:16:59] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 7/82 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/82 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/182 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/182 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/188 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/188 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/198 variables, 10/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/198 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 3/201 variables, 2/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 1 unsolved in 79 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/75 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/82 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/82 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 100/182 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/182 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/188 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/188 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 10/198 variables, 10/99 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 10:17:00] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/198 variables, 1/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/198 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/201 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/201 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/201 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 143 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 235ms 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 872 ms.
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 7 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 8 ms. Remains : 79/79 places, 198/198 transitions.
RANDOM walk for 40000 steps (8 resets) in 48 ms. (816 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 24 ms. (1600 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2042070 steps, run timeout after 3001 ms. (steps per millisecond=680 ) properties seen :0 out of 1
Probabilistic random walk after 2042070 steps, saw 1270975 distinct states, run finished after 3001 ms. (steps per millisecond=680 ) properties seen :0
[2026-05-25 10:17:04] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:17:04] [INFO ] Invariant cache hit.
[2026-05-25 10:17:04] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 7/82 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/82 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/182 variables, 57/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/182 variables, 17/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/188 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/188 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 10/198 variables, 10/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/198 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 3/201 variables, 2/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 1 unsolved in 107 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 71/75 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/75 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 7/82 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/82 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/82 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 100/182 variables, 57/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/182 variables, 17/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/182 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/188 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/188 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 10/198 variables, 10/99 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 10:17:04] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/198 variables, 1/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/198 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/201 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/201 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/201 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 163 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 274ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 876 ms.
Support contains 1 out of 79 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 79/79 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 79/79 places, 198/198 transitions.
Applied a total of 0 rules in 6 ms. Remains 79 /79 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:17:05] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:17:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:05] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 10:17:05] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:17:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:17:05] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:17:05] [INFO ] Implicit Places using invariants and state equation in 174 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 10:17:05] [INFO ] Redundant transitions in 1 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:17:05] [INFO ] Flow matrix only has 122 transitions (discarded 76 similar events)
[2026-05-25 10:17:05] [INFO ] Invariant cache hit.
[2026-05-25 10:17:05] [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) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/201 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 201/201 variables, and 100 constraints, problems are : Problem set: 0 solved, 196 unsolved in 3028 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 122/201 variables, 79/82 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/201 variables, 18/100 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/201 variables, 196/296 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:11] [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 10:17:11] [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 10:17:11] [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 10:17:11] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:11] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/201 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:16] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 1/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.78305e+12 after 8.75832e+17
At refinement iteration 7 (INCLUDED_ONLY) 0/201 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 8 (OVERLAPS) 0/201 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 201/201 variables, and 302 constraints, problems are : Problem set: 0 solved, 196 unsolved in 17120 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 79/79 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 20192ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 20193ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20451 ms. Remains : 79/79 places, 198/198 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 76 transitions
Reduce isomorphic transitions removed 76 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 84 rules applied. Total rules applied 84 place count 79 transition count 114
Reduce places removed 8 places and 0 transitions.
Iterating post reduction 1 with 8 rules applied. Total rules applied 92 place count 71 transition count 114
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 13 Pre rules applied. Total rules applied 92 place count 71 transition count 101
Deduced a syphon composed of 13 places in 0 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 2 with 26 rules applied. Total rules applied 118 place count 58 transition count 101
Performed 16 Post agglomeration using F-continuation condition.Transition count delta: 16
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 150 place count 42 transition count 85
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 157 place count 35 transition count 71
Iterating global reduction 2 with 7 rules applied. Total rules applied 164 place count 35 transition count 71
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 171 place count 28 transition count 57
Iterating global reduction 2 with 7 rules applied. Total rules applied 178 place count 28 transition count 57
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 185 place count 21 transition count 43
Iterating global reduction 2 with 7 rules applied. Total rules applied 192 place count 21 transition count 43
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 199 place count 21 transition count 36
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 199 place count 21 transition count 35
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 201 place count 20 transition count 35
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -1
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 203 place count 19 transition count 36
Applied a total of 203 rules in 13 ms. Remains 19 /79 variables (removed 60) and now considering 36/198 (removed 162) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 36 rows 19 cols
[2026-05-25 10:17:25] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:17:25] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:17:25] [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 10:17:25] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:25] [INFO ] After 10ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:17:25] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:17:25] [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 10:17:25] [INFO ] After 5ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:17:25] [INFO ] After 42ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:17:25] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:17:25] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:17:25] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11073360114248697282.gal : 0 ms
[2026-05-25 10:17:25] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3894472908932575321.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/ReachabilityCardinality11073360114248697282.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3894472908932575321.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/ReachabilityCardinality3894472908932575321.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 441230
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :441230 after 6.32845e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :6.32845e+09 after 5.42758e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.42758e+10 after 2.91075e+11
Detected timeout of ITS tools.
[2026-05-25 10:17:40] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:17:40] [INFO ] Applying decomposition
[2026-05-25 10:17:40] [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/graph17436197524199973182.txt' '-o' '/tmp/graph17436197524199973182.bin' '-w' '/tmp/graph17436197524199973182.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph17436197524199973182.bin' '-l' '-1' '-v' '-w' '/tmp/graph17436197524199973182.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:17:40] [INFO ] Decomposing Gal with order
[2026-05-25 10:17:40] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:17:40] [INFO ] Removed a total of 42 redundant transitions.
[2026-05-25 10:17:40] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:17:40] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 10:17:40] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9563991037574067619.gal : 0 ms
[2026-05-25 10:17:40] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality16788098359390088464.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/ReachabilityCardinality9563991037574067619.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality16788098359390088464.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/ReachabilityCardinality16788098359390088464.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
Detected timeout of ITS tools.
[2026-05-25 10:17:46] [INFO ] Flatten gal took : 6 ms
[2026-05-25 10:17:46] [INFO ] Applying decomposition
[2026-05-25 10:17:46] [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/graph10289465447464041518.txt' '-o' '/tmp/graph10289465447464041518.bin' '-w' '/tmp/graph10289465447464041518.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10289465447464041518.bin' '-l' '-1' '-v' '-w' '/tmp/graph10289465447464041518.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:17:46] [INFO ] Decomposing Gal with order
[2026-05-25 10:17:46] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:17:46] [INFO ] Removed a total of 334 redundant transitions.
[2026-05-25 10:17:46] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:17:46] [INFO ] Fuse similar labels procedure discarded/fused a total of 102 labels/synchronizations in 5 ms.
[2026-05-25 10:17:46] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2828251997370741122.gal : 1 ms
[2026-05-25 10:17:46] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6511798407554825696.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/ReachabilityCardinality2828251997370741122.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6511798407554825696.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/ReachabilityCardinality6511798407554825696.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30173 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[702] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-03 in 107253 ms.
Starting property specific reduction for FunctionPointer-PT-b128-UpperBounds-05
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:17:55] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:17:55] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 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:[7] Max Struct:[+inf]
[2026-05-25 10:17:55] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:17:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:17:55] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:55] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:17:55] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:17:55] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:17:55] [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 10:17:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:55] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:17:55] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:56] [INFO ] Deduced a trap composed of 18 places in 72 ms of which 5 ms to minimize.
[2026-05-25 10:17:56] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 87 ms
[2026-05-25 10:17:56] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 11 ms.
[2026-05-25 10:17:56] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[7] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[7] Max Struct:[+inf]
Support contains 1 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Discarding 8 places :
Symmetric choice reduction at 0 with 8 rule applications. Total rules 8 place count 112 transition count 279
Iterating global reduction 0 with 8 rules applied. Total rules applied 16 place count 112 transition count 279
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 22 place count 112 transition count 273
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 29 place count 105 transition count 257
Iterating global reduction 1 with 7 rules applied. Total rules applied 36 place count 105 transition count 257
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 40 place count 105 transition count 253
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 45 place count 100 transition count 241
Iterating global reduction 2 with 5 rules applied. Total rules applied 50 place count 100 transition count 241
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 55 place count 95 transition count 229
Iterating global reduction 2 with 5 rules applied. Total rules applied 60 place count 95 transition count 229
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 65 place count 90 transition count 219
Iterating global reduction 2 with 5 rules applied. Total rules applied 70 place count 90 transition count 219
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 75 place count 85 transition count 209
Iterating global reduction 2 with 5 rules applied. Total rules applied 80 place count 85 transition count 209
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 84 place count 81 transition count 201
Iterating global reduction 2 with 4 rules applied. Total rules applied 88 place count 81 transition count 201
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 90 place count 79 transition count 197
Iterating global reduction 2 with 2 rules applied. Total rules applied 92 place count 79 transition count 197
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 94 place count 77 transition count 193
Iterating global reduction 2 with 2 rules applied. Total rules applied 96 place count 77 transition count 193
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 97 place count 76 transition count 191
Iterating global reduction 2 with 1 rules applied. Total rules applied 98 place count 76 transition count 191
Applied a total of 98 rules in 16 ms. Remains 76 /120 variables (removed 44) and now considering 191/303 (removed 112) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 76/120 places, 191/303 transitions.
[2026-05-25 10:17:56] [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 37 ms. (steps per millisecond=270 ) properties (out of 1) seen :[14]
Current structural bounds on expressions (after cover walk) : Max Seen:[14] Max Struct:[+inf]
[2026-05-25 10:17:56] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
// Phase 1: matrix 117 rows 76 cols
[2026-05-25 10:17:56] [INFO ] Computed 3 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[14] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 900 ms. (1109 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 637 ms. (1567 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[225] Max Struct:[+inf]
[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.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:57] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:17:57] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:17:57] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:17:57] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:17:57] [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 10:17:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:17:57] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:17:57] [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 10:17:58] [INFO ] Deduced a trap composed of 13 places in 55 ms of which 4 ms to minimize.
[2026-05-25 10:17:58] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 69 ms
[2026-05-25 10:17:58] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 10 ms.
[2026-05-25 10:17:58] [INFO ] Added : 6 causal constraints over 3 iterations in 35 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[225] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[225] 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 10:17:58] [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 74 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 174 ms returned []
Implicit Place search using SMT with State Equation took 248 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:17:58] [INFO ] Redundant transitions in 1 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 2091 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 10:18:03] [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 10:18:03] [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 10:18:04] [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 10:18:05] [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, 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 10:18:07] [INFO ] Deduced a trap along path composed of 3 places in 19 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:12] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/193 variables, 1/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/193 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 9 (OVERLAPS) 0/193 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 292 constraints, problems are : Problem set: 0 solved, 189 unsolved in 20482 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: 6/6 constraints]
After SMT, in 22614ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 22614ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22869 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:18:21] [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 39 ms. (steps per millisecond=256 ) properties (out of 1) seen :[9]
Current structural bounds on expressions (after cover walk) : Max Seen:[225] Max Struct:[+inf]
[2026-05-25 10:18:21] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:21] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[225] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 830 ms. (1203 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 601 ms. (1661 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[246] Max Struct:[+inf]
[2026-05-25 10:18:22] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:22] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:18:22] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:18:22] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:18:22] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:22] [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 10:18:22] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:22] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:18:22] [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 10:18:22] [INFO ] Deduced a trap composed of 13 places in 56 ms of which 5 ms to minimize.
[2026-05-25 10:18:22] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 71 ms
[2026-05-25 10:18:22] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 13 ms.
