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.r207-tall-177969919700010.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 Murphy-PT-D2N100, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r207-tall-177969919700010
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 444K
-rw-r--r-- 1 mcc users 7.4K Mar 8 14:25 CTLCardinality.txt
-rw-r--r-- 1 mcc users 77K Mar 8 14:25 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.1K Mar 8 14:24 CTLFireability.txt
-rw-r--r-- 1 mcc users 45K Mar 8 14:24 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 16 08:04 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 16 08:04 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Mar 16 08:05 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Mar 16 08:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.8K Mar 8 14:25 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 88K Mar 8 14:25 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Mar 8 14:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 101K Mar 8 14:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 16 08:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 16 08:05 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 7 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 12K 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 Murphy-PT-D2N100-UpperBounds-00
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-01
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-02
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-03
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-04
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-05
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-06
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-07
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-08
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-09
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-10
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-11
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-12
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-13
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-14
FORMULA_NAME Murphy-PT-D2N100-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779719133716

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Murphy-PT-D2N100
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 14:25:35] [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 14:25:35] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 14:25:35] [INFO ] Load time of PNML (sax parser for PT used): 35 ms
[2026-05-25 14:25:35] [INFO ] Transformed 18 places.
[2026-05-25 14:25:35] [INFO ] Transformed 21 transitions.
[2026-05-25 14:25:35] [INFO ] Parsed PT model containing 18 places and 21 transitions and 81 arcs in 127 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Current structural bounds on expressions (Initially) : Max Seen:[3, 3, 0, 1, 0, 1, 1, 100, 0, 1, 1, 0, 0, 1, 100, 3] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[3, 3, 0, 1, 0, 1, 1, 100, 0, 1, 1, 0, 0, 1, 100, 3] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
// Phase 1: matrix 21 rows 18 cols
[2026-05-25 14:25:35] [INFO ] Computed 4 invariants in 9 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 3, 0, 1, 0, 1, 1, 100, 0, 1, 1, 0, 0, 1, 100, 3] Max Struct:[+inf, +inf, +inf, 303, +inf, 303, 303, 303, +inf, 303, 303, +inf, +inf, 303, 303, +inf]
RANDOM walk for 10033 steps (2 resets) in 16 ms. (590 steps per ms)
BEST_FIRST walk for 160015 steps (32 resets) in 137 ms. (1159 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 3, 2, 153, 2, 153, 121, 127, 1, 111, 121, 2, 1, 111, 129, 3] Max Struct:[+inf, +inf, +inf, 303, +inf, 303, 303, 303, +inf, 303, 303, +inf, +inf, 303, 303, +inf]
[2026-05-25 14:25:35] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive place invariants in 3 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2026-05-25 14:25:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:35] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:25:35] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:35] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:35] [INFO ] Added : 3 causal constraints over 1 iterations in 18 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 5 ms.
[2026-05-25 14:25:35] [INFO ] Added : 3 causal constraints over 1 iterations in 11 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:35] [INFO ] Added : 2 causal constraints over 1 iterations in 13 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive place invariants in 3 ms returned sat
[2026-05-25 14:25:35] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:36] [INFO ] Added : 0 causal constraints over 0 iterations in 5 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:36] [INFO ] Added : 2 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:36] [INFO ] Added : 0 causal constraints over 0 iterations in 8 ms. Result :sat
Minimization took 43 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:36] [INFO ] Added : 0 causal constraints over 0 iterations in 5 ms. Result :sat
Minimization took 21 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 10 ms.
[2026-05-25 14:25:36] [INFO ] Added : 0 causal constraints over 0 iterations in 13 ms. Result :sat
Minimization took 17 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:36] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:36] [INFO ] Added : 0 causal constraints over 0 iterations in 5 ms. Result :sat
Minimization took 18 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 6 ms.
[2026-05-25 14:25:36] [INFO ] Added : 0 causal constraints over 0 iterations in 11 ms. Result :sat
Minimization took 21 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 5 ms.
[2026-05-25 14:25:36] [INFO ] Added : 2 causal constraints over 1 iterations in 12 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:36] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:36] [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 14:25:36] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:36] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:36] [INFO ] Added : 0 causal constraints over 0 iterations in 7 ms. Result :sat
Minimization took 19 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 6 ms returned sat
[2026-05-25 14:25:36] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:36] [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 14:25:37] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:37] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:37] [INFO ] Added : 0 causal constraints over 0 iterations in 5 ms. Result :sat
Minimization took 20 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:37] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:37] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:37] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:37] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:37] [INFO ] Added : 3 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 3, 2, 153, 2, 153, 121, 127, 1, 111, 121, 2, 1, 111, 129, 3] Max Struct:[+inf, +inf, +inf, 303, +inf, 303, 303, 303, +inf, 303, 303, +inf, +inf, 303, 303, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 3, 2, 301, 2, 301, 297, 299, 1, 299, 297, 2, 1, 299, 287, 3] Max Struct:[+inf, +inf, +inf, 303, +inf, 303, 303, 303, +inf, 303, 303, +inf, +inf, 303, 303, +inf]
Support contains 16 out of 18 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 21/21 transitions.
Applied a total of 0 rules in 8 ms. Remains 18 /18 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Running 12 sub problems to find dead transitions.
[2026-05-25 14:25:37] [INFO ] Invariant cache hit.
[2026-05-25 14:25:37] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/12 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (OVERLAPS) 3/15 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (OVERLAPS) 21/36 variables, 15/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/36 variables, 6/25 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/36 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (OVERLAPS) 3/39 variables, 3/28 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/39 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 0/39 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/39 variables, and 28 constraints, problems are : Problem set: 0 solved, 12 unsolved in 191 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 18/18 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/12 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (OVERLAPS) 3/15 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (OVERLAPS) 21/36 variables, 15/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/36 variables, 6/25 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/36 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (OVERLAPS) 3/39 variables, 3/28 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/39 variables, 12/40 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/39 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 10 (OVERLAPS) 0/39 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/39 variables, and 40 constraints, problems are : Problem set: 0 solved, 12 unsolved in 192 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 18/18 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 404ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 409ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 427 ms. Remains : 18/18 places, 21/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {10=1, 13=1, 19=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {10=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 49 ms. (steps per millisecond=204 ) properties (out of 16) seen :[3, 3, 2, 117, 2, 117, 111, 107, 1, 103, 111, 2, 1, 103, 105, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 3, 2, 301, 2, 301, 297, 299, 1, 299, 297, 2, 1, 299, 287, 3] Max Struct:[+inf, +inf, +inf, 303, +inf, 303, 303, 303, +inf, 303, 303, +inf, +inf, 303, 303, +inf]
[2026-05-25 14:25:38] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 3, 2, 301, 2, 301, 297, 299, 1, 299, 297, 2, 1, 299, 287, 3] Max Struct:[+inf, +inf, +inf, 303, +inf, 303, 303, 303, +inf, 303, 303, +inf, +inf, 303, 303, +inf]
RANDOM walk for 1000085 steps (2 resets) in 299 ms. (3333 steps per ms)
BEST_FIRST walk for 16000013 steps (32 resets) in 5036 ms. (3176 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 3, 2, 301, 2, 301, 301, 299, 1, 301, 301, 2, 1, 301, 287, 3] Max Struct:[+inf, +inf, +inf, 303, +inf, 303, 303, 303, +inf, 303, 303, +inf, +inf, 303, 303, +inf]
[2026-05-25 14:25:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 10 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:43] [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 14:25:43] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:43] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:25:43] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:43] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:43] [INFO ] Added : 3 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive place invariants in 3 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:43] [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 14:25:43] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:43] [INFO ] Added : 3 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:43] [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 14:25:43] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:43] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:43] [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 14:25:43] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using state equation in 6 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:43] [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 14:25:43] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:43] [INFO ] Added : 2 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:43] [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 14:25:43] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using state equation in 7 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:43] [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 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 4 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:44] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:44] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 11 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:44] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:44] [INFO ] Added : 1 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:44] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:44] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 7 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:44] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:44] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 14 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:44] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:44] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:44] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 3, 2, 301, 2, 301, 301, 299, 1, 301, 301, 2, 1, 301, 287, 3] Max Struct:[+inf, +inf, +inf, 301, +inf, 301, 301, 303, +inf, 301, 301, +inf, +inf, 301, 303, +inf]
FORMULA Murphy-PT-D2N100-UpperBounds-13 301 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D2N100-UpperBounds-10 301 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D2N100-UpperBounds-09 301 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D2N100-UpperBounds-06 301 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D2N100-UpperBounds-05 301 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D2N100-UpperBounds-03 301 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Support contains 10 out of 18 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 18/18 places, 21/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {10=1, 13=1, 19=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {10=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 10) seen :[3, 3, 2, 2, 108, 1, 2, 1, 114, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
[2026-05-25 14:25:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
RANDOM walk for 1000058 steps (2 resets) in 264 ms. (3773 steps per ms)
BEST_FIRST walk for 10000007 steps (20 resets) in 3016 ms. (3314 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
[2026-05-25 14:25:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:48] [INFO ] Added : 3 causal constraints over 1 iterations in 17 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 2 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 17 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 14 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 5 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 2 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 3 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 1 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [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 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 5 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:48] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:48] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 12 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 2 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:48] [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 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 2 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:49] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Support contains 10 out of 18 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 18/18 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 21/21 transitions.
