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-177969919700011.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-D3N050, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r207-tall-177969919700011
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 448K
-rw-r--r-- 1 mcc users 7.3K Mar 8 14:25 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Mar 8 14:25 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K Mar 8 14:25 CTLFireability.txt
-rw-r--r-- 1 mcc users 58K Mar 8 14:25 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Mar 17 09:04 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 17 09:04 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Mar 17 09:05 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 17 09:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.7K Mar 8 14:25 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 87K Mar 8 14:25 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.0K Mar 8 14:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 83K Mar 8 14:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 17 09:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 17 09:05 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 7 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 15K 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-D3N050-UpperBounds-00
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-01
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-02
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-03
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-04
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-05
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-06
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-07
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-08
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-09
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-10
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-11
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-12
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-13
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-14
FORMULA_NAME Murphy-PT-D3N050-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779719136670

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Murphy-PT-D3N050
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 14:25:38] [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 14:25:38] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 14:25:38] [INFO ] Load time of PNML (sax parser for PT used): 38 ms
[2026-05-25 14:25:38] [INFO ] Transformed 24 places.
[2026-05-25 14:25:38] [INFO ] Transformed 28 transitions.
[2026-05-25 14:25:38] [INFO ] Parsed PT model containing 24 places and 28 transitions and 108 arcs in 122 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Current structural bounds on expressions (Initially) : Max Seen:[1, 3, 50, 1, 1, 0, 50, 0, 0, 3, 3, 3, 0, 0, 50, 50] 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:[1, 3, 50, 1, 1, 0, 50, 0, 0, 3, 3, 3, 0, 0, 50, 50] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
// Phase 1: matrix 28 rows 24 cols
[2026-05-25 14:25:38] [INFO ] Computed 5 invariants in 7 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1, 3, 50, 1, 1, 0, 50, 0, 0, 3, 3, 3, 0, 0, 50, 50] Max Struct:[204, +inf, 204, 204, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
RANDOM walk for 10042 steps (2 resets) in 19 ms. (502 steps per ms)
BEST_FIRST walk for 160016 steps (32 resets) in 149 ms. (1066 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[75, 3, 103, 95, 101, 2, 61, 2, 1, 3, 3, 3, 2, 1, 99, 85] Max Struct:[204, +inf, 204, 204, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:25:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using 2 positive place invariants in 4 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 4 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2026-05-25 14:25:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:25:38] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:25:38] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:38] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 5 ms.
[2026-05-25 14:25:38] [INFO ] Added : 0 causal constraints over 0 iterations in 17 ms. Result :sat
Minimization took 37 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:25:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:38] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 6 ms.
[2026-05-25 14:25:38] [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 14:25:38] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Absence check using state equation in 17 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:38] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:38] [INFO ] Added : 0 causal constraints over 0 iterations in 26 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:38] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 5 ms.
[2026-05-25 14:25:39] [INFO ] Added : 0 causal constraints over 0 iterations in 10 ms. Result :sat
Minimization took 26 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 3 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:39] [INFO ] Added : 0 causal constraints over 0 iterations in 6 ms. Result :sat
Minimization took 23 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 18 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:39] [INFO ] Added : 2 causal constraints over 1 iterations in 12 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:25:39] [INFO ] Added : 0 causal constraints over 0 iterations in 7 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:39] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:39] [INFO ] Added : 1 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 9 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:25:39] [INFO ] Added : 3 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 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:39] [INFO ] Added : 3 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 14 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:39] [INFO ] Added : 3 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 14:25:39] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:39] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 2 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 ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:40] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:25:40] [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 3 generalized place invariants in 4 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using state equation in 16 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 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:40] [INFO ] Added : 1 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 14:25:40] [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 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using state equation in 8 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 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:40] [INFO ] Added : 0 causal constraints over 0 iterations in 6 ms. Result :sat
Minimization took 33 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 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Real]Absence check using state equation in 8 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 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:40] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:40] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:40] [INFO ] Added : 0 causal constraints over 0 iterations in 7 ms. Result :sat
Minimization took 37 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[75, 3, 103, 95, 101, 2, 61, 2, 1, 3, 3, 3, 2, 1, 99, 85] Max Struct:[204, +inf, 204, 204, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[201, 3, 199, 201, 197, 2, 197, 2, 1, 3, 3, 3, 2, 1, 126, 179] Max Struct:[204, +inf, 204, 204, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Support contains 16 out of 24 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 24/24 places, 28/28 transitions.