[2026-05-25 10:18:22] [INFO ] Added : 6 causal constraints over 3 iterations in 39 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[246] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[246] 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 10:18:23] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:23] [INFO ] Implicit Places using invariants in 72 ms returned []
[2026-05-25 10:18:23] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:23] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:18:23] [INFO ] Implicit Places using invariants and state equation in 163 ms returned []
Implicit Place search using SMT with State Equation took 235 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:18:23] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:18:23] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:23] [INFO ] Invariant cache hit.
[2026-05-25 10:18:23] [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) 0/76 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 2133 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 10:18:28] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:28] [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 10:18:29] [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 10:18:29] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/193 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 10:18:32] [INFO ] Deduced a trap along path composed of 3 places in 25 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:37] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/193 variables, 1/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/193 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 9 (OVERLAPS) 0/193 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 292 constraints, problems are : Problem set: 0 solved, 189 unsolved in 20720 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: 6/6 constraints]
After SMT, in 22895ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 22896ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23142 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:18:46] [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 39 ms. (steps per millisecond=256 ) properties (out of 1) seen :[12]
Current structural bounds on expressions (after cover walk) : Max Seen:[246] Max Struct:[+inf]
[2026-05-25 10:18:46] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:46] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[246] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1102 ms. (906 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 609 ms. (1639 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[246] Max Struct:[+inf]
[2026-05-25 10:18:48] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:48] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:48] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:18:48] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:18:48] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:18:48] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:18:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:18:48] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:18:48] [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 10:18:48] [INFO ] Deduced a trap composed of 13 places in 60 ms of which 5 ms to minimize.
[2026-05-25 10:18:48] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 72 ms
[2026-05-25 10:18:48] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 7 ms.
[2026-05-25 10:18:48] [INFO ] Added : 6 causal constraints over 3 iterations in 34 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[246] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[246] 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 10:18:48] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:48] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 10:18:48] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:48] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:18:48] [INFO ] Implicit Places using invariants and state equation in 164 ms returned []
Implicit Place search using SMT with State Equation took 234 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:18:48] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 10:18:48] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:18:48] [INFO ] Invariant cache hit.
[2026-05-25 10:18:48] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:54] [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 10:18:54] [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 10:18:54] [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 10:18:55] [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) 0/193 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 10:18:57] [INFO ] Deduced a trap along path composed of 3 places in 18 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
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:02] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/193 variables, 1/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/193 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 9 (OVERLAPS) 0/193 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 292 constraints, problems are : Problem set: 0 solved, 189 unsolved in 20736 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: 6/6 constraints]
After SMT, in 22992ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 22993ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23233 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 10:19:11] [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 35 ms. (steps per millisecond=285 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[246] Max Struct:[+inf]
[2026-05-25 10:19:11] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:19:11] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:19:11] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2851231955179448692.gal : 2 ms
[2026-05-25 10:19:11] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4572194072357110156.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/ReachabilityCardinality2851231955179448692.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4572194072357110156.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 40006 steps (8 resets) in 70 ms. (563 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality4572194072357110156.prop.
BEST_FIRST walk for 40004 steps (8 resets) in 25 ms. (1538 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 2069161 steps, run timeout after 3001 ms. (steps per millisecond=689 ) properties seen :0 out of 1
Probabilistic random walk after 2069161 steps, saw 1288021 distinct states, run finished after 3001 ms. (steps per millisecond=689 ) properties seen :0
[2026-05-25 10:19:14] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 10:19:14] [INFO ] Invariant cache hit.
[2026-05-25 10:19:14] [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 86 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 10:19:15] [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 10:19:15] [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 10:19:15] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:15] [INFO ] Deduced a trap along path composed of 3 places in 14 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
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/190 variables, 2/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/190 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 3/193 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/193 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/193 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 210 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: 4/4 constraints]
After SMT, in 313ms problems are : Problem set: 0 solved, 1 unsolved
Finished Parikh walk after 1369 steps, including 0 resets, run visited all 1 properties in 4 ms. (steps per millisecond=342 )
Parikh walk visited 1 properties in 7 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:[246] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-05 in 79512 ms.
Starting property specific reduction for FunctionPointer-PT-b128-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 10:19:15] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:19:15] [INFO ] Computed 3 invariants in 10 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10003 steps (2 resets) in 15 ms. (625 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:[12] Max Struct:[+inf]
[2026-05-25 10:19:15] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:19:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:19:15] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:15] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:19:15] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:19:15] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:19:15] [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 10:19:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:15] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 10:19:15] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:15] [INFO ] Deduced a trap composed of 18 places in 65 ms of which 4 ms to minimize.
[2026-05-25 10:19:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 81 ms
[2026-05-25 10:19:15] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 13 ms.
[2026-05-25 10:19:15] [INFO ] Added : 14 causal constraints over 4 iterations in 60 ms. Result :sat
Minimization took 39 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12] Max Struct:[+inf]
Support contains 1 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 276
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 276
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 24 place count 110 transition count 272
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 29 place count 105 transition count 260
Iterating global reduction 2 with 5 rules applied. Total rules applied 34 place count 105 transition count 260
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 39 place count 100 transition count 248
Iterating global reduction 2 with 5 rules applied. Total rules applied 44 place count 100 transition count 248
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 49 place count 95 transition count 236
Iterating global reduction 2 with 5 rules applied. Total rules applied 54 place count 95 transition count 236
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 59 place count 90 transition count 226
Iterating global reduction 2 with 5 rules applied. Total rules applied 64 place count 90 transition count 226
Discarding 5 places :
Symmetric choice reduction at 2 with 5 rule applications. Total rules 69 place count 85 transition count 216
Iterating global reduction 2 with 5 rules applied. Total rules applied 74 place count 85 transition count 216
Discarding 4 places :
Symmetric choice reduction at 2 with 4 rule applications. Total rules 78 place count 81 transition count 208
Iterating global reduction 2 with 4 rules applied. Total rules applied 82 place count 81 transition count 208
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 84 place count 79 transition count 204
Iterating global reduction 2 with 2 rules applied. Total rules applied 86 place count 79 transition count 204
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 88 place count 77 transition count 200
Iterating global reduction 2 with 2 rules applied. Total rules applied 90 place count 77 transition count 200
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 91 place count 76 transition count 198
Iterating global reduction 2 with 1 rules applied. Total rules applied 92 place count 76 transition count 198
Applied a total of 92 rules in 15 ms. Remains 76 /120 variables (removed 44) and now considering 198/303 (removed 105) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 76/120 places, 198/303 transitions.
[2026-05-25 10:19:15] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 57=1, 86=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 58=1, 103=1, 117=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 37 ms. (steps per millisecond=270 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[12] Max Struct:[+inf]
[2026-05-25 10:19:15] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
// Phase 1: matrix 118 rows 76 cols
[2026-05-25 10:19:15] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[12] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1132 ms. (882 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 570 ms. (1751 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[569] Max Struct:[+inf]
[2026-05-25 10:19:17] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:17] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:17] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:19:17] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:19:17] [INFO ] [Real]Added 15 Read/Feed constraints in 11 ms returned sat
[2026-05-25 10:19:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:19:17] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:19:17] [INFO ] [Nat]Added 15 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:17] [INFO ] Deduced a trap composed of 13 places in 57 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:17] [INFO ] Deduced a trap composed of 20 places in 57 ms of which 5 ms to minimize.
[2026-05-25 10:19:17] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 132 ms
[2026-05-25 10:19:17] [INFO ] Computed and/alt/rep : 60/163/51 causal constraints (skipped 65 transitions) in 6 ms.
[2026-05-25 10:19:17] [INFO ] Added : 29 causal constraints over 6 iterations in 54 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[569] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[569] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:19:19] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:19] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 10:19:19] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:19] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:19:19] [INFO ] Implicit Places using invariants and state equation in 167 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 10:19:19] [INFO ] Redundant transitions in 0 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:19:19] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:19] [INFO ] Invariant cache hit.
[2026-05-25 10:19:19] [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) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 94 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4320 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 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, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 196/290 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:27] [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) 0/194 variables, 1/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 291 constraints, problems are : Problem set: 0 solved, 196 unsolved in 12528 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 16887ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 16889ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17147 ms. Remains : 76/76 places, 198/198 transitions.
[2026-05-25 10:19:36] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 57=1, 86=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 58=1, 103=1, 117=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[569] Max Struct:[+inf]
[2026-05-25 10:19:36] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:36] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[569] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1103 ms. (905 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 555 ms. (1798 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[593] Max Struct:[+inf]
[2026-05-25 10:19:38] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:38] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:38] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:19:38] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:19:38] [INFO ] [Real]Added 15 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:19:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:38] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:38] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:19:38] [INFO ] [Nat]Added 15 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:38] [INFO ] Deduced a trap composed of 13 places in 73 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:38] [INFO ] Deduced a trap composed of 20 places in 51 ms of which 5 ms to minimize.
[2026-05-25 10:19:38] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 138 ms
[2026-05-25 10:19:38] [INFO ] Computed and/alt/rep : 60/163/51 causal constraints (skipped 65 transitions) in 5 ms.
[2026-05-25 10:19:38] [INFO ] Added : 29 causal constraints over 6 iterations in 53 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[593] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[593] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:19:39] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:39] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 10:19:39] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:39] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:19:39] [INFO ] Implicit Places using invariants and state equation in 186 ms returned []
Implicit Place search using SMT with State Equation took 260 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:19:39] [INFO ] Redundant transitions in 1 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:19:39] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:39] [INFO ] Invariant cache hit.
[2026-05-25 10:19:39] [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) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 94 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4259 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 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, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 196/290 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:48] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 1/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 291 constraints, problems are : Problem set: 0 solved, 196 unsolved in 12525 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 16824ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 16825ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17094 ms. Remains : 76/76 places, 198/198 transitions.
[2026-05-25 10:19:56] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 57=1, 86=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 58=1, 103=1, 117=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[593] Max Struct:[+inf]
[2026-05-25 10:19:56] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:56] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[593] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1103 ms. (905 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 556 ms. (1795 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[593] Max Struct:[+inf]
[2026-05-25 10:19:58] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:19:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:58] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:58] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:19:58] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:19:58] [INFO ] [Real]Added 15 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:19:58] [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 10:19:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:19:58] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:19:58] [INFO ] [Nat]Added 15 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:58] [INFO ] Deduced a trap composed of 13 places in 53 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:58] [INFO ] Deduced a trap composed of 20 places in 47 ms of which 5 ms to minimize.
[2026-05-25 10:19:58] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 112 ms
[2026-05-25 10:19:58] [INFO ] Computed and/alt/rep : 60/163/51 causal constraints (skipped 65 transitions) in 5 ms.
[2026-05-25 10:19:58] [INFO ] Added : 29 causal constraints over 6 iterations in 58 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[593] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[593] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:20:00] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:00] [INFO ] Implicit Places using invariants in 77 ms returned []
[2026-05-25 10:20:00] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:00] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:20:00] [INFO ] Implicit Places using invariants and state equation in 176 ms returned []
Implicit Place search using SMT with State Equation took 267 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:20:00] [INFO ] Redundant transitions in 0 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:20:00] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:00] [INFO ] Invariant cache hit.
[2026-05-25 10:20:00] [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) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 94 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4227 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 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, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 196/290 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:09] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 1/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 291 constraints, problems are : Problem set: 0 solved, 196 unsolved in 12943 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 17213ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 17213ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17489 ms. Remains : 76/76 places, 198/198 transitions.