Applied a total of 0 rules in 0 ms. Remains 18 /18 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:25:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:25:49] [INFO ] Implicit Places using invariants in 42 ms returned [6, 7, 8]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 48 ms to find 3 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 15/18 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 49 ms. Remains : 15/18 places, 21/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {9=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {9=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=588 ) properties (out of 10) seen :[3, 3, 2, 2, 108, 1, 2, 1, 102, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:25:49] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
RANDOM walk for 1000077 steps (2 resets) in 225 ms. (4425 steps per ms)
BEST_FIRST walk for 10000008 steps (20 resets) in 2655 ms. (3765 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
[2026-05-25 14:25:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:52] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:25:52] [INFO ] Added : 3 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:52] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:52] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:52] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:52] [INFO ] Added : 3 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 9 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:52] [INFO ] Added : 1 causal constraints over 1 iterations in 21 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:52] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 18 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:52] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 3 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:52] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 16 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:25:52] [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 14:25:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:52] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 287, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 293, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Support contains 10 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:25:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:25:52] [INFO ] Implicit Places using invariants in 23 ms returned []
[2026-05-25 14:25:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:25:52] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:25:52] [INFO ] Implicit Places using invariants and state equation in 32 ms returned []
Implicit Place search using SMT with State Equation took 61 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:25:52] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:25:52] [INFO ] Invariant cache hit.
[2026-05-25 14:25:52] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 123 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 168 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 325ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 325ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 395 ms. Remains : 15/15 places, 21/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {9=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {9=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 18 ms. (steps per millisecond=555 ) properties (out of 10) seen :[3, 3, 2, 2, 111, 1, 2, 1, 101, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 293, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
[2026-05-25 14:25:53] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 293, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
RANDOM walk for 1000055 steps (2 resets) in 223 ms. (4464 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 2630 ms. (3800 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 293, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
[2026-05-25 14:25:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:56] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 10 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 1 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 3 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 2 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:56] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 9 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 13 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 293, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Support contains 10 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:25:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:25:56] [INFO ] Implicit Places using invariants in 26 ms returned []
[2026-05-25 14:25:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:25:56] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:25:56] [INFO ] Implicit Places using invariants and state equation in 27 ms returned []
Implicit Place search using SMT with State Equation took 53 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:25:56] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:25:56] [INFO ] Invariant cache hit.
[2026-05-25 14:25:56] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 112 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 170 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 286ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 286ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 348 ms. Remains : 15/15 places, 21/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {9=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {9=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 18 ms. (steps per millisecond=555 ) properties (out of 10) seen :[3, 3, 2, 2, 112, 1, 2, 1, 101, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
[2026-05-25 14:25:57] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
RANDOM walk for 1000020 steps (2 resets) in 225 ms. (4424 steps per ms)
BEST_FIRST walk for 10000008 steps (20 resets) in 2664 ms. (3752 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
[2026-05-25 14:26:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:00] [INFO ] Added : 3 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:00] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:00] [INFO ] Added : 2 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:00] [INFO ] Added : 2 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:00] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 9 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:00] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:00] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:00] [INFO ] Added : 1 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:00] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 11 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [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 14:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:00] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:00] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 10 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Support contains 10 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:26:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:01] [INFO ] Implicit Places using invariants in 25 ms returned []
[2026-05-25 14:26:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:01] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:26:01] [INFO ] Implicit Places using invariants and state equation in 29 ms returned []
Implicit Place search using SMT with State Equation took 55 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:26:01] [INFO ] Redundant transitions in 1 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:26:01] [INFO ] Invariant cache hit.
[2026-05-25 14:26:01] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 119 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 203 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 328ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 328ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 388 ms. Remains : 15/15 places, 21/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {9=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {9=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=666 ) properties (out of 10) seen :[3, 3, 2, 2, 102, 1, 2, 1, 117, 3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
RANDOM walk for 40052 steps (8 resets) in 400 ms. (99 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 123 ms. (322 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 112 ms. (354 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40002 steps (8 resets) in 142 ms. (279 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 78 ms. (506 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 121 ms. (327 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 127 ms. (312 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 108 ms. (367 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 86 ms. (459 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 63 ms. (625 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 127 ms. (312 steps per ms) remains 12/12 properties
[2026-05-25 14:26:02] [INFO ] Flatten gal took : 19 ms
[2026-05-25 14:26:02] [INFO ] Flatten gal took : 6 ms
[2026-05-25 14:26:02] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8290030923599533718.gal : 4 ms
[2026-05-25 14:26:02] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13794830215875405887.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/ReachabilityCardinality8290030923599533718.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13794830215875405887.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/ReachabilityCardinality13794830215875405887.prop.
SDD proceeding with computation,12 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,12 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,12 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,12 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,12 properties remain. new max is 64
SDD size :36 after 69
SDD proceeding with computation,12 properties remain. new max is 128
SDD size :69 after 217326
SDD proceeding with computation,12 properties remain. new max is 256
SDD size :217326 after 1.82617e+06
SDD proceeding with computation,12 properties remain. new max is 512
SDD size :1.82617e+06 after 5.0899e+07
SDD proceeding with computation,12 properties remain. new max is 1024
SDD size :5.0899e+07 after 3.93425e+08
Interrupted probabilistic random walk after 450883 steps, run timeout after 3001 ms. (steps per millisecond=150 ) properties seen :0 out of 12
Probabilistic random walk after 450883 steps, saw 290389 distinct states, run finished after 3020 ms. (steps per millisecond=149 ) properties seen :0
[2026-05-25 14:26:05] [INFO ] Invariant cache hit.
[2026-05-25 14:26:05] [INFO ] State equation strengthened by 6 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, 12 unsolved
At refinement iteration 1 (OVERLAPS) 4/14 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:05] [INFO ] Deduced a trap composed of 3 places in 291 ms of which 34 ms to minimize.