Applied a total of 0 rules in 8 ms. Remains 24 /24 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:25:40] [INFO ] Invariant cache hit.
[2026-05-25 14:25:40] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/16 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (OVERLAPS) 4/20 variables, 2/5 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/20 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (OVERLAPS) 28/48 variables, 20/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/48 variables, 8/33 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/48 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (OVERLAPS) 4/52 variables, 4/37 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/52 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 0/52 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 52/52 variables, and 37 constraints, problems are : Problem set: 0 solved, 16 unsolved in 335 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 24/24 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/16 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (OVERLAPS) 4/20 variables, 2/5 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/20 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (OVERLAPS) 28/48 variables, 20/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/48 variables, 8/33 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/48 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (OVERLAPS) 4/52 variables, 4/37 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/52 variables, 16/53 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/52 variables, 0/53 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 10 (OVERLAPS) 0/52 variables, 0/53 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 52/52 variables, and 53 constraints, problems are : Problem set: 0 solved, 16 unsolved in 310 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 24/24 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 689ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 699ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 716 ms. Remains : 24/24 places, 28/28 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {13=1, 17=1, 25=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 2 ms.
This minimized invariant on transitions {13=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 48 ms. (steps per millisecond=208 ) properties (out of 16) seen :[78, 3, 52, 91, 87, 2, 57, 2, 1, 3, 3, 3, 2, 1, 55, 54]
Current structural bounds on expressions (after cover walk) : Max Seen:[201, 3, 199, 201, 197, 2, 197, 2, 1, 3, 3, 3, 2, 1, 126, 179] Max Struct:[204, +inf, 204, 204, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:25:41] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[201, 3, 199, 201, 197, 2, 197, 2, 1, 3, 3, 3, 2, 1, 126, 179] Max Struct:[204, +inf, 204, 204, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
RANDOM walk for 1000004 steps (2 resets) in 531 ms. (1879 steps per ms)
BEST_FIRST walk for 16000015 steps (32 resets) in 6828 ms. (2342 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[201, 3, 199, 201, 201, 2, 197, 2, 1, 3, 3, 3, 2, 1, 126, 179] Max Struct:[204, +inf, 204, 204, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:25:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 3 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:48] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:48] [INFO ] [Nat]Absence check using state equation in 12 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:25:49] [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 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:49] [INFO ] Added : 6 causal constraints over 2 iterations in 33 ms. Result :sat
Minimization took 19 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 7 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 10 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 3 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:49] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 3 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:49] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 12 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 3 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:49] [INFO ] Added : 2 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 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:49] [INFO ] Added : 1 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:49] [INFO ] Added : 3 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 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 3 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:49] [INFO ] Added : 3 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 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:49] [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 14:25:49] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:49] [INFO ] [Real]Absence check using state equation in 14 ms returned sat
[2026-05-25 14:25:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:50] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:50] [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 14:25:50] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:50] [INFO ] Added : 2 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:50] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:50] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:50] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 17 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[201, 3, 199, 201, 201, 2, 197, 2, 1, 3, 3, 3, 2, 1, 126, 179] Max Struct:[201, +inf, 204, 201, 201, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
FORMULA Murphy-PT-D3N050-UpperBounds-04 201 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D3N050-UpperBounds-03 201 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Murphy-PT-D3N050-UpperBounds-00 201 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Support contains 13 out of 24 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 24/24 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 24 /24 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 24/24 places, 28/28 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {13=1, 17=1, 25=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {13=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 13) seen :[3, 54, 2, 53, 2, 1, 3, 3, 3, 2, 1, 54, 53]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:25:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
RANDOM walk for 1000034 steps (2 resets) in 456 ms. (2188 steps per ms)
BEST_FIRST walk for 13000012 steps (26 resets) in 5617 ms. (2313 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:25:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:56] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:25:56] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 15 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:56] [INFO ] Added : 6 causal constraints over 2 iterations in 33 ms. Result :sat
Minimization took 19 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:56] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:56] [INFO ] [Nat]Added 8 Read/Feed constraints in 9 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:25:57] [INFO ] Added : 2 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 12 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 2 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 5 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:57] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 3 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:57] [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 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:57] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:57] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:57] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:57] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:57] [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 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 8 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:25:57] [INFO ] Added : 2 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 22 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 2 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:25:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using 2 positive and 3 generalized place invariants in 0 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:25:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:25:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:25:57] [INFO ] Added : 1 causal constraints over 1 iterations in 8 ms. Result :sat
Minimization took 30 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Support contains 13 out of 24 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 24/24 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 24 /24 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 24/24 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 24/24 places, 28/28 transitions.