[2026-05-25 10:20:17] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 57=1, 86=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 58=1, 103=1, 117=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 34 ms. (steps per millisecond=294 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[593] Max Struct:[+inf]
[2026-05-25 10:20:17] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:20:17] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:20:17] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12509869939823269733.gal : 2 ms
[2026-05-25 10:20:17] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14170175823601379184.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/ReachabilityCardinality12509869939823269733.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14170175823601379184.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 40001 steps (8 resets) in 156 ms. (254 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality14170175823601379184.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
BEST_FIRST walk for 40003 steps (8 resets) in 27 ms. (1428 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1040
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1040 after 155244
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :155244 after 1.77406e+08
Interrupted probabilistic random walk after 2034185 steps, run timeout after 3001 ms. (steps per millisecond=677 ) properties seen :0 out of 1
Probabilistic random walk after 2034185 steps, saw 1266188 distinct states, run finished after 3001 ms. (steps per millisecond=677 ) properties seen :0
[2026-05-25 10:20:20] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:20] [INFO ] Invariant cache hit.
[2026-05-25 10:20:20] [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, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/12 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/12 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/20 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/20 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 63/83 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/83 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/83 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 8/91 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/91 variables, 4/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/91 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 91/182 variables, 52/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/182 variables, 14/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/188 variables, 1/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/188 variables, 0/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/194 variables, 8/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 94 constraints, problems are : Problem set: 0 solved, 1 unsolved in 83 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/12 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/12 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/20 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/20 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 63/83 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/83 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/83 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/83 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 8/91 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/91 variables, 4/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/91 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 91/182 variables, 52/72 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 14/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/182 variables, 0/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 6/188 variables, 1/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/188 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/194 variables, 8/95 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 10:20:21] [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 10:20:21] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:21] [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 10:20:21] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 4/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/194 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/194 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 99 constraints, problems are : Problem set: 0 solved, 1 unsolved in 186 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 281ms 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 1139 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 76/76 places, 198/198 transitions.
RANDOM walk for 40004 steps (8 resets) in 87 ms. (454 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 32 ms. (1212 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2009351 steps, run timeout after 3001 ms. (steps per millisecond=669 ) properties seen :0 out of 1
Probabilistic random walk after 2009351 steps, saw 1250729 distinct states, run finished after 3001 ms. (steps per millisecond=669 ) properties seen :0
[2026-05-25 10:20:25] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:25] [INFO ] Invariant cache hit.
[2026-05-25 10:20:25] [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, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/12 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/12 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/20 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/20 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 63/83 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/83 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/83 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 8/91 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/91 variables, 4/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/91 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 91/182 variables, 52/71 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/182 variables, 14/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 0/85 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/188 variables, 1/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/188 variables, 0/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/194 variables, 8/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 94 constraints, problems are : Problem set: 0 solved, 1 unsolved in 83 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/12 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/12 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/20 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/20 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 63/83 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/83 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/83 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/83 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 8/91 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/91 variables, 4/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/91 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 91/182 variables, 52/72 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/182 variables, 14/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/182 variables, 0/86 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 6/188 variables, 1/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/188 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/194 variables, 8/95 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 10:20:25] [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 10:20:25] [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 10:20:25] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:25] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 4/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/194 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/194 variables, 0/99 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 99 constraints, problems are : Problem set: 0 solved, 1 unsolved in 181 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 281ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1087 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 198/198 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 198/198 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 198/198 (removed 0) transitions.
[2026-05-25 10:20:26] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:26] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 10:20:26] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:20:26] [INFO ] State equation strengthened by 15 read => feed constraints.
[2026-05-25 10:20:26] [INFO ] Implicit Places using invariants and state equation in 171 ms returned []
Implicit Place search using SMT with State Equation took 264 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:20:27] [INFO ] Redundant transitions in 1 ms returned []
Running 196 sub problems to find dead transitions.
[2026-05-25 10:20:27] [INFO ] Flow matrix only has 118 transitions (discarded 80 similar events)
[2026-05-25 10:20:27] [INFO ] Invariant cache hit.
[2026-05-25 10:20:27] [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) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 94 constraints, problems are : Problem set: 0 solved, 196 unsolved in 4307 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 196 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, 196 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 15/94 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 196/290 constraints. Problems are: Problem set: 0 solved, 196 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 1/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.78305e+12 after 8.75832e+17
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/291 constraints. Problems are: Problem set: 0 solved, 196 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 291 constraints, problems are : Problem set: 0 solved, 196 unsolved in 12314 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 15/15 constraints, PredecessorRefiner: 196/196 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 16682ms problems are : Problem set: 0 solved, 196 unsolved
Search for dead transitions found 0 dead transitions in 16682ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16954 ms. Remains : 76/76 places, 198/198 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 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 0 with 84 rules applied. Total rules applied 84 place count 76 transition count 114
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 88 place count 72 transition count 114
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 13 Pre rules applied. Total rules applied 88 place count 72 transition count 101
Deduced a syphon composed of 13 places in 0 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 2 with 26 rules applied. Total rules applied 114 place count 59 transition count 101
Performed 17 Post agglomeration using F-continuation condition.Transition count delta: 17
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 148 place count 42 transition count 84
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 155 place count 35 transition count 70
Iterating global reduction 2 with 7 rules applied. Total rules applied 162 place count 35 transition count 70
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 169 place count 28 transition count 56
Iterating global reduction 2 with 7 rules applied. Total rules applied 176 place count 28 transition count 56
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 183 place count 21 transition count 42
Iterating global reduction 2 with 7 rules applied. Total rules applied 190 place count 21 transition count 42
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 197 place count 21 transition count 35
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 197 place count 21 transition count 34
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 199 place count 20 transition count 34
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -2
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 201 place count 19 transition count 36
Drop transitions (Redundant composition of simpler transitions.) removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 3 with 3 rules applied. Total rules applied 204 place count 19 transition count 33
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 205 place count 18 transition count 32
Iterating global reduction 3 with 1 rules applied. Total rules applied 206 place count 18 transition count 32
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 208 place count 18 transition count 30
Applied a total of 208 rules in 16 ms. Remains 18 /76 variables (removed 58) and now considering 30/198 (removed 168) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 30 rows 18 cols
[2026-05-25 10:20:43] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:20:43] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:20:43] [INFO ] After 22ms 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 10:20:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:20:43] [INFO ] After 7ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:20:43] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:20:43] [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 10:20:43] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:20:43] [INFO ] After 42ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:20:43] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:20:43] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:20:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10175178696239525109.gal : 1 ms
[2026-05-25 10:20:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3705209256418288876.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/ReachabilityCardinality10175178696239525109.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3705209256418288876.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/ReachabilityCardinality3705209256418288876.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 188231
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :188231 after 9.48316e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :9.48316e+07 after 2.78362e+08
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.78362e+08 after 6.45066e+08
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :6.45066e+08 after 1.37812e+09
Detected timeout of ITS tools.
[2026-05-25 10:20:58] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:20:58] [INFO ] Applying decomposition
[2026-05-25 10:20:58] [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/graph2212395602661282645.txt' '-o' '/tmp/graph2212395602661282645.bin' '-w' '/tmp/graph2212395602661282645.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2212395602661282645.bin' '-l' '-1' '-v' '-w' '/tmp/graph2212395602661282645.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:20:58] [INFO ] Decomposing Gal with order
[2026-05-25 10:20:58] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:20:58] [INFO ] Removed a total of 24 redundant transitions.
[2026-05-25 10:20:58] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:20:58] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 1 ms.
[2026-05-25 10:20:58] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15166879141569691392.gal : 0 ms
[2026-05-25 10:20:58] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14821936993192738627.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/ReachabilityCardinality15166879141569691392.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14821936993192738627.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/ReachabilityCardinality14821936993192738627.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 9
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :9 after 24
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :24 after 51
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :51 after 102
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :102 after 201
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :201 after 1530
Detected timeout of ITS tools.
[2026-05-25 10:21:07] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:21:07] [INFO ] Applying decomposition
[2026-05-25 10:21:07] [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/graph15206165089362021608.txt' '-o' '/tmp/graph15206165089362021608.bin' '-w' '/tmp/graph15206165089362021608.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph15206165089362021608.bin' '-l' '-1' '-v' '-w' '/tmp/graph15206165089362021608.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:21:07] [INFO ] Decomposing Gal with order
[2026-05-25 10:21:07] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:21:07] [INFO ] Removed a total of 340 redundant transitions.
[2026-05-25 10:21:07] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:21:07] [INFO ] Fuse similar labels procedure discarded/fused a total of 94 labels/synchronizations in 4 ms.
[2026-05-25 10:21:07] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1917411188613721760.gal : 1 ms
[2026-05-25 10:21:07] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13012966736129154337.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/ReachabilityCardinality1917411188613721760.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13012966736129154337.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/ReachabilityCardinality13012966736129154337.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30166 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:[593] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-06 in 118560 ms.
Starting property specific reduction for FunctionPointer-PT-b128-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 10:21:13] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:21:13] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 23 ms. (416 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:[12] Max Struct:[+inf]
[2026-05-25 10:21:13] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:21:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:21:13] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:21:13] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 10:21:13] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:21:14] [INFO ] [Real]Added 33 Read/Feed constraints in 16 ms returned sat
[2026-05-25 10:21:14] [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 10:21:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:21:14] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 10:21:14] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:14] [INFO ] Deduced a trap composed of 18 places in 60 ms of which 4 ms to minimize.
[2026-05-25 10:21:14] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 10:21:14] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 10 ms.
[2026-05-25 10:21:14] [INFO ] Added : 16 causal constraints over 4 iterations in 74 ms. Result :sat
Minimization took 41 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12] Max Struct:[+inf]
Support contains 1 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 276
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 276
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 26 place count 110 transition count 270
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 32 place count 104 transition count 258
Iterating global reduction 2 with 6 rules applied. Total rules applied 38 place count 104 transition count 258
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 42 place count 104 transition count 254
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 46 place count 100 transition count 244
Iterating global reduction 3 with 4 rules applied. Total rules applied 50 place count 100 transition count 244
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 54 place count 96 transition count 236
Iterating global reduction 3 with 4 rules applied. Total rules applied 58 place count 96 transition count 236
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 62 place count 92 transition count 228
Iterating global reduction 3 with 4 rules applied. Total rules applied 66 place count 92 transition count 228
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 70 place count 88 transition count 220
Iterating global reduction 3 with 4 rules applied. Total rules applied 74 place count 88 transition count 220
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 77 place count 85 transition count 214
Iterating global reduction 3 with 3 rules applied. Total rules applied 80 place count 85 transition count 214
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 81 place count 84 transition count 212
Iterating global reduction 3 with 1 rules applied. Total rules applied 82 place count 84 transition count 212
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 83 place count 83 transition count 210
Iterating global reduction 3 with 1 rules applied. Total rules applied 84 place count 83 transition count 210
Applied a total of 84 rules in 16 ms. Remains 83 /120 variables (removed 37) and now considering 210/303 (removed 93) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17 ms. Remains : 83/120 places, 210/303 transitions.
[2026-05-25 10:21:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 61=1, 93=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 63=1, 95=1, 125=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 :[17]
Current structural bounds on expressions (after cover walk) : Max Seen:[17] Max Struct:[+inf]
[2026-05-25 10:21:14] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
// Phase 1: matrix 130 rows 83 cols
[2026-05-25 10:21:14] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[17] Max Struct:[+inf]
RANDOM walk for 1000003 steps (2 resets) in 1123 ms. (889 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 687 ms. (1453 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[653] Max Struct:[+inf]
[2026-05-25 10:21:16] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:21:16] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:21:16] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:21:16] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:21:16] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:21:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:21:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:21:16] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:21:16] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:21:16] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 6 ms.