Problem MAX4 is UNSAT
Problem MAX8 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 1/2 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/14 variables, 0/2 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 4 (OVERLAPS) 21/35 variables, 14/16 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/35 variables, 6/22 constraints. Problems are: Problem set: 2 solved, 10 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/35 variables, 0/22 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 7 (OVERLAPS) 1/36 variables, 1/23 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/23 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/23 constraints. Problems are: Problem set: 2 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 23 constraints, problems are : Problem set: 2 solved, 10 unsolved in 780 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 2 solved, 10 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
SDD proceeding with computation,12 properties remain. new max is 2048
SDD size :3.93425e+08 after 4.29483e+09
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 4/14 variables, 1/1 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 1/2 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/14 variables, 0/2 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 4 (OVERLAPS) 21/35 variables, 14/16 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/35 variables, 6/22 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/35 variables, 8/30 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 0/30 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 8 (OVERLAPS) 1/36 variables, 1/31 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/36 variables, 2/33 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 0/33 constraints. Problems are: Problem set: 2 solved, 10 unsolved
At refinement iteration 11 (OVERLAPS) 0/36 variables, 0/33 constraints. Problems are: Problem set: 2 solved, 10 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 33 constraints, problems are : Problem set: 2 solved, 10 unsolved in 1149 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 10/12 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1944ms problems are : Problem set: 2 solved, 10 unsolved
Fused 10 Parikh solutions to 4 different solutions.
Parikh walk visited 1 properties in 908 ms.
Support contains 9 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Running 12 sub problems to find dead transitions.
[2026-05-25 14:26:08] [INFO ] Invariant cache hit.
[2026-05-25 14:26:08] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 362 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
SDD proceeding with computation,12 properties remain. new max is 4096
SDD size :4.29483e+09 after 1.80534e+10
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 6665 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 7059ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 7060ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7061 ms. Remains : 15/15 places, 21/21 transitions.
RANDOM walk for 40086 steps (8 resets) in 37 ms. (1054 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 34 ms. (1142 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 29 ms. (1333 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 35 ms. (1111 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 28 ms. (1379 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (8 resets) in 43 ms. (909 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 38 ms. (1025 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (8 resets) in 42 ms. (930 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 34 ms. (1142 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (8 resets) in 41 ms. (952 steps per ms) remains 9/9 properties
SDD proceeding with computation,12 properties remain. new max is 8192
SDD size :1.80534e+10 after 4.88734e+10
Interrupted probabilistic random walk after 701613 steps, run timeout after 3001 ms. (steps per millisecond=233 ) properties seen :0 out of 9
Probabilistic random walk after 701613 steps, saw 452207 distinct states, run finished after 3001 ms. (steps per millisecond=233 ) properties seen :0
[2026-05-25 14:26:18] [INFO ] Invariant cache hit.
[2026-05-25 14:26:18] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 1 (OVERLAPS) 5/14 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (OVERLAPS) 21/35 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/35 variables, 6/21 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/35 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 6 (OVERLAPS) 1/36 variables, 1/22 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 9 unsolved in 90 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 1 (OVERLAPS) 5/14 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:18] [INFO ] Deduced a trap composed of 3 places in 32 ms of which 3 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/14 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/14 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (OVERLAPS) 21/35 variables, 14/16 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/35 variables, 6/22 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/35 variables, 7/29 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (OVERLAPS) 1/36 variables, 1/30 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/36 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:18] [INFO ] Deduced a trap composed of 2 places in 23 ms of which 1 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 1/33 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/36 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 12 (OVERLAPS) 0/36 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 33 constraints, problems are : Problem set: 0 solved, 9 unsolved in 264 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 359ms problems are : Problem set: 0 solved, 9 unsolved
Fused 9 Parikh solutions to 4 different solutions.
Parikh walk visited 0 properties in 1304 ms.
Support contains 9 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:26:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:20] [INFO ] Implicit Places using invariants in 19 ms returned []
[2026-05-25 14:26:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:20] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:26:20] [INFO ] Implicit Places using invariants and state equation in 26 ms returned []
Implicit Place search using SMT with State Equation took 61 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:26:20] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:26:20] [INFO ] Invariant cache hit.
[2026-05-25 14:26:20] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 158 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 167 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 332ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 333ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 399 ms. Remains : 15/15 places, 21/21 transitions.
Attempting over-approximation, by ignoring read arcs.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Running SMT prover for 9 properties.
[2026-05-25 14:26:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:26:20] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:20] [INFO ] After 33ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:9
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:26:20] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:20] [INFO ] After 69ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :9
[2026-05-25 14:26:20] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:26:20] [INFO ] After 39ms SMT Verify possible using 6 Read/Feed constraints in natural domain returned unsat :0 sat :9
TRAPS : Iteration 0
[2026-05-25 14:26:20] [INFO ] After 71ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :9
[2026-05-25 14:26:20] [INFO ] After 206ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :9
[2026-05-25 14:26:20] [INFO ] Flatten gal took : 5 ms
[2026-05-25 14:26:20] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:26:20] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17836790183113963377.gal : 1 ms
[2026-05-25 14:26:20] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7604346209999412315.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/ReachabilityCardinality17836790183113963377.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7604346209999412315.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/ReachabilityCardinality7604346209999412315.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :36 after 69
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :69 after 315132
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :315132 after 2.0791e+06
SDD proceeding with computation,9 properties remain. new max is 512
SDD size :2.0791e+06 after 5.0992e+07
SDD proceeding with computation,9 properties remain. new max is 1024
SDD size :5.0992e+07 after 8.52222e+08
SDD proceeding with computation,9 properties remain. new max is 2048
SDD size :8.52222e+08 after 6.63978e+09
SDD proceeding with computation,9 properties remain. new max is 4096
SDD size :6.63978e+09 after 1.80646e+10
SDD proceeding with computation,12 properties remain. new max is 16384
SDD size :4.88734e+10 after 1.17643e+11
SDD proceeding with computation,9 properties remain. new max is 8192
SDD size :1.80646e+10 after 4.42384e+10
Detected timeout of ITS tools.
[2026-05-25 14:26:35] [INFO ] Flatten gal took : 5 ms
[2026-05-25 14:26:35] [INFO ] Applying decomposition
[2026-05-25 14:26:35] [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/graph1127831069979831307.txt' '-o' '/tmp/graph1127831069979831307.bin' '-w' '/tmp/graph1127831069979831307.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1127831069979831307.bin' '-l' '-1' '-v' '-w' '/tmp/graph1127831069979831307.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:26:36] [INFO ] Decomposing Gal with order
[2026-05-25 14:26:36] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:26:36] [INFO ] Flatten gal took : 49 ms
[2026-05-25 14:26:36] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 1 ms.
