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-177969919700013.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-D4N050, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r207-tall-177969919700013
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 540K
-rw-r--r-- 1 mcc users 7.0K Mar 8 14:26 CTLCardinality.txt
-rw-r--r-- 1 mcc users 73K Mar 8 14:26 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.0K Mar 8 14:26 CTLFireability.txt
-rw-r--r-- 1 mcc users 33K Mar 8 14:26 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Mar 16 08:06 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 16 08:06 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Mar 16 08:06 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 16 08:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 17K Mar 8 14:26 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 180K Mar 8 14:26 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Mar 8 14:26 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 106K Mar 8 14:26 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 16 08:06 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 16 08:06 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 19K 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-D4N050-UpperBounds-00
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-01
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-02
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-03
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-04
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-05
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-06
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-07
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-08
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-09
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-10
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-11
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-12
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-13
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-14
FORMULA_NAME Murphy-PT-D4N050-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779719138789

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Murphy-PT-D4N050
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 14:25:40] [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 14:25:40] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 14:25:40] [INFO ] Load time of PNML (sax parser for PT used): 41 ms
[2026-05-25 14:25:40] [INFO ] Transformed 30 places.
[2026-05-25 14:25:40] [INFO ] Transformed 35 transitions.
[2026-05-25 14:25:40] [INFO ] Parsed PT model containing 30 places and 35 transitions and 135 arcs in 139 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Current structural bounds on expressions (Initially) : Max Seen:[3, 1, 0, 0, 0, 50, 3, 1, 0, 1, 0, 1, 1, 1, 50, 1] 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, 1, 0, 0, 0, 50, 3, 1, 0, 1, 0, 1, 1, 1, 50, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
// Phase 1: matrix 35 rows 30 cols
[2026-05-25 14:25:40] [INFO ] Computed 6 invariants in 12 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 1, 0, 0, 0, 50, 3, 1, 0, 1, 0, 1, 1, 1, 50, 1] Max Struct:[+inf, 255, +inf, +inf, +inf, 255, +inf, 255, +inf, 255, +inf, 255, 255, 255, 255, 255]
RANDOM walk for 10026 steps (2 resets) in 20 ms. (477 steps per ms)
BEST_FIRST walk for 160016 steps (32 resets) in 133 ms. (1194 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 89, 1, 2, 2, 85, 3, 99, 1, 99, 2, 83, 81, 89, 91, 83] Max Struct:[+inf, 255, +inf, +inf, +inf, 255, +inf, 255, +inf, 255, +inf, 255, 255, 255, 255, 255]
[2026-05-25 14:25:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using 2 positive place invariants in 3 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2026-05-25 14:25:40] [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 14:25:40] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 4 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2026-05-25 14:25:40] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:25:40] [INFO ] [Nat]Added 10 Read/Feed constraints in 3 ms returned sat
[2026-05-25 14:25:40] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:25:40] [INFO ] Added : 3 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 9 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using state equation in 14 ms returned sat
[2026-05-25 14:25:40] [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 14:25:40] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:40] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:40] [INFO ] Added : 0 causal constraints over 0 iterations in 10 ms. Result :sat
Minimization took 71 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:40] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:41] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:41] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:25:41] [INFO ] Deduced a trap composed of 2 places in 27 ms of which 6 ms to minimize.
[2026-05-25 14:25:41] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 45 ms
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:25:41] [INFO ] Added : 3 causal constraints over 1 iterations in 16 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:41] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:25:41] [INFO ] Deduced a trap composed of 2 places in 19 ms of which 1 ms to minimize.
[2026-05-25 14:25:41] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 23 ms
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:41] [INFO ] Added : 3 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:41] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:41] [INFO ] Added : 0 causal constraints over 0 iterations in 6 ms. Result :sat
Minimization took 72 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:25:41] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:41] [INFO ] Added : 3 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:41] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:41] [INFO ] Added : 0 causal constraints over 0 iterations in 6 ms. Result :sat
Minimization took 73 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:41] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:41] [INFO ] Added : 1 causal constraints over 1 iterations in 13 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:41] [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 14:25:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Absence check using state equation in 14 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:41] [INFO ] Added : 0 causal constraints over 0 iterations in 11 ms. Result :sat
Minimization took 53 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:41] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:42] [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 14:25:42] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:25:42] [INFO ] Deduced a trap composed of 2 places in 17 ms of which 2 ms to minimize.
[2026-05-25 14:25:42] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 23 ms
[2026-05-25 14:25:42] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:42] [INFO ] Added : 3 causal constraints over 1 iterations in 14 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:42] [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 14:25:42] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:42] [INFO ] Added : 0 causal constraints over 0 iterations in 5 ms. Result :sat
Minimization took 124 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:42] [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 14:25:42] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using state equation in 19 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:42] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:42] [INFO ] Added : 0 causal constraints over 0 iterations in 11 ms. Result :sat
Minimization took 71 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:25:42] [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 14:25:42] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:42] [INFO ] Added : 0 causal constraints over 0 iterations in 7 ms. Result :sat
Minimization took 60 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:42] [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 14:25:42] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:42] [INFO ] Added : 0 causal constraints over 0 iterations in 6 ms. Result :sat
Minimization took 41 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:42] [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 14:25:42] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:42] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Absence check using state equation in 225 ms returned sat
[2026-05-25 14:25:43] [INFO ] [Nat]Added 10 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:25:43] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:43] [INFO ] Added : 0 causal constraints over 0 iterations in 11 ms. Result :sat
Minimization took 60 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 89, 1, 2, 2, 85, 3, 99, 1, 99, 2, 83, 81, 89, 91, 83] Max Struct:[+inf, 255, +inf, +inf, +inf, 255, +inf, 255, +inf, 255, +inf, 255, 255, 255, 255, 255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 251, 1, 2, 2, 201, 3, 251, 1, 251, 2, 251, 251, 251, 154, 251] Max Struct:[+inf, 255, +inf, +inf, +inf, 255, +inf, 255, +inf, 255, +inf, 255, 255, 255, 255, 255]
Support contains 16 out of 30 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 30/30 places, 35/35 transitions.
Applied a total of 0 rules in 7 ms. Remains 30 /30 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Running 20 sub problems to find dead transitions.
[2026-05-25 14:25:43] [INFO ] Invariant cache hit.
[2026-05-25 14:25:43] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/20 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (OVERLAPS) 5/25 variables, 2/6 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/25 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (OVERLAPS) 35/60 variables, 25/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/60 variables, 10/41 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/60 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (OVERLAPS) 5/65 variables, 5/46 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/65 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/65 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 65/65 variables, and 46 constraints, problems are : Problem set: 0 solved, 20 unsolved in 383 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 4/4 constraints, State Equation: 30/30 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/20 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (OVERLAPS) 5/25 variables, 2/6 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/25 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (OVERLAPS) 35/60 variables, 25/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/60 variables, 10/41 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/60 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (OVERLAPS) 5/65 variables, 5/46 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/65 variables, 20/66 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/65 variables, 0/66 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 10 (OVERLAPS) 0/65 variables, 0/66 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 65/65 variables, and 66 constraints, problems are : Problem set: 0 solved, 20 unsolved in 421 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 4/4 constraints, State Equation: 30/30 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 827ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 833ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 849 ms. Remains : 30/30 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {19=1, 24=1, 34=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {17=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 55 ms. (steps per millisecond=181 ) properties (out of 16) seen :[3, 70, 1, 2, 2, 53, 3, 81, 1, 81, 2, 89, 64, 70, 54, 101]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 251, 1, 2, 2, 201, 3, 251, 1, 251, 2, 251, 251, 251, 154, 251] Max Struct:[+inf, 255, +inf, +inf, +inf, 255, +inf, 255, +inf, 255, +inf, 255, 255, 255, 255, 255]
[2026-05-25 14:25:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 251, 1, 2, 2, 201, 3, 251, 1, 251, 2, 251, 251, 251, 154, 251] Max Struct:[+inf, 255, +inf, +inf, +inf, 255, +inf, 255, +inf, 255, +inf, 255, 255, 255, 255, 255]
RANDOM walk for 1000007 steps (2 resets) in 524 ms. (1904 steps per ms)
BEST_FIRST walk for 16000013 steps (32 resets) in 6782 ms. (2358 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 251, 1, 2, 2, 201, 3, 251, 1, 251, 2, 251, 251, 251, 154, 251] Max Struct:[+inf, 255, +inf, +inf, +inf, 255, +inf, 255, +inf, 255, +inf, 255, 255, 255, 255, 255]
[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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 9 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using 2 positive and 4 generalized 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 ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:25:52] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 20/50/20 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 6 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 13 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 256 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive place invariants in 8 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 5 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using 2 positive and 4 generalized 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 10 Read/Feed constraints in 6 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:52] [INFO ] Added : 1 causal constraints over 1 iterations in 7 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 12 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:25:52] [INFO ] Deduced a trap composed of 2 places in 16 ms of which 1 ms to minimize.