[2026-05-25 10:21:16] [INFO ] Added : 21 causal constraints over 5 iterations in 47 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[653] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[653] 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 6 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 6 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 10:21:16] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:16] [INFO ] Implicit Places using invariants in 64 ms returned []
[2026-05-25 10:21:16] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:16] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:21:16] [INFO ] Implicit Places using invariants and state equation in 178 ms returned []
Implicit Place search using SMT with State Equation took 243 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:21:16] [INFO ] Redundant transitions in 2 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:21:16] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:16] [INFO ] Invariant cache hit.
[2026-05-25 10:21:16] [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) 0/83 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 3081 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 10:21:23] [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 10:21:23] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:23] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:23] [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) 0/213 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 15523 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 18651ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 18652ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18904 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:21:35] [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 {26=1, 61=1, 93=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 63=1, 95=1, 125=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 41 ms. (steps per millisecond=243 ) properties (out of 1) seen :[16]
Current structural bounds on expressions (after cover walk) : Max Seen:[653] Max Struct:[+inf]
[2026-05-25 10:21:35] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:35] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[653] Max Struct:[+inf]
RANDOM walk for 1000008 steps (2 resets) in 1085 ms. (920 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 697 ms. (1432 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[653] Max Struct:[+inf]
[2026-05-25 10:21:37] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:21:37] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:21:37] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:21:37] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:21:37] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:21:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:21:37] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:21:37] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:21:37] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:21:37] [INFO ] Computed and/alt/rep : 61/202/55 causal constraints (skipped 73 transitions) in 9 ms.
[2026-05-25 10:21:37] [INFO ] Added : 21 causal constraints over 5 iterations in 64 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[653] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[653] 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 5 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 5 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 10:21:37] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:37] [INFO ] Implicit Places using invariants in 60 ms returned []
[2026-05-25 10:21:37] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:37] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:21:37] [INFO ] Implicit Places using invariants and state equation in 179 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 10:21:37] [INFO ] Redundant transitions in 1 ms returned []
Running 208 sub problems to find dead transitions.
[2026-05-25 10:21:37] [INFO ] Flow matrix only has 130 transitions (discarded 80 similar events)
[2026-05-25 10:21:37] [INFO ] Invariant cache hit.
[2026-05-25 10:21:37] [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 3093 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 10:21:44] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:44] [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 10:21:44] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:45] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/213 variables, 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 15281 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 18419ms problems are : Problem set: 0 solved, 208 unsolved
Search for dead transitions found 0 dead transitions in 18419ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18668 ms. Remains : 83/83 places, 210/210 transitions.
[2026-05-25 10:21:56] [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 {26=1, 61=1, 93=1, 126=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {28=1, 63=1, 95=1, 125=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 41 ms. (steps per millisecond=243 ) properties (out of 1) seen :[10]
Current structural bounds on expressions (after cover walk) : Max Seen:[653] Max Struct:[+inf]
[2026-05-25 10:21:56] [INFO ] Flatten gal took : 14 ms
RANDOM walk for 40001 steps (8 resets) in 84 ms. (470 steps per ms) remains 1/1 properties
[2026-05-25 10:21:56] [INFO ] Flatten gal took : 13 ms
[2026-05-25 10:21:56] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5050242748903712336.gal : 1 ms
[2026-05-25 10:21:56] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10780845361619411609.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/ReachabilityCardinality5050242748903712336.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10780845361619411609.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
BEST_FIRST walk for 40004 steps (8 resets) in 38 ms. (1025 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality10780845361619411609.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1051
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1051 after 168181
Finished probabilistic random walk after 164067 steps, run visited all 1 properties in 243 ms. (steps per millisecond=675 )
Probabilistic random walk after 164067 steps, saw 102143 distinct states, run finished after 246 ms. (steps per millisecond=666 ) properties seen :1
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[653] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-07 in 42670 ms.
Starting property specific reduction for FunctionPointer-PT-b128-UpperBounds-10
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:21:56] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:21:56] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10001 steps (2 resets) in 16 ms. (588 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 10:21:56] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:21:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:21:56] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:21:56] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:21:56] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:21:56] [INFO ] [Real]Added 33 Read/Feed constraints in 9 ms returned sat
[2026-05-25 10:21:56] [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 10:21:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:21:56] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:21:56] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:21:56] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:21:56] [INFO ] Added : 16 causal constraints over 4 iterations in 85 ms. Result :sat
Minimization took 38 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 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 278
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 278
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 26 place count 110 transition count 272
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 32 place count 104 transition count 258
Iterating global reduction 2 with 6 rules applied. Total rules applied 38 place count 104 transition count 258
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 42 place count 104 transition count 254
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 46 place count 100 transition count 244
Iterating global reduction 3 with 4 rules applied. Total rules applied 50 place count 100 transition count 244
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 54 place count 96 transition count 234
Iterating global reduction 3 with 4 rules applied. Total rules applied 58 place count 96 transition count 234
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 62 place count 92 transition count 226
Iterating global reduction 3 with 4 rules applied. Total rules applied 66 place count 92 transition count 226
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 70 place count 88 transition count 218
Iterating global reduction 3 with 4 rules applied. Total rules applied 74 place count 88 transition count 218
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 77 place count 85 transition count 212
Iterating global reduction 3 with 3 rules applied. Total rules applied 80 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 82 place count 83 transition count 208
Iterating global reduction 3 with 2 rules applied. Total rules applied 84 place count 83 transition count 208
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 86 place count 81 transition count 204
Iterating global reduction 3 with 2 rules applied. Total rules applied 88 place count 81 transition count 204
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 89 place count 80 transition count 202
Iterating global reduction 3 with 1 rules applied. Total rules applied 90 place count 80 transition count 202
Applied a total of 90 rules in 18 ms. Remains 80 /120 variables (removed 40) and now considering 202/303 (removed 101) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18 ms. Remains : 80/120 places, 202/303 transitions.
[2026-05-25 10:21:56] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[5] Max Struct:[+inf]
[2026-05-25 10:21:56] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
// Phase 1: matrix 124 rows 80 cols
[2026-05-25 10:21:56] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[5] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1121 ms. (891 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 642 ms. (1555 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[666] Max Struct:[+inf]
[2026-05-25 10:21:58] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:21:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:21:58] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:21:58] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 10:21:58] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:21:58] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:21:58] [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 10:21:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:21:58] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:21:58] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:21:58] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 5 ms.
[2026-05-25 10:21:58] [INFO ] Added : 9 causal constraints over 3 iterations in 52 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[666] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[666] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 10:22:00] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:00] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 10:22:00] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:00] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:00] [INFO ] Implicit Places using invariants and state equation in 169 ms returned []
Implicit Place search using SMT with State Equation took 250 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:22:00] [INFO ] Redundant transitions in 2 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 10:22:00] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:00] [INFO ] Invariant cache hit.
[2026-05-25 10:22:00] [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) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3101 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:07] [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 10:22:07] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:07] [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 10:22:07] [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) 0/204 variables, 4/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 7 (OVERLAPS) 0/204 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 305 constraints, problems are : Problem set: 0 solved, 200 unsolved in 14324 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 17467ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 17468ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17727 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 10:22:18] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[666] Max Struct:[+inf]
[2026-05-25 10:22:18] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:18] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[666] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1153 ms. (866 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 644 ms. (1550 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[666] Max Struct:[+inf]
[2026-05-25 10:22:20] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:20] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:22:20] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:22:20] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:20] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:22:20] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:20] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:22:20] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:22:20] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:22:20] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 5 ms.
[2026-05-25 10:22:20] [INFO ] Added : 9 causal constraints over 3 iterations in 33 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[666] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[666] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 10:22:21] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:21] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 10:22:21] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:22] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:22] [INFO ] Implicit Places using invariants and state equation in 180 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 10:22:22] [INFO ] Redundant transitions in 0 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 10:22:22] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:22] [INFO ] Invariant cache hit.
[2026-05-25 10:22:22] [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) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3177 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:28] [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 10:22:28] [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 10:22:28] [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 10:22:28] [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) 0/204 variables, 4/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 7 (OVERLAPS) 0/204 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 305 constraints, problems are : Problem set: 0 solved, 200 unsolved in 14301 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 17527ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 17527ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17787 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 10:22:39] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[666] Max Struct:[+inf]
[2026-05-25 10:22:39] [INFO ] Flatten gal took : 23 ms
RANDOM walk for 40004 steps (8 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
[2026-05-25 10:22:39] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:22:39] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13682530370663641044.gal : 1 ms
[2026-05-25 10:22:39] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality17560078498083497664.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/ReachabilityCardinality13682530370663641044.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality17560078498083497664.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 40004 steps (8 resets) in 31 ms. (1250 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/ReachabilityCardinality17560078498083497664.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 1045
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1045 after 158850
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :158850 after 1.90899e+08
Interrupted probabilistic random walk after 2027727 steps, run timeout after 3001 ms. (steps per millisecond=675 ) properties seen :0 out of 1
Probabilistic random walk after 2027727 steps, saw 1262044 distinct states, run finished after 3001 ms. (steps per millisecond=675 ) properties seen :0
[2026-05-25 10:22:42] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:42] [INFO ] Invariant cache hit.
[2026-05-25 10:22:42] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 7/93 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/93 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 96/189 variables, 55/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 17/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 9/204 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 18 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 1 unsolved in 97 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/86 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 7/93 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 3/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/93 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 96/189 variables, 55/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 17/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 9/204 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 91 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 191ms problems are : Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.90899e+08 after 3.33897e+12
Parikh walk visited 0 properties in 985 ms.
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 80/80 places, 202/202 transitions.
RANDOM walk for 40002 steps (8 resets) in 108 ms. (366 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
Interrupted probabilistic random walk after 2012868 steps, run timeout after 3001 ms. (steps per millisecond=670 ) properties seen :0 out of 1
Probabilistic random walk after 2012868 steps, saw 1252795 distinct states, run finished after 3001 ms. (steps per millisecond=670 ) properties seen :0
[2026-05-25 10:22:47] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:47] [INFO ] Invariant cache hit.
[2026-05-25 10:22:47] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 7/93 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/93 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 96/189 variables, 55/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 17/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 9/204 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 18 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 1 unsolved in 106 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/86 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 7/93 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 3/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/93 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 96/189 variables, 55/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 17/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 9/204 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 96 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 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
Parikh walk visited 0 properties in 961 ms.
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 10:22:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:48] [INFO ] Implicit Places using invariants in 78 ms returned []
[2026-05-25 10:22:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:48] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:22:48] [INFO ] Implicit Places using invariants and state equation in 187 ms returned []
Implicit Place search using SMT with State Equation took 266 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:22:48] [INFO ] Redundant transitions in 0 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 10:22:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:22:48] [INFO ] Invariant cache hit.