[2026-05-25 14:26:36] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12932492332816516194.gal : 1 ms
[2026-05-25 14:26:36] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10352759335856904536.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/ReachabilityCardinality12932492332816516194.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10352759335856904536.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/ReachabilityCardinality10352759335856904536.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :36 after 69
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :69 after 3434
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :3434 after 4.24321e+06
SDD proceeding with computation,9 properties remain. new max is 512
SDD size :4.24321e+06 after 1.08908e+08
SDD proceeding with computation,9 properties remain. new max is 1024
SDD size :1.08908e+08 after 1.08908e+08
SDD proceeding with computation,9 properties remain. new max is 2048
SDD size :1.08908e+08 after 1.08908e+08
SDD proceeding with computation,9 properties remain. new max is 4096
SDD size :1.08908e+08 after 1.08908e+08
SDD proceeding with computation,9 properties remain. new max is 8192
SDD size :1.08908e+08 after 1.08908e+08
SDD proceeding with computation,9 properties remain. new max is 16384
SDD size :1.08908e+08 after 2.67729e+08
SDD proceeding with computation,12 properties remain. new max is 32768
SDD size :1.17643e+11 after 1.8356e+11
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30508 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-25 14:26:51] [INFO ] Flatten gal took : 6 ms
[2026-05-25 14:26:51] [INFO ] Applying decomposition
[2026-05-25 14:26:51] [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/graph2936840018535601330.txt' '-o' '/tmp/graph2936840018535601330.bin' '-w' '/tmp/graph2936840018535601330.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2936840018535601330.bin' '-l' '-1' '-v' '-w' '/tmp/graph2936840018535601330.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:26:51] [INFO ] Decomposing Gal with order
[2026-05-25 14:26:51] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:26:51] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:26:51] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:26:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16068651278818139252.gal : 1 ms
[2026-05-25 14:26:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13955750086137715656.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/ReachabilityCardinality16068651278818139252.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13955750086137715656.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/ReachabilityCardinality13955750086137715656.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 12
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :12 after 42
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :42 after 96
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :96 after 198
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :198 after 396
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :396 after 18786
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :18786 after 1.68454e+07
SDD proceeding with computation,9 properties remain. new max is 512
SDD size :1.68454e+07 after 2.67658e+10
SDD proceeding with computation,9 properties remain. new max is 1024
SDD size :2.67658e+10 after 2.6871e+10
Detected timeout of ITS tools.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[3, 3, 2, 2, 299, 1, 2, 1, 295, 3] Max Struct:[+inf, +inf, +inf, +inf, 303, +inf, +inf, +inf, 303, +inf]
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-00
Current structural bounds on expressions (Initially) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:41] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10039 steps (2 resets) in 4 ms. (2007 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:41] [INFO ] [Real]Absence check using 1 positive place invariants in 32 ms returned sat
[2026-05-25 14:27:41] [INFO ] [Real]Absence check using state equation in 95 ms returned sat
[2026-05-25 14:27:41] [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 14:27:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:41] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:41] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:41] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:41] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:41] [INFO ] Added : 3 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 4 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 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.1 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 7 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:27:41] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:27:41] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 31 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 37 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 70ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 70ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 77 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:41] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 296 ms. (3367 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 474 ms. (2105 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:42] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:27:42] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:42] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:42] [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 14:27:42] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:27:42] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:27:42] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:42] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 3 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 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:27:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:42] [INFO ] Implicit Places using invariants in 18 ms returned []
[2026-05-25 14:27:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:42] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:42] [INFO ] Implicit Places using invariants and state equation in 18 ms returned []
Implicit Place search using SMT with State Equation took 38 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:42] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:27:42] [INFO ] Invariant cache hit.
[2026-05-25 14:27:42] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 34 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 35 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 70ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 70ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 114 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2500 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:42] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:42] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:42] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16051893269535175251.gal : 0 ms
[2026-05-25 14:27:42] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4305550099249295447.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/ReachabilityCardinality16051893269535175251.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4305550099249295447.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/ReachabilityCardinality4305550099249295447.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.002387,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

RANDOM walk for 40001 steps (8 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
Verifying 1 reachability properties.
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002551,4136,1,0,5,44,7,0,25,26,0
BEST_FIRST walk for 40002 steps (8 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 19 ms. (steps per millisecond=0 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-00 3 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-00 in 1444 ms.
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-01
Current structural bounds on expressions (Initially) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[3] Max Struct:[+inf]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:27:42] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10035 steps (2 resets) in 4 ms. (2007 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:42] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:42] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:27:42] [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 14:27:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:42] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:42] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:42] [INFO ] [Nat]Added 6 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:42] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 5 ms.
[2026-05-25 14:27:42] [INFO ] Added : 3 causal constraints over 1 iterations in 14 ms. Result :sat
Minimization took 5 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 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 1 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:27:42] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:27:42] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 42 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 34 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 81ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 81ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 82 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=1666 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:43] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 227 ms. (4385 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 186 ms. (5347 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:43] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:27:43] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:43] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:27:43] [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 14:27:43] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:27:43] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:27:43] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:43] [INFO ] Added : 3 causal constraints over 1 iterations in 3 ms. Result :sat
Minimization took 2 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 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:27:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:43] [INFO ] Implicit Places using invariants in 13 ms returned []
[2026-05-25 14:27:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:43] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:43] [INFO ] Implicit Places using invariants and state equation in 16 ms returned []
Implicit Place search using SMT with State Equation took 29 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:43] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:27:43] [INFO ] Invariant cache hit.
[2026-05-25 14:27:43] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 32 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 38 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 74ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 74ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 107 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=1111 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:43] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:43] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4694471277552316881.gal : 0 ms
[2026-05-25 14:27:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11875347482602276717.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/ReachabilityCardinality4694471277552316881.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11875347482602276717.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/ReachabilityCardinality11875347482602276717.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.00272,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002966,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
ITS tools runner thread asked to quit. Dying gracefully.
BEST_FIRST walk for 40000 steps (8 resets) in 42 ms. (930 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 3 ms. (steps per millisecond=4 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-01 3 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-01 in 897 ms.
Starting property specific reduction for Murphy-PT-D2N100-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]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:27:43] [INFO ] Computed 1 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 4 ms. (2000 steps per ms)
BEST_FIRST walk for 10000 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:43] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:43] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:27:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:43] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:43] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:27:43] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:43] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:43] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:43] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 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 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 0 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:27:43] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:27:43] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 34 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 36 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 74ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 74ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 74 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=1428 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:43] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 225 ms. (4424 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 184 ms. (5405 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:44] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:27:44] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:44] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:44] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:27:44] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:27:44] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:44] [INFO ] Added : 2 causal constraints over 1 iterations in 3 ms. Result :sat
Minimization took 2 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 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:27:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:44] [INFO ] Implicit Places using invariants in 15 ms returned []
[2026-05-25 14:27:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:44] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:44] [INFO ] Implicit Places using invariants and state equation in 17 ms returned []
Implicit Place search using SMT with State Equation took 33 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:44] [INFO ] Redundant transitions in 1 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:27:44] [INFO ] Invariant cache hit.
[2026-05-25 14:27:44] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 32 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 35 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 72ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 72ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 112 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=1428 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:44] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:44] [INFO ] Flatten gal took : 4 ms
[2026-05-25 14:27:44] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17763853883936738861.gal : 0 ms
[2026-05-25 14:27:44] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10875133020095105362.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/ReachabilityCardinality17763853883936738861.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10875133020095105362.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/ReachabilityCardinality10875133020095105362.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.002312,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002454,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 45 ms. (869 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 15 ms. (2500 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 3 ms. (steps per millisecond=4 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-02 2 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-02 in 810 ms.
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-04
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:27:44] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10057 steps (2 resets) in 3 ms. (2514 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:44] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:27:44] [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 14:27:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:44] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:27:44] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:44] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:44] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:44] [INFO ] Added : 2 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 4 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 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 1 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:27:44] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:27:44] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 32 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 35 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 70ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 70ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 71 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=1428 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 227 ms. (4385 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 173 ms. (5747 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:45] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:45] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:45] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:45] [INFO ] [Nat]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:27:45] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:45] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:27:45] [INFO ] Added : 2 causal constraints over 1 iterations in 2 ms. Result :sat
Minimization took 2 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 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:27:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:45] [INFO ] Implicit Places using invariants in 13 ms returned []
[2026-05-25 14:27:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:45] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:45] [INFO ] Implicit Places using invariants and state equation in 22 ms returned []
Implicit Place search using SMT with State Equation took 35 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:45] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:27:45] [INFO ] Invariant cache hit.
[2026-05-25 14:27:45] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 32 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 35 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 69ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 70ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 111 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=1666 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:27:45] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:45] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:45] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1210232034425289458.gal : 9 ms
[2026-05-25 14:27:45] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10025331456715047281.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/ReachabilityCardinality1210232034425289458.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10025331456715047281.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/ReachabilityCardinality10025331456715047281.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.002251,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
RANDOM walk for 40001 steps (8 resets) in 38 ms. (1025 steps per ms) remains 1/1 properties
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002523,4136,1,0,5,44,7,0,25,26,0
BEST_FIRST walk for 40002 steps (8 resets) in 13 ms. (2857 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 3 ms. (steps per millisecond=4 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-04 2 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-04 in 798 ms.