[2026-05-25 14:25:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 20 ms
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:52] [INFO ] Added : 3 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 7 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 9 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:25:52] [INFO ] Deduced a trap composed of 2 places in 16 ms of which 2 ms to minimize.
[2026-05-25 14:25:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 20 ms
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:52] [INFO ] Added : 3 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 7 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 13 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 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:52] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 46 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 12 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 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:52] [INFO ] Added : 3 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:52] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:53] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:53] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:00] [INFO ] [Nat]Absence check using state equation in 7960 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:26:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:01] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:01] [INFO ] Added : 1 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:26:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using state equation in 62 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:01] [INFO ] Deduced a trap composed of 2 places in 22 ms of which 1 ms to minimize.
[2026-05-25 14:26:01] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 26 ms
[2026-05-25 14:26:01] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:01] [INFO ] Added : 3 causal constraints over 1 iterations in 13 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:26:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:01] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:02] [INFO ] [Nat]Absence check using state equation in 801 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:02] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:02] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 6 ms returned sat
[2026-05-25 14:26:02] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:02] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:02] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:06] [INFO ] [Nat]Absence check using state equation in 4511 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:06] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:06] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:06] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:06] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:06] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 4601 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:11] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 9 ms returned unsat
Current structural bounds on expressions (after SMT) : Max Seen:[3, 251, 1, 2, 2, 201, 3, 251, 1, 251, 2, 251, 251, 251, 154, 251] Max Struct:[+inf, 251, +inf, +inf, +inf, 255, +inf, 255, +inf, 251, +inf, 251, 255, 255, 255, 251]
FORMULA Murphy-PT-D4N050-UpperBounds-15 251 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D4N050-UpperBounds-11 251 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D4N050-UpperBounds-09 251 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D4N050-UpperBounds-01 251 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
Support contains 12 out of 30 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 30/30 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 30 /30 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 30/30 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {19=1, 24=1, 34=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {17=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 12) seen :[3, 1, 2, 2, 51, 3, 49, 1, 2, 47, 93, 51]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
[2026-05-25 14:26:11] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
RANDOM walk for 1000002 steps (2 resets) in 476 ms. (2096 steps per ms)
BEST_FIRST walk for 12000010 steps (24 resets) in 5267 ms. (2277 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
[2026-05-25 14:26:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:17] [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 14:26:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:17] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:26:17] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:17] [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 14:26:17] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:17] [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 14:26:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Added 10 Read/Feed constraints in 3 ms returned sat
[2026-05-25 14:26:17] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:17] [INFO ] Added : 1 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 14:26:17] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:26:17] [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 14:26:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:17] [INFO ] Deduced a trap composed of 2 places in 20 ms of which 1 ms to minimize.
[2026-05-25 14:26:17] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 27 ms
[2026-05-25 14:26:17] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:26:17] [INFO ] Added : 3 causal constraints over 1 iterations in 14 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:17] [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 14:26:17] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Absence check using state equation in 14 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:17] [INFO ] Deduced a trap composed of 2 places in 23 ms of which 2 ms to minimize.
[2026-05-25 14:26:17] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 28 ms
[2026-05-25 14:26:17] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:17] [INFO ] Added : 3 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:17] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:17] [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 14:26:18] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:18] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:18] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:18] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:18] [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 14:26:18] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:18] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:18] [INFO ] Added : 3 causal constraints over 1 iterations in 11 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:18] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:18] [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 14:26:18] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:18] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using state equation in 7909 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:26] [INFO ] Added : 1 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 14:26:26] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:26] [INFO ] Deduced a trap composed of 2 places in 15 ms of which 1 ms to minimize.
[2026-05-25 14:26:26] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 20 ms
[2026-05-25 14:26:26] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:26:26] [INFO ] Added : 3 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:26] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:30] [INFO ] [Nat]Absence check using state equation in 4517 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:30] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:30] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:30] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:26:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:30] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:30] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:35] [INFO ] [Nat]Absence check using state equation in 4602 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:35] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:35] [INFO ] [Real]Absence check using 2 positive and 4 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:35] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:35] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:35] [INFO ] [Nat]Absence check using 2 positive and 4 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:35] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:35] [INFO ] [Nat]Added 10 Read/Feed constraints in 5 ms returned sat
[2026-05-25 14:26:35] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:35] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 33 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
Support contains 12 out of 30 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 30/30 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 30 /30 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 30/30 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 30/30 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 30 /30 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:26:35] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:35] [INFO ] Implicit Places using invariants in 50 ms returned [10, 12, 13]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 53 ms to find 3 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 27/30 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 55 ms. Remains : 27/30 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {16=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {18=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 12) seen :[3, 1, 2, 2, 53, 3, 82, 1, 2, 115, 61, 51]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
// Phase 1: matrix 35 rows 27 cols
[2026-05-25 14:26:35] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
RANDOM walk for 1000045 steps (2 resets) in 462 ms. (2159 steps per ms)
BEST_FIRST walk for 12000011 steps (24 resets) in 4752 ms. (2524 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 255, +inf, +inf, 255, 255, 255]
[2026-05-25 14:26:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:41] [INFO ] Added : 3 causal constraints over 1 iterations in 13 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:41] [INFO ] Added : 1 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 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:41] [INFO ] Added : 2 causal constraints over 1 iterations in 11 ms. Result :sat
Minimization took 10 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:41] [INFO ] Added : 2 causal constraints over 1 iterations in 12 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:41] [INFO ] Added : 2 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 25 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:41] [INFO ] Added : 3 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 9 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:41] [INFO ] Added : 1 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 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:41] [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 14:26:41] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:41] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:42] [INFO ] [Nat]Absence check using state equation in 257 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:42] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:42] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:42] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:42] [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 14:26:42] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:42] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:51] [INFO ] [Nat]Absence check using state equation in 9008 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:51] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:51] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:51] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:51] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:51] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:51] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:51] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:51] [INFO ] Deduced a trap composed of 5 places in 30 ms of which 3 ms to minimize.
[2026-05-25 14:26:51] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 36 ms
[2026-05-25 14:26:51] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:51] [INFO ] Added : 2 causal constraints over 1 iterations in 20 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 1, 2, 2, 237, 3, 251, 1, 2, 251, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, 251, +inf, +inf, 251, 255, 255]
FORMULA Murphy-PT-D4N050-UpperBounds-12 251 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D4N050-UpperBounds-07 251 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 1, 2, 2, 237, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
Support contains 10 out of 27 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 27/27 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 27 /27 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 27/27 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {16=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {18=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 26 ms. (steps per millisecond=384 ) properties (out of 10) seen :[3, 1, 2, 2, 57, 3, 1, 2, 80, 61]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 1, 2, 2, 237, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
[2026-05-25 14:26:51] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 1, 2, 2, 237, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
RANDOM walk for 1000011 steps (2 resets) in 445 ms. (2242 steps per ms)
BEST_FIRST walk for 10000010 steps (20 resets) in 3927 ms. (2545 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 1, 2, 2, 237, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
[2026-05-25 14:26:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:55] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:55] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:55] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:55] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:26:55] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:55] [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 14:26:55] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:55] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:55] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:55] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:55] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:55] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:56] [INFO ] Added : 2 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:56] [INFO ] Added : 2 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:56] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:56] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:56] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:56] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:56] [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 14:26:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:56] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:27:05] [INFO ] [Nat]Absence check using state equation in 9007 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:05] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:05] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:27:05] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:05] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:05] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 14:27:05] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:05] [INFO ] [Nat]Added 10 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:05] [INFO ] Deduced a trap composed of 5 places in 21 ms of which 2 ms to minimize.