[2026-05-25 10:22:48] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3195 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:54] [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 10:22:55] [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 10:22:55] [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 10:22:55] [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) 0/204 variables, 4/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3.33897e+12 after 1.28264e+18
At refinement iteration 7 (OVERLAPS) 0/204 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 305 constraints, problems are : Problem set: 0 solved, 200 unsolved in 13999 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 17242ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 17243ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17522 ms. Remains : 80/80 places, 202/202 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 78 transitions
Reduce isomorphic transitions removed 78 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 84 rules applied. Total rules applied 84 place count 80 transition count 118
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 90 place count 74 transition count 118
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 90 place count 74 transition count 102
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 122 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 1 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 152 place count 43 transition count 87
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 159 place count 36 transition count 73
Iterating global reduction 2 with 7 rules applied. Total rules applied 166 place count 36 transition count 73
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 173 place count 29 transition count 59
Iterating global reduction 2 with 7 rules applied. Total rules applied 180 place count 29 transition count 59
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 187 place count 22 transition count 45
Iterating global reduction 2 with 7 rules applied. Total rules applied 194 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 201 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 201 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 203 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 205 place count 20 transition count 37
Applied a total of 205 rules in 15 ms. Remains 20 /80 variables (removed 60) and now considering 37/202 (removed 165) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 37 rows 20 cols
[2026-05-25 10:23:05] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:23:05] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:05] [INFO ] After 7ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:23:05] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:23:05] [INFO ] After 1ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:23:05] [INFO ] After 26ms 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 10:23:05] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:23:05] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:23:05] [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 10:23:05] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:23:05] [INFO ] After 30ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:23:05] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:23:05] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:23:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4064625233961872034.gal : 0 ms
[2026-05-25 10:23:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9734755946117398177.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/ReachabilityCardinality4064625233961872034.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9734755946117398177.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/ReachabilityCardinality9734755946117398177.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 441230
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :441230 after 6.32845e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :6.32845e+09 after 5.42758e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.42758e+10 after 2.91075e+11
Detected timeout of ITS tools.
[2026-05-25 10:23:20] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:23:20] [INFO ] Applying decomposition
[2026-05-25 10:23:20] [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/graph9301306119187639808.txt' '-o' '/tmp/graph9301306119187639808.bin' '-w' '/tmp/graph9301306119187639808.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph9301306119187639808.bin' '-l' '-1' '-v' '-w' '/tmp/graph9301306119187639808.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:23:20] [INFO ] Decomposing Gal with order
[2026-05-25 10:23:20] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:23:20] [INFO ] Removed a total of 29 redundant transitions.
[2026-05-25 10:23:20] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:23:20] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 10:23:20] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2137854650168019722.gal : 0 ms
[2026-05-25 10:23:20] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4203731175743896914.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/ReachabilityCardinality2137854650168019722.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4203731175743896914.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/ReachabilityCardinality4203731175743896914.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 149376
Detected timeout of ITS tools.
[2026-05-25 10:23:29] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:23:29] [INFO ] Applying decomposition
[2026-05-25 10:23:29] [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/graph18161230986710114979.txt' '-o' '/tmp/graph18161230986710114979.bin' '-w' '/tmp/graph18161230986710114979.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph18161230986710114979.bin' '-l' '-1' '-v' '-w' '/tmp/graph18161230986710114979.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:23:29] [INFO ] Decomposing Gal with order
[2026-05-25 10:23:29] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:23:29] [INFO ] Removed a total of 341 redundant transitions.
[2026-05-25 10:23:29] [INFO ] Flatten gal took : 10 ms
[2026-05-25 10:23:29] [INFO ] Fuse similar labels procedure discarded/fused a total of 105 labels/synchronizations in 4 ms.
[2026-05-25 10:23:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4507706094368115824.gal : 2 ms
[2026-05-25 10:23:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality767224407413731179.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/ReachabilityCardinality4507706094368115824.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality767224407413731179.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/ReachabilityCardinality767224407413731179.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30145 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:[666] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-10 in 99394 ms.
Starting property specific reduction for FunctionPointer-PT-b128-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 10:23:35] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:23:35] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 22 ms. (434 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:[5] Max Struct:[+inf]
[2026-05-25 10:23:35] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:23:35] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:23:36] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:23:36] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:23:36] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:23:36] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:23:36] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:23:36] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:36] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 10:23:36] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:36] [INFO ] Deduced a trap composed of 18 places in 66 ms of which 4 ms to minimize.
[2026-05-25 10:23:36] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 83 ms
[2026-05-25 10:23:36] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 11 ms.
[2026-05-25 10:23:36] [INFO ] Added : 9 causal constraints over 4 iterations in 59 ms. Result :sat
Minimization took 40 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 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 276
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 276
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 24 place count 110 transition count 272
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 31 place count 103 transition count 256
Iterating global reduction 2 with 7 rules applied. Total rules applied 38 place count 103 transition count 256
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 42 place count 103 transition count 252
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 47 place count 98 transition count 240
Iterating global reduction 3 with 5 rules applied. Total rules applied 52 place count 98 transition count 240
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 57 place count 93 transition count 228
Iterating global reduction 3 with 5 rules applied. Total rules applied 62 place count 93 transition count 228
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 67 place count 88 transition count 218
Iterating global reduction 3 with 5 rules applied. Total rules applied 72 place count 88 transition count 218
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 77 place count 83 transition count 208
Iterating global reduction 3 with 5 rules applied. Total rules applied 82 place count 83 transition count 208
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 86 place count 79 transition count 200
Iterating global reduction 3 with 4 rules applied. Total rules applied 90 place count 79 transition count 200
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 92 place count 77 transition count 196
Iterating global reduction 3 with 2 rules applied. Total rules applied 94 place count 77 transition count 196
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 95 place count 76 transition count 194
Iterating global reduction 3 with 1 rules applied. Total rules applied 96 place count 76 transition count 194
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 97 place count 75 transition count 192
Iterating global reduction 3 with 1 rules applied. Total rules applied 98 place count 75 transition count 192
Applied a total of 98 rules in 15 ms. Remains 75 /120 variables (removed 45) and now considering 192/303 (removed 111) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 75/120 places, 192/303 transitions.
[2026-05-25 10:23:36] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 38 ms. (steps per millisecond=263 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[5] Max Struct:[+inf]
[2026-05-25 10:23:36] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
// Phase 1: matrix 117 rows 75 cols
[2026-05-25 10:23:36] [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 1083 ms. (922 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 609 ms. (1639 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[959] Max Struct:[+inf]
[2026-05-25 10:23:38] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:38] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:38] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 10:23:38] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:23:38] [INFO ] [Real]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:23:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:38] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:23:38] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:23:38] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:23:38] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 5 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:38] [INFO ] Deduced a trap composed of 14 places in 52 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:38] [INFO ] Deduced a trap composed of 20 places in 52 ms of which 6 ms to minimize.
[2026-05-25 10:23:38] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 133 ms
[2026-05-25 10:23:38] [INFO ] Added : 8 causal constraints over 4 iterations in 173 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[959] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[959] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:23:39] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:39] [INFO ] Implicit Places using invariants in 64 ms returned []
[2026-05-25 10:23:39] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:39] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:23:39] [INFO ] Implicit Places using invariants and state equation in 158 ms returned []
Implicit Place search using SMT with State Equation took 223 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:23:39] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:23:39] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:39] [INFO ] Invariant cache hit.
[2026-05-25 10:23:39] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3449 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/192 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 285 constraints, problems are : Problem set: 0 solved, 190 unsolved in 7516 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 11013ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 11013ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11248 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:23:50] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 37 ms. (steps per millisecond=270 ) properties (out of 1) seen :[7]
Current structural bounds on expressions (after cover walk) : Max Seen:[959] Max Struct:[+inf]
[2026-05-25 10:23:50] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[959] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1019 ms. (980 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 595 ms. (1677 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[959] Max Struct:[+inf]
[2026-05-25 10:23:52] [INFO ] Flow matrix only has 117 transitions (discarded 75 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 21 ms returned sat
[2026-05-25 10:23:52] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:23:52] [INFO ] [Real]Added 17 Read/Feed constraints in 2 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 22 ms returned sat
[2026-05-25 10:23:52] [INFO ] [Nat]Added 17 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:23:52] [INFO ] Computed and/alt/rep : 60/196/52 causal constraints (skipped 63 transitions) in 6 ms.
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.
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 20 places in 56 ms of which 6 ms to minimize.
[2026-05-25 10:23:52] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 139 ms
[2026-05-25 10:23:52] [INFO ] Added : 8 causal constraints over 4 iterations in 177 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[959] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[959] Max Struct:[+inf]
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:23:54] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:54] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 10:23:54] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:54] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:23:54] [INFO ] Implicit Places using invariants and state equation in 157 ms returned []
Implicit Place search using SMT with State Equation took 225 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:23:54] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:23:54] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:23:54] [INFO ] Invariant cache hit.
[2026-05-25 10:23:54] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3427 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/192 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 285 constraints, problems are : Problem set: 0 solved, 190 unsolved in 7532 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10999ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 11000ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11236 ms. Remains : 75/75 places, 192/192 transitions.
[2026-05-25 10:24:05] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 55=1, 100=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {25=1, 53=1, 98=1, 115=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 38 ms. (steps per millisecond=263 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[959] Max Struct:[+inf]
[2026-05-25 10:24:05] [INFO ] Flatten gal took : 13 ms
[2026-05-25 10:24:05] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:24:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9594218421789736054.gal : 1 ms
[2026-05-25 10:24:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9989570189555479779.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/ReachabilityCardinality9594218421789736054.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9989570189555479779.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 40006 steps (8 resets) in 92 ms. (430 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality9989570189555479779.prop.
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 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1038
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1038 after 153135
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :153135 after 1.6579e+08
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.6579e+08 after 2.22957e+12
Interrupted probabilistic random walk after 2059991 steps, run timeout after 3001 ms. (steps per millisecond=686 ) properties seen :0 out of 1
Probabilistic random walk after 2059991 steps, saw 1282252 distinct states, run finished after 3001 ms. (steps per millisecond=686 ) properties seen :0
[2026-05-25 10:24:08] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:24:08] [INFO ] Invariant cache hit.
[2026-05-25 10:24:08] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 3/79 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 90/169 variables, 50/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 10/185 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/189 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/189 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/192 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 89 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 3/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/79 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 90/169 variables, 50/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 10/185 variables, 9/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 4/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 3/192 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 103 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 195ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 687 ms.
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 75/75 places, 192/192 transitions.
RANDOM walk for 40002 steps (8 resets) in 100 ms. (396 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 32 ms. (1212 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2076236 steps, run timeout after 3001 ms. (steps per millisecond=691 ) properties seen :0 out of 1
Probabilistic random walk after 2076236 steps, saw 1292362 distinct states, run finished after 3001 ms. (steps per millisecond=691 ) properties seen :0
[2026-05-25 10:24:12] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:24:12] [INFO ] Invariant cache hit.
[2026-05-25 10:24:12] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 3/79 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 90/169 variables, 50/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 10/185 variables, 9/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/185 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/189 variables, 2/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/189 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/192 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 1 unsolved in 127 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 8/11 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 65/76 variables, 8/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/76 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 3/79 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/79 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/79 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 90/169 variables, 50/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 10/185 variables, 9/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/185 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 4/189 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/189 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 3/192 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/192 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 94 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 238ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 714 ms.
Support contains 1 out of 75 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 75/75 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 75/75 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 10:24:13] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:24:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:13] [INFO ] Implicit Places using invariants in 65 ms returned []
[2026-05-25 10:24:13] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:24:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:13] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 10:24:13] [INFO ] Implicit Places using invariants and state equation in 153 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 10:24:13] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 10:24:13] [INFO ] Flow matrix only has 117 transitions (discarded 75 similar events)
[2026-05-25 10:24:13] [INFO ] Invariant cache hit.