Applied a total of 0 rules in 4 ms. Remains 24 /24 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:25:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:25:58] [INFO ] Implicit Places using invariants in 34 ms returned [8, 9, 10, 11]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 38 ms to find 4 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 20/24 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 43 ms. Remains : 20/24 places, 28/28 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {14=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {13=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 13) seen :[3, 53, 2, 52, 2, 1, 3, 3, 3, 2, 1, 55, 50]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
// Phase 1: matrix 28 rows 20 cols
[2026-05-25 14:25:58] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
RANDOM walk for 1000028 steps (2 resets) in 423 ms. (2358 steps per ms)
BEST_FIRST walk for 13000012 steps (26 resets) in 4759 ms. (2731 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:26:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:03] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:03] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 7 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:03] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 18 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:03] [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 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:03] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 16 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:03] [INFO ] Added : 2 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 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 16 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 6 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:03] [INFO ] Added : 1 causal constraints over 1 iterations in 13 ms. Result :sat
Minimization took 6 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:03] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2026-05-25 14:26:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:03] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:03] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:03] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:04] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:04] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:04] [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 14:26:04] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:26:04] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:04] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:04] [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 14:26:04] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:26:04] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:04] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:04] [INFO ] Added : 3 causal constraints over 2 iterations in 7 ms. Result :sat
Minimization took 19 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:04] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Added 8 Read/Feed constraints in 6 ms returned sat
[2026-05-25 14:26:04] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:04] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:04] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:04] [INFO ] [Nat]Added 8 Read/Feed constraints in 7 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:04] [INFO ] Deduced a trap composed of 4 places in 37 ms of which 3 ms to minimize.
[2026-05-25 14:26:04] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 68 ms
[2026-05-25 14:26:04] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:26:04] [INFO ] Added : 5 causal constraints over 1 iterations in 9 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 185] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Support contains 13 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 3 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 0 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:26:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:04] [INFO ] Implicit Places using invariants in 24 ms returned []
[2026-05-25 14:26:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:04] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:26:04] [INFO ] Implicit Places using invariants and state equation in 26 ms returned []
Implicit Place search using SMT with State Equation took 61 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:26:04] [INFO ] Redundant transitions in 1 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:26:04] [INFO ] Invariant cache hit.
[2026-05-25 14:26:04] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 194 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 385 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 595ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 596ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 664 ms. Remains : 20/20 places, 28/28 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {14=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {13=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 13) seen :[3, 67, 2, 51, 2, 1, 3, 3, 3, 2, 1, 56, 54]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:26:05] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
RANDOM walk for 1000006 steps (2 resets) in 403 ms. (2475 steps per ms)
BEST_FIRST walk for 13000010 steps (26 resets) in 4772 ms. (2723 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
[2026-05-25 14:26:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:10] [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 14:26:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:26:10] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:26:10] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:10] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:10] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:10] [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 14:26:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Nat]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Nat]Added 8 Read/Feed constraints in 7 ms returned sat
[2026-05-25 14:26:10] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:10] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 18 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:10] [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 14:26:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:10] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:10] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:10] [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 14:26:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Nat]Added 8 Read/Feed constraints in 5 ms returned sat
[2026-05-25 14:26:10] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:10] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 16 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:10] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:26:10] [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 14:26:11] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:11] [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 14:26:11] [INFO ] [Real]Absence check using 1 positive 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 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:11] [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 14:26:11] [INFO ] [Real]Absence check using 1 positive 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 1 positive place invariants in 1 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 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:11] [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 14:26:11] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using state equation in 7 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 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:11] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using 1 positive place invariants in 1 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 1 positive place invariants in 1 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 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:11] [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 14:26:11] [INFO ] [Real]Absence check using 1 positive place invariants in 1 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 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:26:11] [INFO ] Added : 2 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 14:26:11] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using state equation in 6 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 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:11] [INFO ] Added : 3 causal constraints over 2 iterations in 7 ms. Result :sat
Minimization took 7 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:26:11] [INFO ] [Real]Absence check using 1 positive place invariants in 1 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 1 positive place invariants in 1 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 8 Read/Feed constraints in 6 ms returned sat
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:26:11] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 30 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 1 positive place invariants in 1 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 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:26:11] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:11] [INFO ] Deduced a trap composed of 4 places in 32 ms of which 2 ms to minimize.