[2026-05-25 14:27:05] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 27 ms
[2026-05-25 14:27:05] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:05] [INFO ] Added : 2 causal constraints over 1 iterations in 19 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 1, 2, 2, 237, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
Support contains 10 out of 27 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 27/27 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 27 /27 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 27/27 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 27/27 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 27 /27 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:27:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:05] [INFO ] Implicit Places using invariants in 24 ms returned [10]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 25 ms to find 1 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 26/27 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 26 /26 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 28 ms. Remains : 26/27 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {15=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {16=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 10) seen :[3, 1, 2, 2, 51, 3, 1, 2, 81, 56]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
// Phase 1: matrix 35 rows 26 cols
[2026-05-25 14:27:05] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
RANDOM walk for 1000021 steps (2 resets) in 444 ms. (2247 steps per ms)
BEST_FIRST walk for 10000008 steps (20 resets) in 3824 ms. (2614 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255, 255]
[2026-05-25 14:27:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:10] [INFO ] Added : 3 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:10] [INFO ] Added : 1 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 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:10] [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 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:10] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 6 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:10] [INFO ] Added : 1 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 18 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:10] [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 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:10] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:10] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 17 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:10] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:10] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:10] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 251, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 251, 255]
FORMULA Murphy-PT-D4N050-UpperBounds-13 251 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
Support contains 9 out of 26 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 26/26 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 26/26 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {15=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {16=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 26 ms. (steps per millisecond=384 ) properties (out of 9) seen :[3, 1, 2, 2, 61, 3, 1, 2, 51]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
[2026-05-25 14:27:11] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
RANDOM walk for 1000024 steps (2 resets) in 436 ms. (2288 steps per ms)
BEST_FIRST walk for 9000009 steps (18 resets) in 3422 ms. (2629 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
[2026-05-25 14:27:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:14] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:14] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:14] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:14] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:14] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:27:14] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:14] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:14] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:15] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:15] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:15] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 19 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:15] [INFO ] Added : 3 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:15] [INFO ] Added : 1 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 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:15] [INFO ] Added : 2 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:15] [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 14:27:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:15] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 27 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
Support contains 9 out of 26 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 26/26 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 26/26 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 26/26 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:27:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:15] [INFO ] Implicit Places using invariants in 30 ms returned [10]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 31 ms to find 1 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 25/26 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 33 ms. Remains : 25/26 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {19=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {19=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 9) seen :[3, 1, 2, 2, 55, 3, 1, 2, 57]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
// Phase 1: matrix 35 rows 25 cols
[2026-05-25 14:27:15] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
RANDOM walk for 1000000 steps (2 resets) in 424 ms. (2352 steps per ms)
BEST_FIRST walk for 9000008 steps (18 resets) in 3329 ms. (2702 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
[2026-05-25 14:27:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:19] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:27:19] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:19] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:19] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:19] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:19] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:19] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:19] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:19] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:19] [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 14:27:19] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:19] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:19] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 21 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:19] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:20] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:20] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:20] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:20] [INFO ] Added : 1 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 14:27:20] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:20] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Nat]Added 10 Read/Feed constraints in 3 ms returned sat
[2026-05-25 14:27:20] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:20] [INFO ] Added : 2 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 14:27:20] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:27:20] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:20] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:27:20] [INFO ] [Nat]Added 10 Read/Feed constraints in 5 ms returned sat
[2026-05-25 14:27:20] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:20] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
Support contains 9 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 0 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:27:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:20] [INFO ] Implicit Places using invariants in 26 ms returned []
[2026-05-25 14:27:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:20] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:27:20] [INFO ] Implicit Places using invariants and state equation in 29 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 14:27:20] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:27:20] [INFO ] Invariant cache hit.
[2026-05-25 14:27:20] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 188 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 360 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 553ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 554ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 615 ms. Remains : 25/25 places, 35/35 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {19=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {19=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 21 ms. (steps per millisecond=476 ) properties (out of 9) seen :[3, 1, 2, 2, 60, 3, 1, 2, 64]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
RANDOM walk for 40096 steps (8 resets) in 406 ms. (98 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 130 ms. (305 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 133 ms. (298 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40003 steps (8 resets) in 138 ms. (287 steps per ms) remains 11/11 properties
[2026-05-25 14:27:21] [INFO ] Flatten gal took : 42 ms
[2026-05-25 14:27:21] [INFO ] Flatten gal took : 7 ms
BEST_FIRST walk for 40004 steps (8 resets) in 148 ms. (268 steps per ms) remains 11/11 properties
[2026-05-25 14:27:21] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3589698093465953444.gal : 8 ms
[2026-05-25 14:27:21] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10893034309842502560.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/ReachabilityCardinality3589698093465953444.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10893034309842502560.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 40004 steps (8 resets) in 102 ms. (388 steps per ms) remains 11/11 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/ReachabilityCardinality10893034309842502560.prop.
SDD proceeding with computation,11 properties remain. new max is 4
SDD size :1 after 6
SDD proceeding with computation,11 properties remain. new max is 8
SDD size :6 after 36
SDD proceeding with computation,11 properties remain. new max is 16
SDD size :36 after 90
SDD proceeding with computation,11 properties remain. new max is 32
SDD size :90 after 192
BEST_FIRST walk for 40004 steps (8 resets) in 125 ms. (317 steps per ms) remains 11/11 properties
SDD proceeding with computation,11 properties remain. new max is 64
SDD size :192 after 30630
BEST_FIRST walk for 40004 steps (8 resets) in 89 ms. (444 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 73 ms. (540 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 91 ms. (434 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 84 ms. (470 steps per ms) remains 11/11 properties
SDD proceeding with computation,11 properties remain. new max is 128
SDD size :30630 after 243534
BEST_FIRST walk for 40004 steps (8 resets) in 70 ms. (563 steps per ms) remains 11/11 properties
SDD proceeding with computation,11 properties remain. new max is 256
SDD size :243534 after 1.78854e+09
SDD proceeding with computation,11 properties remain. new max is 512
SDD size :1.78854e+09 after 1.89814e+13
Interrupted probabilistic random walk after 199053 steps, run timeout after 3001 ms. (steps per millisecond=66 ) properties seen :0 out of 11
Probabilistic random walk after 199053 steps, saw 136585 distinct states, run finished after 3005 ms. (steps per millisecond=66 ) properties seen :0
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
[2026-05-25 14:27:24] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 8/17 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:24] [INFO ] Deduced a trap composed of 5 places in 33 ms of which 2 ms to minimize.
Problem MAX4 is UNSAT
Problem MAX8 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 1/2 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 4 (OVERLAPS) 29/46 variables, 17/19 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/46 variables, 6/25 constraints. Problems are: Problem set: 2 solved, 9 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/46 variables, 0/25 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 7 (OVERLAPS) 7/53 variables, 5/30 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/53 variables, 2/32 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/53 variables, 0/32 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 10 (OVERLAPS) 2/55 variables, 1/33 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/55 variables, 1/34 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/55 variables, 0/34 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 13 (OVERLAPS) 5/60 variables, 3/37 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/60 variables, 0/37 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 15 (OVERLAPS) 0/60 variables, 0/37 constraints. Problems are: Problem set: 2 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 37 constraints, problems are : Problem set: 2 solved, 9 unsolved in 210 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 2 solved, 9 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 0/0 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 1 (OVERLAPS) 8/17 variables, 1/1 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 1/2 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 4 (OVERLAPS) 29/46 variables, 17/19 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/46 variables, 6/25 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/46 variables, 4/29 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/46 variables, 0/29 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 8 (OVERLAPS) 7/53 variables, 5/34 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/53 variables, 2/36 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/53 variables, 4/40 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/53 variables, 0/40 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 12 (OVERLAPS) 2/55 variables, 1/41 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/55 variables, 1/42 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/55 variables, 0/42 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 15 (OVERLAPS) 5/60 variables, 3/45 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/60 variables, 1/46 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/60 variables, 0/46 constraints. Problems are: Problem set: 2 solved, 9 unsolved
At refinement iteration 18 (OVERLAPS) 0/60 variables, 0/46 constraints. Problems are: Problem set: 2 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 46 constraints, problems are : Problem set: 2 solved, 9 unsolved in 372 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 9/11 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 587ms problems are : Problem set: 2 solved, 9 unsolved
Fused 9 Parikh solutions to 3 different solutions.
Parikh walk visited 0 properties in 5962 ms.
Support contains 9 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Running 20 sub problems to find dead transitions.
[2026-05-25 14:27:31] [INFO ] Invariant cache hit.
[2026-05-25 14:27:31] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 185 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 288 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 478ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 478ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 480 ms. Remains : 25/25 places, 35/35 transitions.
RANDOM walk for 40123 steps (8 resets) in 83 ms. (477 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (8 resets) in 46 ms. (851 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (8 resets) in 54 ms. (727 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 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 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 43 ms. (909 steps per ms) remains 9/9 properties
Interrupted probabilistic random walk after 237067 steps, run timeout after 3001 ms. (steps per millisecond=78 ) properties seen :0 out of 9
Probabilistic random walk after 237067 steps, saw 162352 distinct states, run finished after 3001 ms. (steps per millisecond=78 ) properties seen :0
[2026-05-25 14:27:34] [INFO ] Invariant cache hit.