[2026-05-25 10:24:13] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/192 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 192/192 variables, and 95 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3401 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 117/192 variables, 75/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/192 variables, 17/95 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/192 variables, 190/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/192 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/192 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 192/192 variables, and 285 constraints, problems are : Problem set: 0 solved, 190 unsolved in 7404 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 75/75 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10846ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 10846ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11090 ms. Remains : 75/75 places, 192/192 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 75 transitions
Reduce isomorphic transitions removed 75 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 75 transition count 111
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 87 place count 69 transition count 111
Performed 11 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 11 Pre rules applied. Total rules applied 87 place count 69 transition count 100
Deduced a syphon composed of 11 places in 0 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 2 with 22 rules applied. Total rules applied 109 place count 58 transition count 100
Performed 17 Post agglomeration using F-continuation condition.Transition count delta: 17
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 143 place count 41 transition count 83
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 150 place count 34 transition count 69
Iterating global reduction 2 with 7 rules applied. Total rules applied 157 place count 34 transition count 69
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 164 place count 27 transition count 55
Iterating global reduction 2 with 7 rules applied. Total rules applied 171 place count 27 transition count 55
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 178 place count 20 transition count 41
Iterating global reduction 2 with 7 rules applied. Total rules applied 185 place count 20 transition count 41
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 192 place count 20 transition count 34
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 192 place count 20 transition count 33
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 194 place count 19 transition count 33
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 196 place count 18 transition count 33
Drop transitions (Redundant composition of simpler transitions.) removed 3 transitions
Redundant transition composition rules discarded 3 transitions
Iterating global reduction 3 with 3 rules applied. Total rules applied 199 place count 18 transition count 30
Applied a total of 199 rules in 3 ms. Remains 18 /75 variables (removed 57) and now considering 30/192 (removed 162) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 30 rows 18 cols
[2026-05-25 10:24:24] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:24:24] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:24:24] [INFO ] After 7ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:24:24] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:24:24] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:24:24] [INFO ] After 25ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:24:24] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:24:24] [INFO ] After 6ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:24:24] [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 10:24:24] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:24:24] [INFO ] After 46ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:24:24] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:24:24] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:24:24] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14209579587239770751.gal : 1 ms
[2026-05-25 10:24:24] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11712381809304196405.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/ReachabilityCardinality14209579587239770751.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11712381809304196405.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/ReachabilityCardinality11712381809304196405.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 57539
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :57539 after 3.245e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :3.245e+06 after 3.70307e+08
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :2.22957e+12 after 5.06993e+17
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :3.70307e+08 after 1.10371e+09
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.10371e+09 after 2.56982e+09
Detected timeout of ITS tools.
[2026-05-25 10:24:39] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:24:39] [INFO ] Applying decomposition
[2026-05-25 10:24:39] [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/graph8383775586048651118.txt' '-o' '/tmp/graph8383775586048651118.bin' '-w' '/tmp/graph8383775586048651118.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph8383775586048651118.bin' '-l' '-1' '-v' '-w' '/tmp/graph8383775586048651118.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:24:39] [INFO ] Decomposing Gal with order
[2026-05-25 10:24:39] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:24:39] [INFO ] Removed a total of 22 redundant transitions.
[2026-05-25 10:24:39] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:24:39] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 1 ms.
[2026-05-25 10:24:39] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16834466181342059771.gal : 0 ms
[2026-05-25 10:24:39] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4630054088694021520.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/ReachabilityCardinality16834466181342059771.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4630054088694021520.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/ReachabilityCardinality4630054088694021520.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 90946
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :90946 after 1.46458e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.46458e+06 after 2.27928e+11
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.27928e+11 after 1.07156e+13
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30163 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-25 10:24:54] [INFO ] Flatten gal took : 6 ms
[2026-05-25 10:24:54] [INFO ] Applying decomposition
[2026-05-25 10:24:54] [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/graph4459687339219457994.txt' '-o' '/tmp/graph4459687339219457994.bin' '-w' '/tmp/graph4459687339219457994.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph4459687339219457994.bin' '-l' '-1' '-v' '-w' '/tmp/graph4459687339219457994.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:24:54] [INFO ] Decomposing Gal with order
[2026-05-25 10:24:54] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:24:54] [INFO ] Removed a total of 323 redundant transitions.
[2026-05-25 10:24:54] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:24:54] [INFO ] Fuse similar labels procedure discarded/fused a total of 94 labels/synchronizations in 2 ms.
[2026-05-25 10:24:54] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3925314353979802324.gal : 1 ms
[2026-05-25 10:24:54] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality930679743503377824.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/ReachabilityCardinality3925314353979802324.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality930679743503377824.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/ReachabilityCardinality930679743503377824.prop.
Detected timeout of ITS tools.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[959] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-11 in 128855 ms.
Starting property specific reduction for FunctionPointer-PT-b128-UpperBounds-14
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:25:44] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:25:44] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 13 ms. (714 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 10:25:44] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:25:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:25:44] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:25:44] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:25:44] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:25:44] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:25:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:25:44] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:25:44] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:45] [INFO ] Deduced a trap composed of 18 places in 63 ms of which 4 ms to minimize.
[2026-05-25 10:25:45] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
[2026-05-25 10:25:45] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 8 ms.
[2026-05-25 10:25:45] [INFO ] Added : 32 causal constraints over 8 iterations in 106 ms. Result :sat
Minimization took 42 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[7] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[7] Max Struct:[+inf]
Support contains 1 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 280
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 280
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 26 place count 110 transition count 274
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 32 place count 104 transition count 260
Iterating global reduction 2 with 6 rules applied. Total rules applied 38 place count 104 transition count 260
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 2 with 8 rules applied. Total rules applied 46 place count 104 transition count 252
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 50 place count 100 transition count 244
Iterating global reduction 3 with 4 rules applied. Total rules applied 54 place count 100 transition count 244
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 58 place count 96 transition count 234
Iterating global reduction 3 with 4 rules applied. Total rules applied 62 place count 96 transition count 234
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 66 place count 92 transition count 226
Iterating global reduction 3 with 4 rules applied. Total rules applied 70 place count 92 transition count 226
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 74 place count 88 transition count 218
Iterating global reduction 3 with 4 rules applied. Total rules applied 78 place count 88 transition count 218
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 81 place count 85 transition count 212
Iterating global reduction 3 with 3 rules applied. Total rules applied 84 place count 85 transition count 212
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 85 place count 84 transition count 210
Iterating global reduction 3 with 1 rules applied. Total rules applied 86 place count 84 transition count 210
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 87 place count 83 transition count 208
Iterating global reduction 3 with 1 rules applied. Total rules applied 88 place count 83 transition count 208
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 89 place count 82 transition count 206
Iterating global reduction 3 with 1 rules applied. Total rules applied 90 place count 82 transition count 206
Applied a total of 90 rules in 12 ms. Remains 82 /120 variables (removed 38) and now considering 206/303 (removed 97) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12 ms. Remains : 82/120 places, 206/303 transitions.
[2026-05-25 10:25:45] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 45 ms. (steps per millisecond=222 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 10:25:45] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
// Phase 1: matrix 126 rows 82 cols
[2026-05-25 10:25:45] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[7] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1164 ms. (858 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 672 ms. (1485 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[256] Max Struct:[+inf]
[2026-05-25 10:25:47] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:25:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:25:47] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:25:47] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:25:47] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:25:47] [INFO ] [Real]Added 18 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:25:47] [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 10:25:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:25:47] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2026-05-25 10:25:47] [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 10:25:47] [INFO ] Deduced a trap composed of 14 places in 47 ms of which 5 ms to minimize.
[2026-05-25 10:25:47] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 57 ms
[2026-05-25 10:25:47] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 71 transitions) in 6 ms.
[2026-05-25 10:25:47] [INFO ] Added : 9 causal constraints over 3 iterations in 36 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[256] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[256] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:25:48] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:25:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:25:48] [INFO ] Implicit Places using invariants in 80 ms returned []
[2026-05-25 10:25:48] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:25:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:25:48] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:25:48] [INFO ] Implicit Places using invariants and state equation in 160 ms returned []
Implicit Place search using SMT with State Equation took 250 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:25:48] [INFO ] Redundant transitions in 1 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:25:48] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:25:48] [INFO ] Invariant cache hit.
[2026-05-25 10:25:48] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 4639 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:56] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:56] [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 10:25:56] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:56] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:56] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 5/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 312 constraints, problems are : Problem set: 0 solved, 204 unsolved in 14218 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 18904ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 18904ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19161 ms. Remains : 82/82 places, 206/206 transitions.
[2026-05-25 10:26:07] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[256] Max Struct:[+inf]
[2026-05-25 10:26:07] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:07] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[256] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1146 ms. (871 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 677 ms. (1474 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[279] Max Struct:[+inf]
[2026-05-25 10:26:09] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:09] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:09] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 10:26:09] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:09] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 10:26:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:09] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:09] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 10:26:09] [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 10:26:09] [INFO ] Deduced a trap composed of 14 places in 57 ms of which 5 ms to minimize.
[2026-05-25 10:26:09] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 66 ms
[2026-05-25 10:26:09] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 71 transitions) in 5 ms.
[2026-05-25 10:26:09] [INFO ] Added : 9 causal constraints over 3 iterations in 34 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[279] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[279] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:26:10] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:10] [INFO ] Implicit Places using invariants in 78 ms returned []
[2026-05-25 10:26:10] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:10] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:10] [INFO ] Implicit Places using invariants and state equation in 162 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 10:26:10] [INFO ] Redundant transitions in 0 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:26:10] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:10] [INFO ] Invariant cache hit.
[2026-05-25 10:26:10] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 4759 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:18] [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 10:26:18] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:18] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:19] [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 10:26:19] [INFO ] Deduced a trap along path composed of 3 places in 13 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 5/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 312 constraints, problems are : Problem set: 0 solved, 204 unsolved in 13803 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 18605ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 18606ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18856 ms. Remains : 82/82 places, 206/206 transitions.
[2026-05-25 10:26:29] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 37 ms. (steps per millisecond=270 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[279] Max Struct:[+inf]
[2026-05-25 10:26:29] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:29] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[279] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1104 ms. (904 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 672 ms. (1485 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[279] Max Struct:[+inf]
[2026-05-25 10:26:31] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:31] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:26:31] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:26:31] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:31] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:26:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:31] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:26:31] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:26:31] [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 10:26:31] [INFO ] Deduced a trap composed of 14 places in 52 ms of which 5 ms to minimize.
[2026-05-25 10:26:31] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 60 ms
[2026-05-25 10:26:31] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 71 transitions) in 6 ms.
[2026-05-25 10:26:31] [INFO ] Added : 9 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[279] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[279] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:26:32] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:32] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 10:26:32] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:32] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:32] [INFO ] Implicit Places using invariants and state equation in 162 ms returned []
Implicit Place search using SMT with State Equation took 232 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:26:32] [INFO ] Redundant transitions in 1 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:26:32] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:32] [INFO ] Invariant cache hit.
[2026-05-25 10:26:32] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 4612 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:40] [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 10:26:40] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:40] [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 10:26:40] [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 10:26:40] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 5/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 312 constraints, problems are : Problem set: 0 solved, 204 unsolved in 13950 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 18605ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 18605ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18846 ms. Remains : 82/82 places, 206/206 transitions.