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-07
Current structural bounds on expressions (Initially) : Max Seen:[100] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[100] Max Struct:[303]
Current structural bounds on expressions (Before main loop) : Max Seen:[100] Max Struct:[303]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:27:45] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[100] Max Struct:[303]
RANDOM walk for 10014 steps (2 resets) in 3 ms. (2503 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[109] Max Struct:[303]
[2026-05-25 14:27:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:45] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:45] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:45] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:27:45] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:45] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:45] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:45] [INFO ] Added : 0 causal constraints over 0 iterations in 3 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[109] Max Struct:[303]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[201] Max Struct:[303]
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Running 12 sub problems to find dead transitions.
[2026-05-25 14:27:45] [INFO ] Invariant cache hit.
[2026-05-25 14:27:45] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 181 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 167 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 379ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 379ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 380 ms. Remains : 15/15 places, 21/21 transitions.
[2026-05-25 14:27:45] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[201] Max Struct:[303]
RANDOM walk for 1000020 steps (2 resets) in 205 ms. (4854 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 257 ms. (3875 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[201] Max Struct:[303]
[2026-05-25 14:27:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:46] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:46] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2026-05-25 14:27:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:46] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:27:46] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:46] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:46] [INFO ] Deduced a trap composed of 3 places in 42 ms of which 2 ms to minimize.
[2026-05-25 14:27:46] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 49 ms
[2026-05-25 14:27:46] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:46] [INFO ] Added : 3 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 24 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[201] Max Struct:[303]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[299] Max Struct:[303]
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:27:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:46] [INFO ] Implicit Places using invariants in 20 ms returned []
[2026-05-25 14:27:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:46] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:46] [INFO ] Implicit Places using invariants and state equation in 32 ms returned []
Implicit Place search using SMT with State Equation took 59 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:46] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:27:46] [INFO ] Invariant cache hit.
[2026-05-25 14:27:46] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 242 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 162 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 425ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 425ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 488 ms. Remains : 15/15 places, 21/21 transitions.
[2026-05-25 14:27:46] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[299] Max Struct:[303]
RANDOM walk for 1000009 steps (2 resets) in 203 ms. (4902 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 255 ms. (3906 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[299] Max Struct:[303]
[2026-05-25 14:27:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:47] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:47] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:47] [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 14:27:47] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:47] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:27:47] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:47] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:47] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:47] [INFO ] Added : 3 causal constraints over 1 iterations in 11 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[299] Max Struct:[303]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[299] Max Struct:[303]
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:27:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:47] [INFO ] Implicit Places using invariants in 20 ms returned []
[2026-05-25 14:27:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:47] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:47] [INFO ] Implicit Places using invariants and state equation in 27 ms returned []
Implicit Place search using SMT with State Equation took 57 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:47] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:27:47] [INFO ] Invariant cache hit.
[2026-05-25 14:27:47] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 119 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 194 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 346ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 346ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 409 ms. Remains : 15/15 places, 21/21 transitions.
[2026-05-25 14:27:47] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:47] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:47] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9554525185554390360.gal : 1 ms
[2026-05-25 14:27:47] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality17277561666978243104.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/ReachabilityCardinality9554525185554390360.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality17277561666978243104.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40167 steps (8 resets) in 14 ms. (2677 steps per ms) remains 2/2 properties

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality17277561666978243104.prop.
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :19 after 36
BEST_FIRST walk for 40002 steps (8 resets) in 18 ms. (2105 steps per ms) remains 2/2 properties
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :36 after 69
BEST_FIRST walk for 40004 steps (8 resets) in 70 ms. (563 steps per ms) remains 2/2 properties
SDD proceeding with computation,2 properties remain. new max is 128
SDD size :69 after 217326
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :217326 after 1.82617e+06
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :1.82617e+06 after 5.0899e+07
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :5.0899e+07 after 3.93425e+08
SDD proceeding with computation,2 properties remain. new max is 2048
SDD size :3.93425e+08 after 4.29483e+09
Interrupted probabilistic random walk after 470192 steps, run timeout after 3001 ms. (steps per millisecond=156 ) properties seen :0 out of 2
Probabilistic random walk after 470192 steps, saw 302516 distinct states, run finished after 3001 ms. (steps per millisecond=156 ) properties seen :0
[2026-05-25 14:27:51] [INFO ] Invariant cache hit.
[2026-05-25 14:27:51] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:51] [INFO ] Deduced a trap composed of 3 places in 61 ms of which 3 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 9/15 variables, 6/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/21 variables, 3/11 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 3/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/21 variables, 0/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 15/36 variables, 9/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 0/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/36 variables, 0/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 23 constraints, problems are : Problem set: 1 solved, 1 unsolved in 109 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 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: 1 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 9/15 variables, 6/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/21 variables, 3/11 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 3/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/21 variables, 0/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 15/36 variables, 9/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 1/24 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/36 variables, 0/24 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/36 variables, 0/24 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 24 constraints, problems are : Problem set: 1 solved, 1 unsolved in 50 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 184ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 25 ms.
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Running 12 sub problems to find dead transitions.
[2026-05-25 14:27:51] [INFO ] Invariant cache hit.
[2026-05-25 14:27:51] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 99 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 169 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 271ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 273ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 275 ms. Remains : 15/15 places, 21/21 transitions.
RANDOM walk for 40177 steps (8 resets) in 20 ms. (1913 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 22 ms. (1739 steps per ms) remains 1/1 properties
SDD proceeding with computation,2 properties remain. new max is 4096
SDD size :4.29483e+09 after 1.80534e+10
Interrupted probabilistic random walk after 3131282 steps, run timeout after 3001 ms. (steps per millisecond=1043 ) properties seen :0 out of 1
Probabilistic random walk after 3131282 steps, saw 1998207 distinct states, run finished after 3001 ms. (steps per millisecond=1043 ) properties seen :0
[2026-05-25 14:27:54] [INFO ] Invariant cache hit.
[2026-05-25 14:27:54] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/15 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/15 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/21 variables, 3/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/21 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 15/36 variables, 9/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 1 unsolved in 32 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:54] [INFO ] Deduced a trap composed of 3 places in 25 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 9/15 variables, 6/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/21 variables, 3/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/21 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 15/36 variables, 9/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 1/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/36 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/36 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 24 constraints, problems are : Problem set: 0 solved, 1 unsolved in 81 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 119ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 29 ms.
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:27:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:54] [INFO ] Implicit Places using invariants in 23 ms returned []
[2026-05-25 14:27:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:54] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:27:54] [INFO ] Implicit Places using invariants and state equation in 25 ms returned []
Implicit Place search using SMT with State Equation took 49 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:54] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:27:54] [INFO ] Invariant cache hit.
[2026-05-25 14:27:54] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 105 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 159 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 268ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 268ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 322 ms. Remains : 15/15 places, 21/21 transitions.
Attempting over-approximation, by ignoring read arcs.
Graph (complete) has 36 edges and 15 vertex of which 6 are kept as prefixes of interest. Removing 9 places using SCC suffix rule.0 ms
Discarding 9 places :
Also discarding 12 output transitions
Drop transitions (Output transitions of discarded places.) removed 12 transitions
Applied a total of 1 rules in 1 ms. Remains 6 /15 variables (removed 9) and now considering 9/21 (removed 12) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 9 rows 6 cols
[2026-05-25 14:27:55] [INFO ] Computed 1 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:27:55] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:55] [INFO ] After 24ms 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 14:27:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:55] [INFO ] After 4ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 14:27:55] [INFO ] State equation strengthened by 3 read => feed constraints.