[2026-05-25 14:27:34] [INFO ] State equation strengthened by 10 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) 8/17 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 14:27:34] [INFO ] Deduced a trap composed of 5 places in 30 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (OVERLAPS) 29/46 variables, 17/19 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/46 variables, 6/25 constraints. Problems are: Problem set: 0 solved, 9 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/46 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (OVERLAPS) 7/53 variables, 5/30 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/53 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/53 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 10 (OVERLAPS) 2/55 variables, 1/33 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/55 variables, 1/34 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/55 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 13 (OVERLAPS) 5/60 variables, 3/37 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/60 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 15 (OVERLAPS) 0/60 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 37 constraints, problems are : Problem set: 0 solved, 9 unsolved in 189 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 1/1 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) 8/17 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (OVERLAPS) 29/46 variables, 17/19 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/46 variables, 6/25 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/46 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/46 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (OVERLAPS) 7/53 variables, 5/34 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/53 variables, 2/36 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/53 variables, 4/40 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/53 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 12 (OVERLAPS) 2/55 variables, 1/41 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/55 variables, 1/42 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/55 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 15 (OVERLAPS) 5/60 variables, 3/45 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/60 variables, 1/46 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/60 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 18 (OVERLAPS) 0/60 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 46 constraints, problems are : Problem set: 0 solved, 9 unsolved in 377 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 569ms problems are : Problem set: 0 solved, 9 unsolved
Fused 9 Parikh solutions to 3 different solutions.
Parikh walk visited 0 properties in 5715 ms.
Support contains 9 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:27:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:41] [INFO ] Implicit Places using invariants in 17 ms returned []
[2026-05-25 14:27:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:41] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:27:41] [INFO ] Implicit Places using invariants and state equation in 30 ms returned []
Implicit Place search using SMT with State Equation took 47 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:41] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:27:41] [INFO ] Invariant cache hit.
[2026-05-25 14:27:41] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 183 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 293 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 480ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 480ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 532 ms. Remains : 25/25 places, 35/35 transitions.
Attempting over-approximation, by ignoring read arcs.
Graph (complete) has 60 edges and 25 vertex of which 22 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.2 ms
Discarding 3 places :
Also discarding 4 output transitions
Drop transitions (Output transitions of discarded places.) removed 4 transitions
Applied a total of 1 rules in 7 ms. Remains 22 /25 variables (removed 3) and now considering 31/35 (removed 4) transitions.
Running SMT prover for 9 properties.
// Phase 1: matrix 31 rows 22 cols
[2026-05-25 14:27:41] [INFO ] Computed 1 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:27:41] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:41] [INFO ] After 53ms 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 14:27:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:41] [INFO ] After 33ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :9
[2026-05-25 14:27:41] [INFO ] State equation strengthened by 9 read => feed constraints.
[2026-05-25 14:27:41] [INFO ] After 46ms SMT Verify possible using 9 Read/Feed constraints in natural domain returned unsat :0 sat :9
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:41] [INFO ] Deduced a trap composed of 2 places in 25 ms of which 2 ms to minimize.
[2026-05-25 14:27:41] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 33 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:41] [INFO ] Deduced a trap composed of 2 places in 21 ms of which 2 ms to minimize.
[2026-05-25 14:27:41] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 27 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:41] [INFO ] Deduced a trap composed of 2 places in 15 ms of which 1 ms to minimize.
[2026-05-25 14:27:41] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 19 ms
TRAPS : Iteration 1
[2026-05-25 14:27:41] [INFO ] After 185ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :9
[2026-05-25 14:27:41] [INFO ] After 276ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :9
[2026-05-25 14:27:41] [INFO ] Flatten gal took : 8 ms
[2026-05-25 14:27:41] [INFO ] Flatten gal took : 4 ms
[2026-05-25 14:27:41] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14877547673136537873.gal : 1 ms
[2026-05-25 14:27:41] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4351701417567481748.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/ReachabilityCardinality14877547673136537873.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4351701417567481748.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/ReachabilityCardinality4351701417567481748.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 44760
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :44760 after 275526
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :275526 after 3.85949e+08
Detected timeout of ITS tools.
[2026-05-25 14:27:57] [INFO ] Flatten gal took : 10 ms
[2026-05-25 14:27:57] [INFO ] Applying decomposition
[2026-05-25 14:27:57] [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/graph14197616296927750184.txt' '-o' '/tmp/graph14197616296927750184.bin' '-w' '/tmp/graph14197616296927750184.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph14197616296927750184.bin' '-l' '-1' '-v' '-w' '/tmp/graph14197616296927750184.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:27:57] [INFO ] Decomposing Gal with order
[2026-05-25 14:27:57] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:27:57] [INFO ] Flatten gal took : 31 ms
[2026-05-25 14:27:57] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 1 ms.
[2026-05-25 14:27:57] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14061069924641767643.gal : 2 ms
[2026-05-25 14:27:57] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11656953890011159881.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/ReachabilityCardinality14061069924641767643.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11656953890011159881.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/ReachabilityCardinality11656953890011159881.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 969
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :969 after 421209
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :421209 after 9.43713e+12
SDD proceeding with computation,9 properties remain. new max is 512
SDD size :9.43713e+12 after 9.43724e+12
SDD proceeding with computation,9 properties remain. new max is 1024
SDD size :9.43724e+12 after 9.45098e+12
SDD proceeding with computation,9 properties remain. new max is 2048
SDD size :9.45098e+12 after 9.45098e+12
SDD proceeding with computation,9 properties remain. new max is 4096
SDD size :9.45098e+12 after 9.45098e+12
SDD proceeding with computation,9 properties remain. new max is 8192
SDD size :9.45098e+12 after 9.45104e+12
SDD proceeding with computation,9 properties remain. new max is 16384
SDD size :9.45104e+12 after 3.97294e+13
Detected timeout of ITS tools.
[2026-05-25 14:28:11] [INFO ] Flatten gal took : 5 ms
[2026-05-25 14:28:11] [INFO ] Applying decomposition
[2026-05-25 14:28:11] [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/graph11692894441288971897.txt' '-o' '/tmp/graph11692894441288971897.bin' '-w' '/tmp/graph11692894441288971897.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph11692894441288971897.bin' '-l' '-1' '-v' '-w' '/tmp/graph11692894441288971897.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:28:11] [INFO ] Decomposing Gal with order
[2026-05-25 14:28:11] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:28:11] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:28:11] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:28:11] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1323651751857651229.gal : 1 ms
[2026-05-25 14:28:11] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8694386641847803299.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/ReachabilityCardinality1323651751857651229.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8694386641847803299.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/ReachabilityCardinality8694386641847803299.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 144
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :144 after 468
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :468 after 1080
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :1080 after 23868
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :23868 after 4.49291e+06
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :4.49291e+06 after 7.4912e+13
SDD proceeding with computation,9 properties remain. new max is 512
SDD size :7.4912e+13 after 2.48318e+14
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30523 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[3, 1, 2, 2, 245, 3, 1, 2, 249] Max Struct:[+inf, +inf, +inf, +inf, 255, +inf, +inf, +inf, 255]
Starting property specific reduction for Murphy-PT-D4N050-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]
// Phase 1: matrix 35 rows 25 cols
[2026-05-25 14:28:12] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10007 steps (2 resets) in 8 ms. (1111 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:28:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:12] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:12] [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 14:28:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:12] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:28:12] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:12] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:28:12] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:12] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 7 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 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Graph (complete) has 70 edges and 25 vertex of which 3 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.0 ms
Discarding 22 places :
Also discarding 30 output transitions
Drop transitions (Output transitions of discarded places.) removed 30 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 10 ms. Remains 3 /25 variables (removed 22) and now considering 4/35 (removed 31) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:12] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:28:12] [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 28 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 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 61ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 61ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 71 ms. Remains : 3/25 places, 4/35 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 19 ms. (steps per millisecond=526 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:28:12] [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 233 ms. (4273 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 230 ms. (4329 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:28:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:12] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:28:12] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:12] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:12] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:12] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:12] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:28:12] [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 14:28:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:12] [INFO ] Implicit Places using invariants in 14 ms returned []
[2026-05-25 14:28:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:12] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:12] [INFO ] Implicit Places using invariants and state equation in 15 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 14:28:12] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:12] [INFO ] Invariant cache hit.