[2026-05-25 10:26:51] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[279] Max Struct:[+inf]
[2026-05-25 10:26:51] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:26:51] [INFO ] Flatten gal took : 9 ms
RANDOM walk for 40006 steps (8 resets) in 80 ms. (493 steps per ms) remains 1/1 properties
[2026-05-25 10:26:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6493403751117006469.gal : 2 ms
[2026-05-25 10:26:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11877518841634306672.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/ReachabilityCardinality6493403751117006469.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11877518841634306672.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality11877518841634306672.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 1045
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1045 after 158850
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :158850 after 1.90899e+08
Interrupted probabilistic random walk after 1997650 steps, run timeout after 3001 ms. (steps per millisecond=665 ) properties seen :0 out of 1
Probabilistic random walk after 1997650 steps, saw 1243322 distinct states, run finished after 3001 ms. (steps per millisecond=665 ) properties seen :0
[2026-05-25 10:26:54] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:54] [INFO ] Invariant cache hit.
[2026-05-25 10:26:54] [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) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 7/105 variables, 2/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/105 variables, 3/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 91/196 variables, 53/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/196 variables, 16/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/202 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/202 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 6/208 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 91 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 1/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/98 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 7/105 variables, 2/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 3/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/105 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 91/196 variables, 53/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 16/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/196 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/202 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/202 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 6/208 variables, 8/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:54] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
At refinement iteration 22 (INCLUDED_ONLY) 0/208 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/208 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/208 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 135 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 229ms problems are : Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.90899e+08 after 3.33897e+12
Parikh walk visited 0 properties in 405 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 82/82 places, 206/206 transitions.
RANDOM walk for 40008 steps (8 resets) in 109 ms. (363 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 2012332 steps, run timeout after 3001 ms. (steps per millisecond=670 ) properties seen :0 out of 1
Probabilistic random walk after 2012332 steps, saw 1252462 distinct states, run finished after 3001 ms. (steps per millisecond=670 ) properties seen :0
[2026-05-25 10:26:58] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:58] [INFO ] Invariant cache hit.
[2026-05-25 10:26:58] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 7/105 variables, 2/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/105 variables, 3/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 91/196 variables, 53/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/196 variables, 16/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 6/202 variables, 1/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/202 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 6/208 variables, 8/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 105 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 7/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 10/25 variables, 4/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/25 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 73/98 variables, 8/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/98 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/98 variables, 1/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/98 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 7/105 variables, 2/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/105 variables, 3/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/105 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 91/196 variables, 53/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/196 variables, 16/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/196 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 6/202 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/202 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 6/208 variables, 8/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:58] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 1 ms to minimize.
At refinement iteration 22 (INCLUDED_ONLY) 0/208 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/208 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/208 variables, 0/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 105 constraints, problems are : Problem set: 0 solved, 1 unsolved in 148 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 269ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 412 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 206/206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 206/206 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 206/206 (removed 0) transitions.
[2026-05-25 10:26:58] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:58] [INFO ] Implicit Places using invariants in 77 ms returned []
[2026-05-25 10:26:58] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:58] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:26:59] [INFO ] Implicit Places using invariants and state equation in 157 ms returned []
Implicit Place search using SMT with State Equation took 234 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:26:59] [INFO ] Redundant transitions in 1 ms returned []
Running 204 sub problems to find dead transitions.
[2026-05-25 10:26:59] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
[2026-05-25 10:26:59] [INFO ] Invariant cache hit.
[2026-05-25 10:26:59] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 5 (OVERLAPS) 0/208 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Real declared 208/208 variables, and 103 constraints, problems are : Problem set: 0 solved, 204 unsolved in 4665 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 2 (OVERLAPS) 126/208 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/208 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 204/307 constraints. Problems are: Problem set: 0 solved, 204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:07] [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 10:27:07] [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 10:27:07] [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 10:27:07] [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 10:27:07] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/208 variables, 5/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3.33897e+12 after 1.28264e+18
At refinement iteration 7 (OVERLAPS) 0/208 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 204 unsolved
No progress, stopping.
After SMT solving in domain Int declared 208/208 variables, and 312 constraints, problems are : Problem set: 0 solved, 204 unsolved in 14186 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 204/204 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 18895ms problems are : Problem set: 0 solved, 204 unsolved
Search for dead transitions found 0 dead transitions in 18895ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19136 ms. Remains : 82/82 places, 206/206 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 80 transitions
Reduce isomorphic transitions removed 80 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 86 rules applied. Total rules applied 86 place count 82 transition count 120
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 92 place count 76 transition count 120
Performed 17 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 17 Pre rules applied. Total rules applied 92 place count 76 transition count 103
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 126 place count 59 transition count 103
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 156 place count 44 transition count 88
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 163 place count 37 transition count 74
Iterating global reduction 2 with 7 rules applied. Total rules applied 170 place count 37 transition count 74
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 177 place count 30 transition count 60
Iterating global reduction 2 with 7 rules applied. Total rules applied 184 place count 30 transition count 60
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 191 place count 23 transition count 46
Iterating global reduction 2 with 7 rules applied. Total rules applied 198 place count 23 transition count 46
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 205 place count 23 transition count 39
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 205 place count 23 transition count 38
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 207 place count 22 transition count 38
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 211 place count 20 transition count 38
Applied a total of 211 rules in 11 ms. Remains 20 /82 variables (removed 62) and now considering 38/206 (removed 168) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 38 rows 20 cols
[2026-05-25 10:27:17] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:27:18] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:18] [INFO ] After 8ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:27:18] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:27:18] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:27:18] [INFO ] After 32ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:27:18] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:27:18] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:27:18] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 10:27:18] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:27:18] [INFO ] After 30ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:27:18] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:27:18] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:27:18] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8440366960451651589.gal : 1 ms
[2026-05-25 10:27:18] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18194846422584430749.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/ReachabilityCardinality8440366960451651589.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18194846422584430749.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/ReachabilityCardinality18194846422584430749.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 441230
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :441230 after 6.32845e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :6.32845e+09 after 5.42758e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.42758e+10 after 2.91075e+11
Detected timeout of ITS tools.
[2026-05-25 10:27:33] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:27:33] [INFO ] Applying decomposition
[2026-05-25 10:27:33] [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/graph13396131185433921459.txt' '-o' '/tmp/graph13396131185433921459.bin' '-w' '/tmp/graph13396131185433921459.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph13396131185433921459.bin' '-l' '-1' '-v' '-w' '/tmp/graph13396131185433921459.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:27:33] [INFO ] Decomposing Gal with order
[2026-05-25 10:27:33] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:27:33] [INFO ] Removed a total of 35 redundant transitions.
[2026-05-25 10:27:33] [INFO ] Flatten gal took : 2 ms
[2026-05-25 10:27:33] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 10:27:33] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5527471333333275775.gal : 1 ms
[2026-05-25 10:27:33] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality99580811912993810.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/ReachabilityCardinality5527471333333275775.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality99580811912993810.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...305
Loading property file /tmp/ReachabilityCardinality99580811912993810.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 3.62791e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :3.62791e+06 after 7.62532e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :7.62532e+07 after 2.24008e+08
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.24008e+08 after 5.17371e+08
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :5.17371e+08 after 1.1041e+09
Detected timeout of ITS tools.
[2026-05-25 10:27:41] [INFO ] Flatten gal took : 4 ms
[2026-05-25 10:27:41] [INFO ] Applying decomposition
[2026-05-25 10:27:41] [INFO ] Flatten gal took : 4 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph18425844408745681354.txt' '-o' '/tmp/graph18425844408745681354.bin' '-w' '/tmp/graph18425844408745681354.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph18425844408745681354.bin' '-l' '-1' '-v' '-w' '/tmp/graph18425844408745681354.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:27:41] [INFO ] Decomposing Gal with order
[2026-05-25 10:27:41] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:27:41] [INFO ] Removed a total of 351 redundant transitions.
[2026-05-25 10:27:41] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:27:41] [INFO ] Fuse similar labels procedure discarded/fused a total of 106 labels/synchronizations in 3 ms.
[2026-05-25 10:27:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16469184178070088892.gal : 1 ms
[2026-05-25 10:27:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11727846131237444714.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/ReachabilityCardinality16469184178070088892.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11727846131237444714.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/ReachabilityCardinality11727846131237444714.prop.
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :1.1041e+09 after 2.27719e+09
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30156 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:[279] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-14 in 123350 ms.
Starting property specific reduction for FunctionPointer-PT-b128-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 10:27:48] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
// Phase 1: matrix 195 rows 120 cols
[2026-05-25 10:27:48] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 20 ms. (476 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:[2] Max Struct:[+inf]
[2026-05-25 10:27:48] [INFO ] Flow matrix only has 195 transitions (discarded 108 similar events)
[2026-05-25 10:27:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:27:48] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:48] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 10:27:48] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 10:27:48] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 10:27:48] [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 10:27:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:48] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 10:27:48] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 10:27:48] [INFO ] Computed and/alt/rep : 58/306/56 causal constraints (skipped 137 transitions) in 9 ms.
[2026-05-25 10:27:48] [INFO ] Added : 8 causal constraints over 3 iterations in 64 ms. Result :sat
Minimization took 35 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2] Max Struct:[+inf]
Support contains 1 out of 120 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 120/120 places, 303/303 transitions.
Graph (complete) has 501 edges and 120 vertex of which 117 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 117 transition count 298
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 13 place count 110 transition count 278
Iterating global reduction 1 with 7 rules applied. Total rules applied 20 place count 110 transition count 278
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 26 place count 110 transition count 272
Discarding 6 places :
Symmetric choice reduction at 2 with 6 rule applications. Total rules 32 place count 104 transition count 258
Iterating global reduction 2 with 6 rules applied. Total rules applied 38 place count 104 transition count 258
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 42 place count 104 transition count 254
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 46 place count 100 transition count 244
Iterating global reduction 3 with 4 rules applied. Total rules applied 50 place count 100 transition count 244
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 54 place count 96 transition count 234
Iterating global reduction 3 with 4 rules applied. Total rules applied 58 place count 96 transition count 234
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 62 place count 92 transition count 226
Iterating global reduction 3 with 4 rules applied. Total rules applied 66 place count 92 transition count 226
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 70 place count 88 transition count 218
Iterating global reduction 3 with 4 rules applied. Total rules applied 74 place count 88 transition count 218
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 77 place count 85 transition count 212
Iterating global reduction 3 with 3 rules applied. Total rules applied 80 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 82 place count 83 transition count 208
Iterating global reduction 3 with 2 rules applied. Total rules applied 84 place count 83 transition count 208
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 86 place count 81 transition count 204
Iterating global reduction 3 with 2 rules applied. Total rules applied 88 place count 81 transition count 204
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 89 place count 80 transition count 202
Iterating global reduction 3 with 1 rules applied. Total rules applied 90 place count 80 transition count 202
Applied a total of 90 rules in 15 ms. Remains 80 /120 variables (removed 40) and now considering 202/303 (removed 101) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 80/120 places, 202/303 transitions.
[2026-05-25 10:27:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[4] Max Struct:[+inf]
[2026-05-25 10:27:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
// Phase 1: matrix 124 rows 80 cols
[2026-05-25 10:27:48] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[4] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1105 ms. (904 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 649 ms. (1538 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[613] Max Struct:[+inf]
[2026-05-25 10:27:50] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:27:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:50] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:50] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:27:50] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:27:50] [INFO ] [Real]Added 18 Read/Feed constraints in 6 ms returned sat
[2026-05-25 10:27:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:27:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:27:50] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 10:27:50] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:27:50] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 5 ms.