[2026-05-25 14:27:55] [INFO ] After 3ms SMT Verify possible using 3 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 14:27:55] [INFO ] After 5ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:27:55] [INFO ] After 30ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:27:55] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:55] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:55] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9210691706112026137.gal : 1 ms
[2026-05-25 14:27:55] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13745096793640922734.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/ReachabilityCardinality9210691706112026137.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13745096793640922734.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/ReachabilityCardinality13745096793640922734.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 64974
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :64974 after 348281
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :5.40213e+07 after 5.40483e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.58862e+08 after 2.58895e+08
SDD proceeding with computation,2 properties remain. new max is 8192
SDD size :1.80534e+10 after 4.88734e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :6.8649e+08 after 6.8651e+08
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.50711e+09 after 1.50715e+09
Detected timeout of ITS tools.
[2026-05-25 14:28:10] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:10] [INFO ] Applying decomposition
[2026-05-25 14:28:10] [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/graph3358995351321241492.txt' '-o' '/tmp/graph3358995351321241492.bin' '-w' '/tmp/graph3358995351321241492.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph3358995351321241492.bin' '-l' '-1' '-v' '-w' '/tmp/graph3358995351321241492.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:28:10] [INFO ] Decomposing Gal with order
[2026-05-25 14:28:10] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:28:10] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:10] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:28:10] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16832195640697609188.gal : 1 ms
[2026-05-25 14:28:10] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5447887505875811464.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/ReachabilityCardinality16832195640697609188.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5447887505875811464.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/ReachabilityCardinality5447887505875811464.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 3434
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :3434 after 4.59681e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.08138e+08 after 1.08149e+08
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.08149e+08 after 1.08153e+08
SDD proceeding with computation,2 properties remain. new max is 16384
SDD size :4.88734e+10 after 1.17643e+11
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.86253e+08 after 1.86278e+08
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.86278e+08 after 1.86278e+08
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :2.67621e+08 after 2.69299e+08
SDD proceeding with computation,1 properties remain. new max is 16384
SDD size :9.17311e+08 after 9.19039e+08
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30148 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-25 14:28:25] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:25] [INFO ] Applying decomposition
[2026-05-25 14:28:25] [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/graph8406424666408808394.txt' '-o' '/tmp/graph8406424666408808394.bin' '-w' '/tmp/graph8406424666408808394.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph8406424666408808394.bin' '-l' '-1' '-v' '-w' '/tmp/graph8406424666408808394.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:28:25] [INFO ] Decomposing Gal with order
[2026-05-25 14:28:25] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:28:25] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:25] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:28:25] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7329038637467784979.gal : 0 ms
[2026-05-25 14:28:25] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13427515692908667889.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/ReachabilityCardinality7329038637467784979.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13427515692908667889.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/ReachabilityCardinality13427515692908667889.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 12
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :12 after 42
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :42 after 96
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :96 after 198
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :198 after 396
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :396 after 18786
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :18786 after 1.87171e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.87171e+07 after 2.67658e+10
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.67658e+10 after 2.69631e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.69631e+10 after 2.71505e+10
Detected timeout of ITS tools.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[299] Max Struct:[303]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-07 in 89978 ms.
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-08
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:29:15] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10055 steps (2 resets) in 36 ms. (271 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 3 ms. (2500 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:15] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:15] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:29:15] [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 14:29:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:15] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:29:15] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:29:15] [INFO ] [Nat]Added 6 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:15] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:15] [INFO ] Added : 1 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 3 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 1 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:15] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:29:15] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 24 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 33 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 82ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 82ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 83 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=2000 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:15] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 251 ms. (3968 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 182 ms. (5464 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:15] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:29:15] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:15] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:15] [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 14:29:15] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:15] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:15] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:15] [INFO ] Added : 3 causal constraints over 2 iterations in 4 ms. Result :sat
Minimization took 2 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:15] [INFO ] Implicit Places using invariants in 12 ms returned []
[2026-05-25 14:29:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:16] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:16] [INFO ] Implicit Places using invariants and state equation in 16 ms returned []
Implicit Place search using SMT with State Equation took 31 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:16] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:16] [INFO ] Invariant cache hit.
[2026-05-25 14:29:16] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 30 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 41 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 75ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 76ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 116 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=3333 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:16] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:29:16] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:29:16] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12325717273397071372.gal : 1 ms
[2026-05-25 14:29:16] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7867364371042455137.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/ReachabilityCardinality12325717273397071372.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7867364371042455137.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/ReachabilityCardinality7867364371042455137.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.002414,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002673,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40002 steps (8 resets) in 41 ms. (952 steps per ms) remains 1/1 properties
ITS tools runner thread asked to quit. Dying gracefully.
BEST_FIRST walk for 40004 steps (8 resets) in 20 ms. (1904 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 3 ms. (steps per millisecond=4 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-08 1 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-08 in 911 ms.
Starting property specific reduction for Murphy-PT-D2N100-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]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:29:16] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10045 steps (2 resets) in 12 ms. (772 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 3 ms. (2500 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:16] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:16] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:29:16] [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 14:29:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:16] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:29:16] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:29:16] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:16] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:16] [INFO ] Added : 2 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 4 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 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.1 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 1 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:16] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:29:16] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 35 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 37 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 75ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 75ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 76 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=1666 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:16] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 239 ms. (4166 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 184 ms. (5405 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:16] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:29:16] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:16] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:16] [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 14:29:16] [INFO ] [Nat]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:29:16] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:16] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:29:16] [INFO ] Added : 2 causal constraints over 1 iterations in 3 ms. Result :sat
Minimization took 2 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 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:16] [INFO ] Implicit Places using invariants in 18 ms returned []
[2026-05-25 14:29:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:16] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:16] [INFO ] Implicit Places using invariants and state equation in 19 ms returned []
Implicit Place search using SMT with State Equation took 39 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:16] [INFO ] Redundant transitions in 1 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:16] [INFO ] Invariant cache hit.
[2026-05-25 14:29:16] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 35 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 40 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 78ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 78ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 124 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=1428 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:17] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:29:17] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:17] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14481205186195364226.gal : 0 ms
[2026-05-25 14:29:17] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality17297695391747050683.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/ReachabilityCardinality14481205186195364226.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality17297695391747050683.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/ReachabilityCardinality17297695391747050683.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.003503,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.003691,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 39 ms. (1000 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (8 resets) in 15 ms. (2500 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 3 ms. (steps per millisecond=4 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-11 2 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-11 in 854 ms.
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-12
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:29:17] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10076 steps (2 resets) in 3 ms. (2519 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:17] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:17] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:29:17] [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 14:29:17] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:17] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:29:17] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:17] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:17] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 4 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 0 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:17] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 35 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 36 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 75ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 75ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 76 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=2000 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 224 ms. (4444 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 181 ms. (5494 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:17] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:17] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:17] [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 14:29:17] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:17] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:17] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:29:17] [INFO ] Added : 3 causal constraints over 2 iterations in 3 ms. Result :sat
Minimization took 2 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:17] [INFO ] Implicit Places using invariants in 12 ms returned []
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:17] [INFO ] Implicit Places using invariants and state equation in 22 ms returned []
Implicit Place search using SMT with State Equation took 35 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:17] [INFO ] Redundant transitions in 1 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 29 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 31 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 65ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 65ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 104 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=1666 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:17] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:17] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:17] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11255952439614118064.gal : 0 ms
[2026-05-25 14:29:17] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13642565642247044193.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/ReachabilityCardinality11255952439614118064.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13642565642247044193.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/ReachabilityCardinality13642565642247044193.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.002575,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002754,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40002 steps (8 resets) in 24 ms. (1600 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 19 ms. (2000 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 3 ms. (steps per millisecond=4 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-12 1 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-12 in 795 ms.