[2026-05-25 14:28:12] [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 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 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 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]
After SMT, in 58ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 58ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 91 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 :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:28:12] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:12] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:12] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3456777716114982696.gal : 0 ms
[2026-05-25 14:28:12] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9778665761766270764.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/ReachabilityCardinality3456777716114982696.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9778665761766270764.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality9778665761766270764.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,6,0.001985,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002225,4136,1,0,5,44,7,0,25,26,0
ITS tools runner thread asked to quit. Dying gracefully.
RANDOM walk for 40000 steps (8 resets) in 35 ms. (1111 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 22 ms. (1739 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 5 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 2 ms. (steps per millisecond=7 ) properties seen :0
FORMULA Murphy-PT-D4N050-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-D4N050-UpperBounds-00 in 874 ms.
Starting property specific reduction for Murphy-PT-D4N050-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 35 rows 25 cols
[2026-05-25 14:28:13] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 5 ms. (1666 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:28:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:13] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:13] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:13] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:13] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:13] [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 14:28:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:13] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:13] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:13] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:13] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 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 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Graph (complete) has 70 edges and 25 vertex of which 3 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.0 ms
Discarding 22 places :
Also discarding 30 output transitions
Drop transitions (Output transitions of discarded places.) removed 30 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 /25 variables (removed 22) and now considering 4/35 (removed 31) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:13] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:28:13] [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 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]
After SMT, in 62ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 62ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 63 ms. Remains : 3/25 places, 4/35 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 14:28:13] [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 236 ms. (4219 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 14:28:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:13] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:28:13] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:13] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:13] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:13] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:13] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:28:13] [INFO ] Added : 3 causal constraints over 2 iterations in 10 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 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 14:28:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:13] [INFO ] Implicit Places using invariants in 16 ms returned []
[2026-05-25 14:28:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:13] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:13] [INFO ] Implicit Places using invariants and state equation in 18 ms returned []
Implicit Place search using SMT with State Equation took 36 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:13] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:13] [INFO ] Invariant cache hit.
[2026-05-25 14:28:13] [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 48 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 84ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 84ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 127 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 8 ms. (steps per millisecond=1250 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:28:13] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:28:13] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:13] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality18427651262982363821.gal : 1 ms
[2026-05-25 14:28:13] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14970685971018699544.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/ReachabilityCardinality18427651262982363821.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14970685971018699544.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/ReachabilityCardinality14970685971018699544.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,6,0.002034,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002183,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40002 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 21 ms. (1818 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 4 ms. (steps per millisecond=3 ) 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-D4N050-UpperBounds-02 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-D4N050-UpperBounds-02 in 841 ms.
Starting property specific reduction for Murphy-PT-D4N050-UpperBounds-03
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 35 rows 25 cols
[2026-05-25 14:28:13] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10030 steps (2 resets) in 5 ms. (1671 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:13] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:13] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:13] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:13] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:13] [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 14:28:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:13] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:13] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:13] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:28:13] [INFO ] Added : 2 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 6 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 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Graph (complete) has 70 edges and 25 vertex of which 3 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.0 ms
Discarding 22 places :
Also discarding 30 output transitions
Drop transitions (Output transitions of discarded places.) removed 30 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 /25 variables (removed 22) and now considering 4/35 (removed 31) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:13] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:28:13] [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 28 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 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]
After SMT, in 62ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 62ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 63 ms. Remains : 3/25 places, 4/35 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 14:28:14] [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 229 ms. (4347 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 175 ms. (5681 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:14] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:14] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:14] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:14] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:14] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:14] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:28:14] [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 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 14:28:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:14] [INFO ] Implicit Places using invariants in 16 ms returned []
[2026-05-25 14:28:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:14] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:14] [INFO ] Implicit Places using invariants and state equation in 15 ms returned []
Implicit Place search using SMT with State Equation took 32 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:14] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:14] [INFO ] Invariant cache hit.
[2026-05-25 14:28:14] [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 26 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 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 62ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 62ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 97 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 14:28:14] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:14] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17518945677525529274.gal : 0 ms
[2026-05-25 14:28:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality259730966682870287.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/ReachabilityCardinality17518945677525529274.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality259730966682870287.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality259730966682870287.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,6,0.002137,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002293,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40002 steps (8 resets) in 28 ms. (1379 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 23 ms. (1666 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 1 ms. (steps per millisecond=14 ) 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-D4N050-UpperBounds-03 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-D4N050-UpperBounds-03 in 770 ms.
Starting property specific reduction for Murphy-PT-D4N050-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 35 rows 25 cols
[2026-05-25 14:28:14] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10023 steps (2 resets) in 5 ms. (1670 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:14] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:14] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:14] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:28:14] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:14] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:14] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:14] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 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 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Graph (complete) has 70 edges and 25 vertex of which 3 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.0 ms
Discarding 22 places :
Also discarding 30 output transitions
Drop transitions (Output transitions of discarded places.) removed 30 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 /25 variables (removed 22) and now considering 4/35 (removed 31) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:14] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:28:14] [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 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 69ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 70 ms. Remains : 3/25 places, 4/35 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 14:28:14] [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 222 ms. (4484 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:[2] Max Struct:[+inf]
[2026-05-25 14:28:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:15] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:15] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:15] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:15] [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 14:28:15] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:15] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:15] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:15] [INFO ] Added : 2 causal constraints over 1 iterations in 4 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 4 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 5 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 14:28:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:15] [INFO ] Implicit Places using invariants in 16 ms returned []
[2026-05-25 14:28:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:15] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:15] [INFO ] Implicit Places using invariants and state equation in 17 ms returned []
Implicit Place search using SMT with State Equation took 34 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:15] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:15] [INFO ] Invariant cache hit.
[2026-05-25 14:28:15] [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 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 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 115 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 14:28:15] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:15] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:15] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12450208660886354200.gal : 1 ms
[2026-05-25 14:28:15] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10959152501234459988.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/ReachabilityCardinality12450208660886354200.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10959152501234459988.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40001 steps (8 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
Loading property file /tmp/ReachabilityCardinality10959152501234459988.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,6,0.003183,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.003472,4136,1,0,5,44,7,0,25,26,0
BEST_FIRST walk for 40002 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 2 ms. (steps per millisecond=7 ) 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
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
FORMULA Murphy-PT-D4N050-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-D4N050-UpperBounds-04 in 823 ms.
Starting property specific reduction for Murphy-PT-D4N050-UpperBounds-05
Current structural bounds on expressions (Initially) : Max Seen:[50] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[50] Max Struct:[255]
Current structural bounds on expressions (Before main loop) : Max Seen:[50] Max Struct:[255]
// Phase 1: matrix 35 rows 25 cols
[2026-05-25 14:28:15] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[50] Max Struct:[255]
RANDOM walk for 10009 steps (2 resets) in 5 ms. (1668 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[99] Max Struct:[255]
[2026-05-25 14:28:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:15] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:15] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:15] [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 14:28:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:15] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:15] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:15] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:15] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:15] [INFO ] Added : 0 causal constraints over 0 iterations in 4 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[99] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[153] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:15] [INFO ] Invariant cache hit.
[2026-05-25 14:28:15] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 192 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 324 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 521ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 521ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 523 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:16] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[153] Max Struct:[255]
RANDOM walk for 1000000 steps (2 resets) in 396 ms. (2518 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 353 ms. (2824 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[159] Max Struct:[255]
[2026-05-25 14:28:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:16] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:16] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:28:16] [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 14:28:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:16] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:16] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:16] [INFO ] [Nat]Added 10 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:28:16] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:16] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 44 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[159] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[233] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:28:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:17] [INFO ] Implicit Places using invariants in 23 ms returned []
[2026-05-25 14:28:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:17] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:17] [INFO ] Implicit Places using invariants and state equation in 34 ms returned []
Implicit Place search using SMT with State Equation took 58 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:17] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:17] [INFO ] Invariant cache hit.
[2026-05-25 14:28:17] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 205 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 301 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 509ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 509ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 575 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:17] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[233] Max Struct:[255]
RANDOM walk for 1000050 steps (2 resets) in 394 ms. (2531 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 355 ms. (2808 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[233] Max Struct:[255]
[2026-05-25 14:28:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:18] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:18] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:18] [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 14:28:18] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:18] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:28:18] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:18] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:28:18] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:18] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 39 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[233] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[233] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:28:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:18] [INFO ] Implicit Places using invariants in 28 ms returned []
[2026-05-25 14:28:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:18] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:18] [INFO ] Implicit Places using invariants and state equation in 31 ms returned []
Implicit Place search using SMT with State Equation took 60 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:18] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:18] [INFO ] Invariant cache hit.