[2026-05-25 10:27:50] [INFO ] Added : 9 causal constraints over 3 iterations in 31 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[613] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[613] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 10:27:51] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:27:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:51] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 10:27:52] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:27:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:27:52] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:27:52] [INFO ] Implicit Places using invariants and state equation in 168 ms returned []
Implicit Place search using SMT with State Equation took 241 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:27:52] [INFO ] Redundant transitions in 2 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 10:27:52] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:27:52] [INFO ] Invariant cache hit.
[2026-05-25 10:27:52] [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) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 4414 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:59] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:59] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:27:59] [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 10:27:59] [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 10:28:00] [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 10:28:00] [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) 0/204 variables, 6/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 7 (OVERLAPS) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 307 constraints, problems are : Problem set: 0 solved, 200 unsolved in 15653 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 20121ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 20122ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20376 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 10:28:12] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[613] Max Struct:[+inf]
[2026-05-25 10:28:12] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:12] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[613] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1051 ms. (950 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 642 ms. (1555 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[638] Max Struct:[+inf]
[2026-05-25 10:28:14] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:28:14] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:28:14] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 10:28:14] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:28:14] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:28:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:28:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:28:14] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 10:28:14] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:28:14] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 5 ms.
[2026-05-25 10:28:14] [INFO ] Added : 9 causal constraints over 3 iterations in 31 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[638] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[638] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 10:28:15] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:28:15] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 10:28:15] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:28:15] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:28:16] [INFO ] Implicit Places using invariants and state equation in 174 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 10:28:16] [INFO ] Redundant transitions in 1 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 10:28:16] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:16] [INFO ] Invariant cache hit.
[2026-05-25 10:28:16] [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) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 4555 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:23] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:23] [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 10:28:23] [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 10:28:23] [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 10:28:24] [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 10:28:24] [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) 0/204 variables, 6/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 7 (OVERLAPS) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 307 constraints, problems are : Problem set: 0 solved, 200 unsolved in 15409 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 20017ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 20018ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20269 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 10:28:36] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[638] Max Struct:[+inf]
[2026-05-25 10:28:36] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:36] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[638] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1280 ms. (780 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 700 ms. (1426 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[638] Max Struct:[+inf]
[2026-05-25 10:28:38] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:28:38] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 10:28:38] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 10:28:38] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:28:38] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:28:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:28:38] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 10:28:38] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 10:28:38] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 10:28:38] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 6 ms.
[2026-05-25 10:28:38] [INFO ] Added : 9 causal constraints over 3 iterations in 33 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[638] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[638] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 10:28:39] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:28:40] [INFO ] Implicit Places using invariants in 80 ms returned []
[2026-05-25 10:28:40] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:28:40] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:28:40] [INFO ] Implicit Places using invariants and state equation in 173 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 10:28:40] [INFO ] Redundant transitions in 0 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 10:28:40] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:28:40] [INFO ] Invariant cache hit.
[2026-05-25 10:28:40] [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) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 4496 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:47] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:47] [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 10:28:47] [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 10:28:48] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:28:48] [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 10:28:48] [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) 0/204 variables, 6/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 7 (OVERLAPS) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 307 constraints, problems are : Problem set: 0 solved, 200 unsolved in 15087 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 19631ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 19632ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19897 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 10:28:59] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[638] Max Struct:[+inf]
[2026-05-25 10:29:00] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:29:00] [INFO ] Flatten gal took : 5 ms
[2026-05-25 10:29:00] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9501906766583834973.gal : 4 ms
[2026-05-25 10:29:00] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5787006306849210930.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/ReachabilityCardinality9501906766583834973.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5787006306849210930.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 40002 steps (8 resets) in 82 ms. (481 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 30 ms. (1290 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality5787006306849210930.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 1045
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1045 after 158850
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :158850 after 1.90899e+08
Interrupted probabilistic random walk after 2025588 steps, run timeout after 3001 ms. (steps per millisecond=674 ) properties seen :0 out of 1
Probabilistic random walk after 2025588 steps, saw 1260713 distinct states, run finished after 3001 ms. (steps per millisecond=674 ) properties seen :0
[2026-05-25 10:29:03] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:29:03] [INFO ] Invariant cache hit.
[2026-05-25 10:29:03] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 7/93 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/93 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 96/189 variables, 55/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 17/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 9/204 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 18 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 1 unsolved in 90 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/86 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 7/93 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 3/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/93 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 96/189 variables, 55/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 17/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 9/204 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 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: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 182ms problems are : Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.90899e+08 after 3.33897e+12
Parikh walk visited 0 properties in 960 ms.
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 80/80 places, 202/202 transitions.
RANDOM walk for 40001 steps (8 resets) in 80 ms. (493 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1993582 steps, run timeout after 3001 ms. (steps per millisecond=664 ) properties seen :0 out of 1
Probabilistic random walk after 1993582 steps, saw 1240791 distinct states, run finished after 3002 ms. (steps per millisecond=664 ) properties seen :0
[2026-05-25 10:29:07] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:29:07] [INFO ] Invariant cache hit.
[2026-05-25 10:29:07] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 7/93 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/93 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 96/189 variables, 55/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 17/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 9/204 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 18 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 1 unsolved in 91 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/86 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 7/93 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 3/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/93 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 96/189 variables, 55/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 17/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 9/204 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 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: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 183ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 920 ms.
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 10:29:08] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:29:08] [INFO ] Implicit Places using invariants in 79 ms returned []
[2026-05-25 10:29:08] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:29:08] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 10:29:08] [INFO ] Implicit Places using invariants and state equation in 173 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 10:29:08] [INFO ] Redundant transitions in 0 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 10:29:08] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 10:29:08] [INFO ] Invariant cache hit.
[2026-05-25 10:29:08] [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) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 4401 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:16] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:16] [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 10:29:16] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:16] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:16] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:29:17] [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) 0/204 variables, 6/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3.33897e+12 after 1.28264e+18
At refinement iteration 7 (OVERLAPS) 0/204 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 307 constraints, problems are : Problem set: 0 solved, 200 unsolved in 15064 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 19511ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 19511ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19779 ms. Remains : 80/80 places, 202/202 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 78 transitions
Reduce isomorphic transitions removed 78 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 84 rules applied. Total rules applied 84 place count 80 transition count 118
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 90 place count 74 transition count 118
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 90 place count 74 transition count 102
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 122 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 152 place count 43 transition count 87
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 159 place count 36 transition count 73
Iterating global reduction 2 with 7 rules applied. Total rules applied 166 place count 36 transition count 73
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 173 place count 29 transition count 59
Iterating global reduction 2 with 7 rules applied. Total rules applied 180 place count 29 transition count 59
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 187 place count 22 transition count 45
Iterating global reduction 2 with 7 rules applied. Total rules applied 194 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 201 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 201 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 203 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 205 place count 20 transition count 37
Applied a total of 205 rules in 12 ms. Remains 20 /80 variables (removed 60) and now considering 37/202 (removed 165) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 37 rows 20 cols
[2026-05-25 10:29:28] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 10:29:28] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:29:28] [INFO ] After 9ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 10:29:28] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 10:29:28] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 10:29:28] [INFO ] After 36ms 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 10:29:28] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 10:29:28] [INFO ] After 9ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 10:29:28] [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 10:29:28] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:29:28] [INFO ] After 35ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 10:29:28] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:29:28] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:29:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5586007312775725596.gal : 0 ms
[2026-05-25 10:29:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality319142616556136801.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/ReachabilityCardinality5586007312775725596.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality319142616556136801.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/ReachabilityCardinality319142616556136801.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :759 after 441230
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :441230 after 6.32845e+09
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :6.32845e+09 after 5.42758e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.42758e+10 after 2.91075e+11
Detected timeout of ITS tools.
[2026-05-25 10:29:43] [INFO ] Flatten gal took : 1 ms
[2026-05-25 10:29:43] [INFO ] Applying decomposition
[2026-05-25 10:29:43] [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/graph12589176762039808559.txt' '-o' '/tmp/graph12589176762039808559.bin' '-w' '/tmp/graph12589176762039808559.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12589176762039808559.bin' '-l' '-1' '-v' '-w' '/tmp/graph12589176762039808559.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:29:43] [INFO ] Decomposing Gal with order
[2026-05-25 10:29:43] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:29:43] [INFO ] Removed a total of 42 redundant transitions.
[2026-05-25 10:29:43] [INFO ] Flatten gal took : 3 ms
[2026-05-25 10:29:43] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 10:29:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3454976781056892379.gal : 1 ms
[2026-05-25 10:29:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15007163623889180542.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/ReachabilityCardinality3454976781056892379.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15007163623889180542.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/ReachabilityCardinality15007163623889180542.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 69
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :69 after 759
Detected timeout of ITS tools.
[2026-05-25 10:29:50] [INFO ] Flatten gal took : 11 ms
[2026-05-25 10:29:50] [INFO ] Applying decomposition
[2026-05-25 10:29:50] [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/graph9384967168269359865.txt' '-o' '/tmp/graph9384967168269359865.bin' '-w' '/tmp/graph9384967168269359865.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph9384967168269359865.bin' '-l' '-1' '-v' '-w' '/tmp/graph9384967168269359865.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:29:50] [INFO ] Decomposing Gal with order
[2026-05-25 10:29:50] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:29:50] [INFO ] Removed a total of 344 redundant transitions.
[2026-05-25 10:29:50] [INFO ] Flatten gal took : 8 ms
[2026-05-25 10:29:50] [INFO ] Fuse similar labels procedure discarded/fused a total of 94 labels/synchronizations in 2 ms.
[2026-05-25 10:29:50] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9319664741523118563.gal : 1 ms
[2026-05-25 10:29:50] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6087998106140308217.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/ReachabilityCardinality9319664741523118563.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6087998106140308217.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/ReachabilityCardinality6087998106140308217.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30175 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:[638] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b128-UpperBounds-15 in 130145 ms.
[2026-05-25 10:29:58] [INFO ] Flatten gal took : 7 ms
[2026-05-25 10:29:58] [INFO ] Applying decomposition
[2026-05-25 10:29:58] [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/graph11453351511586390361.txt' '-o' '/tmp/graph11453351511586390361.bin' '-w' '/tmp/graph11453351511586390361.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph11453351511586390361.bin' '-l' '-1' '-v' '-w' '/tmp/graph11453351511586390361.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:29:58] [INFO ] Decomposing Gal with order
[2026-05-25 10:29:58] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:29:58] [INFO ] Removed a total of 532 redundant transitions.
[2026-05-25 10:29:58] [INFO ] Flatten gal took : 20 ms
[2026-05-25 10:29:58] [INFO ] Fuse similar labels procedure discarded/fused a total of 151 labels/synchronizations in 4 ms.
[2026-05-25 10:29:58] [INFO ] Time to serialize gal into /tmp/UpperBounds14468151004069902612.gal : 2 ms
[2026-05-25 10:29:58] [INFO ] Time to serialize properties into /tmp/UpperBounds13051706561511748191.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/UpperBounds14468151004069902612.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds13051706561511748191.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...285
Loading property file /tmp/UpperBounds13051706561511748191.prop.
Detected timeout of ITS tools.
[2026-05-25 10:58:01] [INFO ] Flatten gal took : 9 ms
[2026-05-25 10:58:01] [INFO ] Time to serialize gal into /tmp/UpperBounds634017982433016770.gal : 2 ms
[2026-05-25 10:58:01] [INFO ] Time to serialize properties into /tmp/UpperBounds15384119838419342380.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/UpperBounds634017982433016770.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds15384119838419342380.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/UpperBounds15384119838419342380.prop.

BK_TIME_CONFINEMENT_REACHED

--------------------
content from stderr:

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600