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-14
Current structural bounds on expressions (Initially) : Max Seen:[100] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[100] Max Struct:[303]
Current structural bounds on expressions (Before main loop) : Max Seen:[100] Max Struct:[303]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:29:17] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[100] Max Struct:[303]
RANDOM walk for 10101 steps (2 resets) in 4 ms. (2020 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 3 ms. (2500 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[109] Max Struct:[303]
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:17] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:17] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:29:17] [INFO ] [Real]Added 6 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:29:17] [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 14:29:17] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:17] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:29:17] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:17] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:17] [INFO ] Added : 0 causal constraints over 0 iterations in 2 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[109] Max Struct:[303]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[291] Max Struct:[303]
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Running 12 sub problems to find dead transitions.
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 112 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 150 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 265ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 265ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 265 ms. Remains : 15/15 places, 21/21 transitions.
[2026-05-25 14:29:18] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[291] Max Struct:[303]
RANDOM walk for 1000029 steps (2 resets) in 205 ms. (4854 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 255 ms. (3906 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[291] Max Struct:[303]
[2026-05-25 14:29:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:18] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:18] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:29:18] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:18] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:18] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:29:18] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:29:18] [INFO ] [Nat]Added 6 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:29:18] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:29:18] [INFO ] Added : 2 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 12 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[291] Max Struct:[303]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[291] Max Struct:[303]
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:29:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:18] [INFO ] Implicit Places using invariants in 24 ms returned []
[2026-05-25 14:29:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:18] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:29:18] [INFO ] Implicit Places using invariants and state equation in 30 ms returned []
Implicit Place search using SMT with State Equation took 55 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:18] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:29:18] [INFO ] Invariant cache hit.
[2026-05-25 14:29:18] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 100 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 154 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 257ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 257ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 320 ms. Remains : 15/15 places, 21/21 transitions.
RANDOM walk for 40149 steps (8 resets) in 19 ms. (2007 steps per ms) remains 2/2 properties
[2026-05-25 14:29:19] [INFO ] Flatten gal took : 7 ms
[2026-05-25 14:29:19] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7869435455699898687.gal : 0 ms
[2026-05-25 14:29:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15734508083929301317.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/ReachabilityCardinality7869435455699898687.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15734508083929301317.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/ReachabilityCardinality15734508083929301317.prop.
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :36 after 69
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 2/2 properties
SDD proceeding with computation,2 properties remain. new max is 128
SDD size :69 after 217326
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :217326 after 1.82617e+06
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :1.82617e+06 after 5.0899e+07
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :5.0899e+07 after 3.93425e+08
SDD proceeding with computation,2 properties remain. new max is 2048
SDD size :3.93425e+08 after 4.29483e+09
Interrupted probabilistic random walk after 545681 steps, run timeout after 3001 ms. (steps per millisecond=181 ) properties seen :0 out of 2
Probabilistic random walk after 545681 steps, saw 351791 distinct states, run finished after 3001 ms. (steps per millisecond=181 ) properties seen :0
[2026-05-25 14:29:22] [INFO ] Invariant cache hit.
[2026-05-25 14:29:22] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:22] [INFO ] Deduced a trap composed of 3 places in 41 ms of which 2 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 9/15 variables, 6/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/21 variables, 3/11 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 3/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/21 variables, 0/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 15/36 variables, 9/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 0/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/36 variables, 0/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 23 constraints, problems are : Problem set: 1 solved, 1 unsolved in 95 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 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: 1 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 9/15 variables, 6/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/8 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/21 variables, 3/11 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 3/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/21 variables, 0/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 15/36 variables, 9/23 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 1/24 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/36 variables, 0/24 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/36 variables, 0/24 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 24 constraints, problems are : Problem set: 1 solved, 1 unsolved in 69 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 171ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 22 ms.
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Running 12 sub problems to find dead transitions.
[2026-05-25 14:29:22] [INFO ] Invariant cache hit.
[2026-05-25 14:29:22] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
SDD proceeding with computation,2 properties remain. new max is 4096
SDD size :4.29483e+09 after 1.80534e+10
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 3090 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 446 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 3569ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 3569ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3570 ms. Remains : 15/15 places, 21/21 transitions.
RANDOM walk for 40294 steps (8 resets) in 44 ms. (895 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 17 ms. (2222 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2232271 steps, run timeout after 3030 ms. (steps per millisecond=736 ) properties seen :0 out of 1
Probabilistic random walk after 2232271 steps, saw 1433802 distinct states, run finished after 3031 ms. (steps per millisecond=736 ) properties seen :0
[2026-05-25 14:29:28] [INFO ] Invariant cache hit.
[2026-05-25 14:29:29] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/15 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/15 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 6/21 variables, 3/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/21 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 15/36 variables, 9/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 1 unsolved in 103 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:29] [INFO ] Deduced a trap composed of 3 places in 65 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 9/15 variables, 6/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/15 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 6/21 variables, 3/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/21 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/21 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 15/36 variables, 9/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/36 variables, 1/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/36 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/36 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 24 constraints, problems are : Problem set: 0 solved, 1 unsolved in 175 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 282ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 25 ms.
Support contains 1 out of 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 15/15 places, 21/21 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 21/21 (removed 0) transitions.
[2026-05-25 14:29:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:29] [INFO ] Implicit Places using invariants in 228 ms returned []
[2026-05-25 14:29:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:29] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:29:29] [INFO ] Implicit Places using invariants and state equation in 49 ms returned []
Implicit Place search using SMT with State Equation took 279 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:29] [INFO ] Redundant transitions in 0 ms returned []
Running 12 sub problems to find dead transitions.
[2026-05-25 14:29:29] [INFO ] Invariant cache hit.
[2026-05-25 14:29:29] [INFO ] State equation strengthened by 6 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 22 constraints, problems are : Problem set: 0 solved, 12 unsolved in 114 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 3/12 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 21/33 variables, 12/13 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/33 variables, 6/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/33 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (OVERLAPS) 3/36 variables, 3/22 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 12/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 34 constraints, problems are : Problem set: 0 solved, 12 unsolved in 199 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 15/15 constraints, ReadFeed: 6/6 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 315ms problems are : Problem set: 0 solved, 12 unsolved
Search for dead transitions found 0 dead transitions in 316ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 615 ms. Remains : 15/15 places, 21/21 transitions.
Attempting over-approximation, by ignoring read arcs.
Graph (complete) has 36 edges and 15 vertex of which 6 are kept as prefixes of interest. Removing 9 places using SCC suffix rule.0 ms
Discarding 9 places :
Also discarding 12 output transitions
Drop transitions (Output transitions of discarded places.) removed 12 transitions
Applied a total of 1 rules in 0 ms. Remains 6 /15 variables (removed 9) and now considering 9/21 (removed 12) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 9 rows 6 cols
[2026-05-25 14:29:29] [INFO ] Computed 1 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:29:29] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:29] [INFO ] After 21ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:29:29] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:29] [INFO ] After 4ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 14:29:29] [INFO ] State equation strengthened by 3 read => feed constraints.
[2026-05-25 14:29:30] [INFO ] After 2ms SMT Verify possible using 3 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 14:29:30] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:29:30] [INFO ] After 25ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:29:30] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:29:30] [INFO ] Flatten gal took : 16 ms
[2026-05-25 14:29:30] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15124757211116449593.gal : 1 ms
[2026-05-25 14:29:30] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10722165534684358821.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/ReachabilityCardinality15124757211116449593.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10722165534684358821.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/ReachabilityCardinality10722165534684358821.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 64974
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :64974 after 348281
SDD proceeding with computation,2 properties remain. new max is 8192
SDD size :1.80534e+10 after 4.88734e+10
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :5.40213e+07 after 5.40483e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.58862e+08 after 2.58895e+08
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :6.8649e+08 after 6.8651e+08
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.50711e+09 after 1.50715e+09
SDD proceeding with computation,2 properties remain. new max is 16384
SDD size :4.88734e+10 after 1.17643e+11
Detected timeout of ITS tools.