[2026-05-25 14:28:18] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 199 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 298 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 502ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 502ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 570 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:19] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:19] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5267201803529717811.gal : 0 ms
[2026-05-25 14:28:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality682807763350713382.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/ReachabilityCardinality5267201803529717811.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality682807763350713382.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...327
Loading property file /tmp/ReachabilityCardinality682807763350713382.prop.
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 6
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :6 after 36
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :36 after 90
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :90 after 192
RANDOM walk for 40092 steps (8 resets) in 51 ms. (771 steps per ms) remains 2/2 properties
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :192 after 30630
BEST_FIRST walk for 40004 steps (8 resets) in 33 ms. (1176 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 2/2 properties
SDD proceeding with computation,2 properties remain. new max is 128
SDD size :30630 after 243534
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :243534 after 1.78854e+09
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :1.78854e+09 after 1.89814e+13
Interrupted probabilistic random walk after 594709 steps, run timeout after 3001 ms. (steps per millisecond=198 ) properties seen :0 out of 2
Probabilistic random walk after 594709 steps, saw 411322 distinct states, run finished after 3001 ms. (steps per millisecond=198 ) properties seen :0
[2026-05-25 14:28:22] [INFO ] Invariant cache hit.
[2026-05-25 14:28:22] [INFO ] State equation strengthened by 10 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) 9/10 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 14:28:22] [INFO ] Deduced a trap composed of 5 places in 28 ms of which 2 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/10 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 15/25 variables, 10/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/35 variables, 5/17 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 5/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/35 variables, 0/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 25/60 variables, 15/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/60 variables, 0/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/60 variables, 0/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 37 constraints, problems are : Problem set: 1 solved, 1 unsolved in 79 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 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) 9/10 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/10 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 15/25 variables, 10/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/35 variables, 5/17 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 5/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/35 variables, 0/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 25/60 variables, 15/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/60 variables, 1/38 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/60 variables, 0/38 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/60 variables, 0/38 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 38 constraints, problems are : Problem set: 1 solved, 1 unsolved in 55 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 136ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 43 ms.
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:22] [INFO ] Invariant cache hit.
[2026-05-25 14:28:22] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 200 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 302 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 506ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 506ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 508 ms. Remains : 25/25 places, 35/35 transitions.
RANDOM walk for 40060 steps (8 resets) in 28 ms. (1381 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 21 ms. (1818 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2452522 steps, run timeout after 3001 ms. (steps per millisecond=817 ) properties seen :0 out of 1
Probabilistic random walk after 2452522 steps, saw 1709147 distinct states, run finished after 3001 ms. (steps per millisecond=817 ) properties seen :0
[2026-05-25 14:28:25] [INFO ] Invariant cache hit.
[2026-05-25 14:28:25] [INFO ] State equation strengthened by 10 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) 9/10 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 15/25 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/25 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/35 variables, 5/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/35 variables, 5/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 25/60 variables, 15/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 1 unsolved in 41 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 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) 9/10 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 14:28:25] [INFO ] Deduced a trap composed of 5 places in 33 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/10 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 15/25 variables, 10/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/35 variables, 5/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 5/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/35 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 25/60 variables, 15/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/60 variables, 1/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/60 variables, 0/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/60 variables, 0/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 38 constraints, problems are : Problem set: 0 solved, 1 unsolved in 93 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 139ms problems are : Problem set: 0 solved, 1 unsolved
Finished Parikh walk after 2195 steps, including 12 resets, run visited all 1 properties in 4 ms. (steps per millisecond=548 )
Parikh walk visited 1 properties in 9 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[233] Max Struct:[255]
Ending property specific reduction for Murphy-PT-D4N050-UpperBounds-05 in 10561 ms.
Starting property specific reduction for Murphy-PT-D4N050-UpperBounds-06
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 14:28:26] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 7 ms. (1250 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:28:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:26] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:26] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:26] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:26] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:26] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:26] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:26] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:26] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:26] [INFO ] Added : 3 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 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 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Graph (complete) has 70 edges and 25 vertex of which 3 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.0 ms
Discarding 22 places :
Also discarding 30 output transitions
Drop transitions (Output transitions of discarded places.) removed 30 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 2 ms. Remains 3 /25 variables (removed 22) and now considering 4/35 (removed 31) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:26] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:28:26] [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 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 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 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]
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 67 ms. Remains : 3/25 places, 4/35 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 14:28:26] [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 261 ms. (3816 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 207 ms. (4807 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:28:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:26] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:28:26] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:26] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:26] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:26] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:26] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:26] [INFO ] Added : 3 causal constraints over 1 iterations in 3 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 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 14:28:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:26] [INFO ] Implicit Places using invariants in 17 ms returned []
[2026-05-25 14:28:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:26] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:26] [INFO ] Implicit Places using invariants and state equation in 19 ms returned []
Implicit Place search using SMT with State Equation took 37 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:26] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:26] [INFO ] Invariant cache hit.
[2026-05-25 14:28:26] [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 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 115 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 :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:28:26] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:26] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:26] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2596542833775249935.gal : 1 ms
[2026-05-25 14:28:26] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality558823140109607576.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/ReachabilityCardinality2596542833775249935.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality558823140109607576.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...327
Loading property file /tmp/ReachabilityCardinality558823140109607576.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,6,0.002604,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002902,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40001 steps (8 resets) in 135 ms. (294 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 71 ms. (555 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 2 ms. (steps per millisecond=7 ) 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-D4N050-UpperBounds-06 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-D4N050-UpperBounds-06 in 942 ms.
Starting property specific reduction for Murphy-PT-D4N050-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 35 rows 25 cols
[2026-05-25 14:28:26] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 5 ms. (1666 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:28:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:26] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:27] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:27] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:27] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:27] [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 14:28:27] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:27] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:27] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:28:27] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:27] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 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 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Graph (complete) has 70 edges and 25 vertex of which 3 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.0 ms
Discarding 22 places :
Also discarding 30 output transitions
Drop transitions (Output transitions of discarded places.) removed 30 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 /25 variables (removed 22) and now considering 4/35 (removed 31) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:27] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:28:27] [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 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 68ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 68ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 68 ms. Remains : 3/25 places, 4/35 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 14:28:27] [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 14:28:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:27] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:28:27] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:27] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:27] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:27] [INFO ] [Nat]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:28:27] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:27] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:27] [INFO ] Added : 3 causal constraints over 2 iterations in 4 ms. Result :sat
Minimization took 1 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 14:28:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:27] [INFO ] Implicit Places using invariants in 15 ms returned []
[2026-05-25 14:28:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:27] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:27] [INFO ] Implicit Places using invariants and state equation in 18 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 14:28:27] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:27] [INFO ] Invariant cache hit.
[2026-05-25 14:28:27] [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 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]
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 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 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 14:28:27] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:27] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:28:27] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality276758263144263798.gal : 0 ms
[2026-05-25 14:28:27] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18001746201126269147.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/ReachabilityCardinality276758263144263798.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18001746201126269147.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40001 steps (8 resets) in 26 ms. (1481 steps per ms) remains 1/1 properties

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality18001746201126269147.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,6,0.00214,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002403,4136,1,0,5,44,7,0,25,26,0
BEST_FIRST walk for 40004 steps (8 resets) in 16 ms. (2353 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-D4N050-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-D4N050-UpperBounds-08 in 816 ms.
Starting property specific reduction for Murphy-PT-D4N050-UpperBounds-10
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 35 rows 25 cols
[2026-05-25 14:28:27] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10049 steps (2 resets) in 5 ms. (1674 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 14:28:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:27] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:27] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:28:27] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:27] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:27] [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 14:28:27] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:27] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:27] [INFO ] [Nat]Added 10 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:28:27] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:27] [INFO ] Added : 2 causal constraints over 1 iterations in 6 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 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Graph (complete) has 70 edges and 25 vertex of which 3 are kept as prefixes of interest. Removing 22 places using SCC suffix rule.1 ms
Discarding 22 places :
Also discarding 30 output transitions
Drop transitions (Output transitions of discarded places.) removed 30 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 /25 variables (removed 22) and now considering 4/35 (removed 31) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:27] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:28:27] [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 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 58ms 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 60 ms. Remains : 3/25 places, 4/35 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 3 ms. (steps per millisecond=3333 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:27] [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 176 ms. (5649 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:28] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:28:28] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:28] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:28] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:28] [INFO ] [Nat]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:28:28] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:28:28] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:28:28] [INFO ] Added : 2 causal constraints over 1 iterations in 2 ms. Result :sat
Minimization took 1 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 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 14:28:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:28] [INFO ] Implicit Places using invariants in 21 ms returned []
[2026-05-25 14:28:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:28] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:28] [INFO ] Implicit Places using invariants and state equation in 24 ms returned []
Implicit Place search using SMT with State Equation took 45 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:28] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:28] [INFO ] Invariant cache hit.