[2026-05-25 14:26:11] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 37 ms
[2026-05-25 14:26:11] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 5 ms.
[2026-05-25 14:26:11] [INFO ] Added : 5 causal constraints over 1 iterations in 11 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Support contains 13 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:26:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:11] [INFO ] Implicit Places using invariants in 23 ms returned []
[2026-05-25 14:26:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:11] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:26:11] [INFO ] Implicit Places using invariants and state equation in 36 ms returned []
Implicit Place search using SMT with State Equation took 61 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:26:11] [INFO ] Redundant transitions in 0 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:26:11] [INFO ] Invariant cache hit.
[2026-05-25 14:26:11] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 154 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 254 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 419ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 419ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 485 ms. Remains : 20/20 places, 28/28 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {14=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {13=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 13) seen :[3, 51, 2, 54, 2, 1, 3, 3, 3, 2, 1, 59, 60]
Current structural bounds on expressions (after cover walk) : Max Seen:[3, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
RANDOM walk for 40110 steps (8 resets) in 462 ms. (86 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 39 ms. (100 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 22 ms. (174 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 14 ms. (266 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 20 ms. (190 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 10 ms. (363 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 10 ms. (363 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 12 ms. (307 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 25 ms. (154 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4002 steps (8 resets) in 11 ms. (333 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 9 ms. (400 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 10 ms. (363 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 13 ms. (285 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 10 ms. (364 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 17/17 properties
BEST_FIRST walk for 4003 steps (8 resets) in 14 ms. (266 steps per ms) remains 17/17 properties
[2026-05-25 14:26:12] [INFO ] Flatten gal took : 45 ms
[2026-05-25 14:26:12] [INFO ] Flatten gal took : 4 ms
[2026-05-25 14:26:12] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7309608192198998779.gal : 4 ms
[2026-05-25 14:26:12] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9636974132605183263.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/ReachabilityCardinality7309608192198998779.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9636974132605183263.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/ReachabilityCardinality9636974132605183263.prop.
SDD proceeding with computation,17 properties remain. new max is 4
SDD size :1 after 6
SDD proceeding with computation,17 properties remain. new max is 8
SDD size :6 after 36
SDD proceeding with computation,17 properties remain. new max is 16
SDD size :36 after 90
SDD proceeding with computation,17 properties remain. new max is 32
SDD size :90 after 192
SDD proceeding with computation,17 properties remain. new max is 64
SDD size :192 after 30630
SDD proceeding with computation,17 properties remain. new max is 128
SDD size :30630 after 243534
SDD proceeding with computation,17 properties remain. new max is 256
SDD size :243534 after 1.78854e+09
SDD proceeding with computation,17 properties remain. new max is 512
SDD size :1.78854e+09 after 5.66311e+10
SDD proceeding with computation,17 properties remain. new max is 1024
SDD size :5.66311e+10 after 1.14813e+11
Interrupted probabilistic random walk after 185309 steps, run timeout after 3001 ms. (steps per millisecond=61 ) properties seen :0 out of 17
Probabilistic random walk after 185309 steps, saw 125232 distinct states, run finished after 3005 ms. (steps per millisecond=61 ) properties seen :0
[2026-05-25 14:26:15] [INFO ] Invariant cache hit.
[2026-05-25 14:26:15] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 17 unsolved
At refinement iteration 1 (OVERLAPS) 4/17 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 17 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:16] [INFO ] Deduced a trap composed of 4 places in 240 ms of which 22 ms to minimize.