[2026-05-25 14:29:45] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:45] [INFO ] Applying decomposition
[2026-05-25 14:29:45] [INFO ] Flatten gal took : 0 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph9999762114276649004.txt' '-o' '/tmp/graph9999762114276649004.bin' '-w' '/tmp/graph9999762114276649004.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph9999762114276649004.bin' '-l' '-1' '-v' '-w' '/tmp/graph9999762114276649004.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:29:45] [INFO ] Decomposing Gal with order
[2026-05-25 14:29:45] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:29:45] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:45] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:29:45] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1996630497267088712.gal : 0 ms
[2026-05-25 14:29:45] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2106132172356316851.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/ReachabilityCardinality1996630497267088712.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2106132172356316851.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/ReachabilityCardinality2106132172356316851.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 3434
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :3434 after 4.24321e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.08138e+08 after 1.09704e+08
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.09704e+08 after 1.09704e+08
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.09704e+08 after 1.09704e+08
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.09704e+08 after 1.09704e+08
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :1.09704e+08 after 1.09704e+08
SDD proceeding with computation,1 properties remain. new max is 16384
SDD size :2.67621e+08 after 2.68488e+08
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30157 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-25 14:30:00] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:30:00] [INFO ] Applying decomposition
[2026-05-25 14:30:00] [INFO ] Flatten gal took : 3 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph11900600876970208672.txt' '-o' '/tmp/graph11900600876970208672.bin' '-w' '/tmp/graph11900600876970208672.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph11900600876970208672.bin' '-l' '-1' '-v' '-w' '/tmp/graph11900600876970208672.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:30:00] [INFO ] Decomposing Gal with order
[2026-05-25 14:30:00] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:30:00] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:30:00] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:30:00] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15504205009220103283.gal : 0 ms
[2026-05-25 14:30:00] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5012514007643462408.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/ReachabilityCardinality15504205009220103283.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5012514007643462408.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/ReachabilityCardinality5012514007643462408.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 12
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :12 after 42
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :42 after 96
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :96 after 198
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :198 after 396
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :396 after 18786
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :18786 after 1.68454e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.68454e+07 after 2.67658e+10
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.67658e+10 after 2.67984e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.67984e+10 after 2.67992e+10
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :2.67992e+10 after 2.68007e+10
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :2.68007e+10 after 2.68047e+10
Detected timeout of ITS tools.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[291] Max Struct:[303]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-14 in 92401 ms.
Starting property specific reduction for Murphy-PT-D2N100-UpperBounds-15
Current structural bounds on expressions (Initially) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[3] Max Struct:[+inf]
// Phase 1: matrix 21 rows 15 cols
[2026-05-25 14:30:50] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10016 steps (2 resets) in 7 ms. (1252 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:30:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:30:50] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:30:50] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:30:50] [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 14:30:50] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:30:50] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:30:50] [INFO ] State equation strengthened by 6 read => feed constraints.
[2026-05-25 14:30:50] [INFO ] [Nat]Added 6 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:30:50] [INFO ] Computed and/alt/rep : 12/30/12 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:30:50] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 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 15 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 15/15 places, 21/21 transitions.
Graph (complete) has 42 edges and 15 vertex of which 3 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 3 transition count 4
Applied a total of 2 rules in 1 ms. Remains 3 /15 variables (removed 12) and now considering 4/21 (removed 17) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:30:50] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:30:50] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 29 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 34 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 100ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 100ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 103 ms. Remains : 3/15 places, 4/21 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 4 ms. (steps per millisecond=2500 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:30:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 281 ms. (3546 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 176 ms. (5649 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:30:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:30:50] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:30:50] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:30:50] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:30:50] [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 14:30:50] [INFO ] [Nat]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:30:50] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:30:50] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:30:50] [INFO ] Added : 3 causal constraints over 1 iterations in 3 ms. Result :sat
Minimization took 2 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 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:30:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:30:50] [INFO ] Implicit Places using invariants in 18 ms returned []
[2026-05-25 14:30:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:30:51] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:30:51] [INFO ] Implicit Places using invariants and state equation in 20 ms returned []
Implicit Place search using SMT with State Equation took 38 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:30:51] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:30:51] [INFO ] Invariant cache hit.
[2026-05-25 14:30:51] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 27 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 31 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 59ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 59ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 101 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 3 ms. (steps per millisecond=3333 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:30:51] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:30:51] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:30:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4072812481933293594.gal : 0 ms
[2026-05-25 14:30:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12184489931012438566.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/ReachabilityCardinality4072812481933293594.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12184489931012438566.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/ReachabilityCardinality12184489931012438566.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,6,0.002196,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002363,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 29 ms. (1333 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40000 steps (8 resets) in 16 ms. (2352 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 6 ms. (steps per millisecond=2 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D2N100-UpperBounds-15 3 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D2N100-UpperBounds-15 in 915 ms.
[2026-05-25 14:30:51] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:30:51] [INFO ] Applying decomposition
[2026-05-25 14:30:51] [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/graph5104763317112221921.txt' '-o' '/tmp/graph5104763317112221921.bin' '-w' '/tmp/graph5104763317112221921.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5104763317112221921.bin' '-l' '-1' '-v' '-w' '/tmp/graph5104763317112221921.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:30:51] [INFO ] Decomposing Gal with order
[2026-05-25 14:30:51] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:30:51] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:30:51] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:30:51] [INFO ] Time to serialize gal into /tmp/UpperBounds10218608204766383162.gal : 1 ms
[2026-05-25 14:30:51] [INFO ] Time to serialize properties into /tmp/UpperBounds882571970469488638.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/UpperBounds10218608204766383162.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds882571970469488638.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...283
Loading property file /tmp/UpperBounds882571970469488638.prop.
Detected timeout of ITS tools.
[2026-05-25 14:52:36] [INFO ] Flatten gal took : 4 ms
[2026-05-25 14:52:36] [INFO ] Time to serialize gal into /tmp/UpperBounds489014324665992045.gal : 1 ms
[2026-05-25 14:52:36] [INFO ] Time to serialize properties into /tmp/UpperBounds16596372539188662784.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/UpperBounds489014324665992045.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds16596372539188662784.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/UpperBounds16596372539188662784.prop.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,1.20704e+12,52.0809,701592,2,9701,5,2.30096e+06,6,0,105,2.42323e+06,0
Total reachable state count : 1207044185616

Verifying 2 reachability properties.
Min sum of variable value : 0
Maximum sum along a path : 299
Bounds property Murphy-PT-D2N100-UpperBounds-07 :0 <= p1_3 <= 299
FORMULA Murphy-PT-D2N100-UpperBounds-07 299 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-PT-D2N100-UpperBounds-07,0,52.0839,701592,1,0,7,2.30096e+06,9,1,431,2.42323e+06,4
Min sum of variable value : 0
Maximum sum along a path : 299
Bounds property Murphy-PT-D2N100-UpperBounds-14 :0 <= p1_1 <= 299
FORMULA Murphy-PT-D2N100-UpperBounds-14 299 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-PT-D2N100-UpperBounds-14,0,52.4824,701592,1,0,8,2.30096e+06,10,1,760,2.42323e+06,5
ITS tools runner thread asked to quit. Dying gracefully.
Total runtime 1674254 ms.

BK_STOP 1779720809432

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

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

Sequence of Actions to be Executed by the VM

This is useful if one wants to reexecute the tool in the VM from the submitted image disk.

set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="Murphy-PT-D2N100"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool gold2025"
echo " Input is Murphy-PT-D2N100, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r207-tall-177969919700010"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Murphy-PT-D2N100.tgz
mv Murphy-PT-D2N100 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh

echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "UpperBounds.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;