[2026-05-25 14:28:28] [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 25 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 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 64ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 64ms
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 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 14:28:28] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:28] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15325589108833484827.gal : 0 ms
[2026-05-25 14:28:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8323954377216654175.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/ReachabilityCardinality15325589108833484827.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8323954377216654175.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/ReachabilityCardinality8323954377216654175.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,6,0.002022,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.00227,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 59 ms. (666 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 16 ms. (2353 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 4 ms. (steps per millisecond=3 ) 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-D4N050-UpperBounds-10 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-D4N050-UpperBounds-10 in 791 ms.
Starting property specific reduction for Murphy-PT-D4N050-UpperBounds-14
Current structural bounds on expressions (Initially) : Max Seen:[50] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[50] Max Struct:[255]
Current structural bounds on expressions (Before main loop) : Max Seen:[50] Max Struct:[255]
// Phase 1: matrix 35 rows 25 cols
[2026-05-25 14:28:28] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[50] Max Struct:[255]
RANDOM walk for 10005 steps (2 resets) in 7 ms. (1250 steps per ms)
BEST_FIRST walk for 10000 steps (2 resets) in 5 ms. (1666 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[96] Max Struct:[255]
[2026-05-25 14:28:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:28] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:28] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:28:28] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:28] [INFO ] [Real]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:28] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:28] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:28] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:28] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:28] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:28] [INFO ] Added : 0 causal constraints over 0 iterations in 4 ms. Result :sat
Minimization took 35 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[96] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[148] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:28] [INFO ] Invariant cache hit.
[2026-05-25 14:28:28] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 184 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 310 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 498ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 498ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 499 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:29] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[148] Max Struct:[255]
RANDOM walk for 1000000 steps (2 resets) in 386 ms. (2583 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 352 ms. (2832 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[148] Max Struct:[255]
[2026-05-25 14:28:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:29] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:30] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:28:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:30] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:30] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:30] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:30] [INFO ] [Nat]Added 10 Read/Feed constraints in 3 ms returned sat
[2026-05-25 14:28:30] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:30] [INFO ] Added : 0 causal constraints over 0 iterations in 7 ms. Result :sat
Minimization took 45 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[148] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[149] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 2 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:28:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:30] [INFO ] Implicit Places using invariants in 25 ms returned []
[2026-05-25 14:28:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:30] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:30] [INFO ] Implicit Places using invariants and state equation in 28 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 14:28:30] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:30] [INFO ] Invariant cache hit.
[2026-05-25 14:28:30] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 210 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 311 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 538ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 538ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 604 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:30] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[149] Max Struct:[255]
RANDOM walk for 1000016 steps (2 resets) in 388 ms. (2570 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 352 ms. (2832 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[149] Max Struct:[255]
[2026-05-25 14:28:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:31] [INFO ] [Real]Absence check using 1 positive place invariants in 3 ms returned sat
[2026-05-25 14:28:31] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:28:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:31] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:31] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:28:31] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:31] [INFO ] [Nat]Added 10 Read/Feed constraints in 5 ms returned sat
[2026-05-25 14:28:31] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:31] [INFO ] Added : 0 causal constraints over 0 iterations in 5 ms. Result :sat
Minimization took 36 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[149] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[153] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:28:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:31] [INFO ] Implicit Places using invariants in 24 ms returned []
[2026-05-25 14:28:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:31] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:31] [INFO ] Implicit Places using invariants and state equation in 27 ms returned []
Implicit Place search using SMT with State Equation took 52 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:31] [INFO ] Redundant transitions in 1 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:31] [INFO ] Invariant cache hit.
[2026-05-25 14:28:31] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 209 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 294 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 522ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 522ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 581 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:32] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[153] Max Struct:[255]
RANDOM walk for 1000017 steps (2 resets) in 386 ms. (2584 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 351 ms. (2840 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[153] Max Struct:[255]
[2026-05-25 14:28:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:32] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:33] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:33] [INFO ] [Nat]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:28:33] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:33] [INFO ] [Nat]Added 10 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:33] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:33] [INFO ] Added : 3 causal constraints over 1 iterations in 12 ms. Result :sat
Minimization took 59 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[153] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[249] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:28:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:33] [INFO ] Implicit Places using invariants in 24 ms returned []
[2026-05-25 14:28:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:33] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:33] [INFO ] Implicit Places using invariants and state equation in 31 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 14:28:33] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:33] [INFO ] Invariant cache hit.
[2026-05-25 14:28:33] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 184 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 311 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 509ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 509ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 570 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:33] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[249] Max Struct:[255]
RANDOM walk for 1000031 steps (2 resets) in 388 ms. (2570 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 353 ms. (2824 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[249] Max Struct:[255]
[2026-05-25 14:28:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:34] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:34] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:34] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:34] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:28:34] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:34] [INFO ] [Nat]Added 10 Read/Feed constraints in 5 ms returned sat
[2026-05-25 14:28:34] [INFO ] Computed and/alt/rep : 20/50/20 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:28:34] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[249] Max Struct:[255]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[249] Max Struct:[255]
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:28:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:34] [INFO ] Implicit Places using invariants in 21 ms returned []
[2026-05-25 14:28:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:34] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:34] [INFO ] Implicit Places using invariants and state equation in 37 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 14:28:34] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:34] [INFO ] Invariant cache hit.
[2026-05-25 14:28:34] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 178 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 319 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 512ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 513ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 576 ms. Remains : 25/25 places, 35/35 transitions.
[2026-05-25 14:28:35] [INFO ] Flatten gal took : 5 ms
[2026-05-25 14:28:35] [INFO ] Flatten gal took : 9 ms
[2026-05-25 14:28:35] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality18379702004381532181.gal : 1 ms
[2026-05-25 14:28:35] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13283837950095150693.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/ReachabilityCardinality18379702004381532181.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13283837950095150693.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
RANDOM walk for 40126 steps (8 resets) in 60 ms. (657 steps per ms) remains 2/2 properties
Loading property file /tmp/ReachabilityCardinality13283837950095150693.prop.
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 6
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :6 after 36
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :36 after 90
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :90 after 192
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :192 after 30630
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40003 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 :30630 after 243534
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :243534 after 1.78854e+09
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :1.78854e+09 after 1.89814e+13
Interrupted probabilistic random walk after 1130227 steps, run timeout after 3001 ms. (steps per millisecond=376 ) properties seen :0 out of 2
Probabilistic random walk after 1130227 steps, saw 787842 distinct states, run finished after 3001 ms. (steps per millisecond=376 ) properties seen :0
[2026-05-25 14:28:38] [INFO ] Invariant cache hit.
[2026-05-25 14:28:38] [INFO ] State equation strengthened by 10 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) 9/10 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 14:28:38] [INFO ] Deduced a trap composed of 5 places in 25 ms of which 2 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/10 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 15/25 variables, 10/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/35 variables, 5/17 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 5/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/35 variables, 0/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 25/60 variables, 15/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/60 variables, 0/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/60 variables, 0/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 37 constraints, problems are : Problem set: 1 solved, 1 unsolved in 78 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 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) 9/10 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/10 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 15/25 variables, 10/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/35 variables, 5/17 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 5/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/35 variables, 0/22 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 25/60 variables, 15/37 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/60 variables, 1/38 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/60 variables, 0/38 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/60 variables, 0/38 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 38 constraints, problems are : Problem set: 1 solved, 1 unsolved in 80 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 160ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 40 ms.
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:38] [INFO ] Invariant cache hit.
[2026-05-25 14:28:38] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 242 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 359 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 609ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 609ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 610 ms. Remains : 25/25 places, 35/35 transitions.
RANDOM walk for 40017 steps (8 resets) in 43 ms. (909 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 20 ms. (1904 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2418864 steps, run timeout after 3001 ms. (steps per millisecond=806 ) properties seen :0 out of 1
Probabilistic random walk after 2418864 steps, saw 1685964 distinct states, run finished after 3001 ms. (steps per millisecond=806 ) properties seen :0
[2026-05-25 14:28:42] [INFO ] Invariant cache hit.
[2026-05-25 14:28:42] [INFO ] State equation strengthened by 10 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) 9/10 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 15/25 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/25 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/35 variables, 5/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/35 variables, 5/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 0/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 25/60 variables, 15/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 1 unsolved in 49 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 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) 9/10 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 14:28:42] [INFO ] Deduced a trap composed of 5 places in 24 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/10 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/10 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 15/25 variables, 10/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/35 variables, 5/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/35 variables, 5/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/35 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 25/60 variables, 15/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/60 variables, 1/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/60 variables, 0/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/60 variables, 0/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 38 constraints, problems are : Problem set: 0 solved, 1 unsolved in 111 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 165ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 46 ms.
Support contains 1 out of 25 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 25/25 places, 35/35 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 25/25 places, 35/35 transitions.
Applied a total of 0 rules in 0 ms. Remains 25 /25 variables (removed 0) and now considering 35/35 (removed 0) transitions.
[2026-05-25 14:28:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:42] [INFO ] Implicit Places using invariants in 22 ms returned []
[2026-05-25 14:28:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:42] [INFO ] State equation strengthened by 10 read => feed constraints.
[2026-05-25 14:28:42] [INFO ] Implicit Places using invariants and state equation in 30 ms returned []
Implicit Place search using SMT with State Equation took 68 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:42] [INFO ] Redundant transitions in 0 ms returned []
Running 20 sub problems to find dead transitions.
[2026-05-25 14:28:42] [INFO ] Invariant cache hit.
[2026-05-25 14:28:42] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (OVERLAPS) 0/60 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Real declared 60/60 variables, and 36 constraints, problems are : Problem set: 0 solved, 20 unsolved in 211 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 20 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 1 (OVERLAPS) 5/20 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/20 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 3 (OVERLAPS) 35/55 variables, 20/21 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 10/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 6 (OVERLAPS) 5/60 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/60 variables, 20/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
At refinement iteration 9 (OVERLAPS) 0/60 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 20 unsolved
No progress, stopping.
After SMT solving in domain Int declared 60/60 variables, and 56 constraints, problems are : Problem set: 0 solved, 20 unsolved in 337 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 25/25 constraints, ReadFeed: 10/10 constraints, PredecessorRefiner: 20/20 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 551ms problems are : Problem set: 0 solved, 20 unsolved
Search for dead transitions found 0 dead transitions in 552ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 623 ms. Remains : 25/25 places, 35/35 transitions.
Attempting over-approximation, by ignoring read arcs.
Graph (complete) has 60 edges and 25 vertex of which 10 are kept as prefixes of interest. Removing 15 places using SCC suffix rule.0 ms
Discarding 15 places :
Also discarding 20 output transitions
Drop transitions (Output transitions of discarded places.) removed 20 transitions
Applied a total of 1 rules in 8 ms. Remains 10 /25 variables (removed 15) and now considering 15/35 (removed 20) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 15 rows 10 cols
[2026-05-25 14:28:42] [INFO ] Computed 1 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:28:42] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:42] [INFO ] After 28ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:28:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:42] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 14:28:42] [INFO ] State equation strengthened by 5 read => feed constraints.
[2026-05-25 14:28:42] [INFO ] After 4ms SMT Verify possible using 5 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 14:28:42] [INFO ] After 9ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:28:43] [INFO ] After 57ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:28:43] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:43] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8532663698452879888.gal : 1 ms
[2026-05-25 14:28:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15581924892126915491.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/ReachabilityCardinality8532663698452879888.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15581924892126915491.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/ReachabilityCardinality15581924892126915491.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 9957
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :9957 after 46231
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :46231 after 6.44381e+07
Detected timeout of ITS tools.
[2026-05-25 14:28:58] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:58] [INFO ] Applying decomposition
[2026-05-25 14:28:58] [INFO ] Flatten gal took : 1 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph12055235217047989854.txt' '-o' '/tmp/graph12055235217047989854.bin' '-w' '/tmp/graph12055235217047989854.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12055235217047989854.bin' '-l' '-1' '-v' '-w' '/tmp/graph12055235217047989854.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:28:58] [INFO ] Decomposing Gal with order
[2026-05-25 14:28:58] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:28:58] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:58] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:28:58] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17096395888374742392.gal : 0 ms
[2026-05-25 14:28:58] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9187449478681261868.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/ReachabilityCardinality17096395888374742392.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9187449478681261868.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/ReachabilityCardinality9187449478681261868.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 969
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :969 after 374408
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :374408 after 1.52454e+10
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.66122e+13 after 1.66127e+13
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.66127e+13 after 1.66152e+13
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.66152e+13 after 1.66484e+13
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.66484e+13 after 1.66484e+13
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :1.66484e+13 after 1.66484e+13
SDD proceeding with computation,1 properties remain. new max is 16384
SDD size :1.66484e+13 after 1.66484e+13
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30241 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-25 14:29:13] [INFO ] Flatten gal took : 7 ms
[2026-05-25 14:29:13] [INFO ] Applying decomposition
[2026-05-25 14:29:13] [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/graph10742394155993918789.txt' '-o' '/tmp/graph10742394155993918789.bin' '-w' '/tmp/graph10742394155993918789.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10742394155993918789.bin' '-l' '-1' '-v' '-w' '/tmp/graph10742394155993918789.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:29:13] [INFO ] Decomposing Gal with order
[2026-05-25 14:29:13] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:29:13] [INFO ] Flatten gal took : 6 ms
[2026-05-25 14:29:13] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:29:13] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9187041421954260867.gal : 1 ms
[2026-05-25 14:29:13] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7814293946396637276.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/ReachabilityCardinality9187041421954260867.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7814293946396637276.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/ReachabilityCardinality7814293946396637276.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 144
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :144 after 468
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :468 after 1080
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1080 after 23868
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :23868 after 4.49291e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :4.49291e+06 after 2.10068e+13
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :2.10068e+13 after 3.68623e+15
Detected timeout of ITS tools.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[249] Max Struct:[255]
Ending property specific reduction for Murphy-PT-D4N050-UpperBounds-14 in 94674 ms.
[2026-05-25 14:30:03] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:30:03] [INFO ] Applying decomposition
[2026-05-25 14:30:03] [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/graph7136613588011891223.txt' '-o' '/tmp/graph7136613588011891223.bin' '-w' '/tmp/graph7136613588011891223.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph7136613588011891223.bin' '-l' '-1' '-v' '-w' '/tmp/graph7136613588011891223.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:30:03] [INFO ] Decomposing Gal with order
[2026-05-25 14:30:03] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:30:03] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:30:03] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 1 ms.
[2026-05-25 14:30:03] [INFO ] Time to serialize gal into /tmp/UpperBounds17591165856411311958.gal : 0 ms
[2026-05-25 14:30:03] [INFO ] Time to serialize properties into /tmp/UpperBounds8713176467067213470.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/UpperBounds17591165856411311958.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds8713176467067213470.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...284
Loading property file /tmp/UpperBounds8713176467067213470.prop.
Detected timeout of ITS tools.
[2026-05-25 14:51:30] [INFO ] Flatten gal took : 4 ms
[2026-05-25 14:51:30] [INFO ] Time to serialize gal into /tmp/UpperBounds12276197749478002898.gal : 1 ms
[2026-05-25 14:51:30] [INFO ] Time to serialize properties into /tmp/UpperBounds3846638238749275834.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/UpperBounds12276197749478002898.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds3846638238749275834.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...305
Loading property file /tmp/UpperBounds3846638238749275834.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,7.25875e+18,250.002,2972928,2,10568,5,1.02079e+07,6,0,173,1.09767e+07,0
Total reachable state count : 7258754799509878656

Verifying 2 reachability properties.
Min sum of variable value : 0
Maximum sum along a path : 249
Bounds property Murphy-PT-D4N050-UpperBounds-05 :0 <= p1_2 <= 249
FORMULA Murphy-PT-D4N050-UpperBounds-05 249 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-D4N050-UpperBounds-05,0,250.332,2972928,1,0,7,1.02079e+07,9,1,489,1.09767e+07,4
Min sum of variable value : 0
Maximum sum along a path : 249
Bounds property Murphy-PT-D4N050-UpperBounds-14 :0 <= p1_4 <= 249
FORMULA Murphy-PT-D4N050-UpperBounds-14 249 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-D4N050-UpperBounds-14,0,250.409,2972928,1,0,8,1.02079e+07,10,1,758,1.09767e+07,5
Total runtime 1801431 ms.

BK_STOP 1779720941551

--------------------
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//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
++ perl -pe 's/.*\.//g'
+ 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-D4N050"
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-D4N050, 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-177969919700013"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Murphy-PT-D4N050.tgz
mv Murphy-PT-D4N050 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 ;