Problem MAX1 is UNSAT
Problem MAX3 is UNSAT
Problem MAX11 is UNSAT
Problem MAX12 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 1/2 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 4 (OVERLAPS) 28/45 variables, 17/19 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/45 variables, 8/27 constraints. Problems are: Problem set: 4 solved, 13 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/45 variables, 0/27 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 7 (OVERLAPS) 3/48 variables, 3/30 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/30 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/30 constraints. Problems are: Problem set: 4 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 30 constraints, problems are : Problem set: 4 solved, 13 unsolved in 511 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 17/17 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 4 solved, 13 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 1 (OVERLAPS) 4/17 variables, 1/1 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 1/2 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 4 (OVERLAPS) 28/45 variables, 17/19 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/45 variables, 8/27 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/45 variables, 6/33 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/45 variables, 0/33 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 8 (OVERLAPS) 3/48 variables, 3/36 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/48 variables, 7/43 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 0/43 constraints. Problems are: Problem set: 4 solved, 13 unsolved
At refinement iteration 11 (OVERLAPS) 0/48 variables, 0/43 constraints. Problems are: Problem set: 4 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 43 constraints, problems are : Problem set: 4 solved, 13 unsolved in 355 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 13/17 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 897ms problems are : Problem set: 4 solved, 13 unsolved
Fused 13 Parikh solutions to 8 different solutions.
SDD proceeding with computation,17 properties remain. new max is 2048
SDD size :1.14813e+11 after 4.52978e+11
SDD proceeding with computation,17 properties remain. new max is 4096
SDD size :4.52978e+11 after 8.06626e+11
Parikh walk visited 0 properties in 18262 ms.
Support contains 13 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:26:34] [INFO ] Invariant cache hit.
[2026-05-25 14:26:34] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 181 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
SDD proceeding with computation,17 properties remain. new max is 8192
SDD size :8.06626e+11 after 1.85793e+12
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 246 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 432ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 432ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 434 ms. Remains : 20/20 places, 28/28 transitions.
RANDOM walk for 40165 steps (8 resets) in 129 ms. (308 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 100 ms. (396 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40003 steps (8 resets) in 97 ms. (408 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 87 ms. (454 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40001 steps (8 resets) in 89 ms. (444 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 86 ms. (459 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40003 steps (8 resets) in 92 ms. (430 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40003 steps (8 resets) in 63 ms. (625 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40003 steps (8 resets) in 62 ms. (634 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 54 ms. (727 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 13/13 properties
BEST_FIRST walk for 40004 steps (8 resets) in 67 ms. (588 steps per ms) remains 13/13 properties
SDD proceeding with computation,17 properties remain. new max is 16384
SDD size :1.85793e+12 after 5.55063e+12
Interrupted probabilistic random walk after 178087 steps, run timeout after 3001 ms. (steps per millisecond=59 ) properties seen :0 out of 13
Probabilistic random walk after 178087 steps, saw 120209 distinct states, run finished after 3001 ms. (steps per millisecond=59 ) properties seen :0
[2026-05-25 14:26:38] [INFO ] Invariant cache hit.
[2026-05-25 14:26:38] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 1 (OVERLAPS) 4/17 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 13 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:38] [INFO ] Deduced a trap composed of 4 places in 25 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, 13 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 4 (OVERLAPS) 28/45 variables, 17/19 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/45 variables, 8/27 constraints. Problems are: Problem set: 0 solved, 13 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/45 variables, 0/27 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 7 (OVERLAPS) 3/48 variables, 3/30 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 30 constraints, problems are : Problem set: 0 solved, 13 unsolved in 188 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 13/13 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 13 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 1 (OVERLAPS) 4/17 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 4 (OVERLAPS) 28/45 variables, 17/19 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/45 variables, 8/27 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/45 variables, 6/33 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/45 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 8 (OVERLAPS) 3/48 variables, 3/36 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/48 variables, 7/43 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 11 (OVERLAPS) 0/48 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 43 constraints, problems are : Problem set: 0 solved, 13 unsolved in 385 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 13/13 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 577ms problems are : Problem set: 0 solved, 13 unsolved
Fused 13 Parikh solutions to 8 different solutions.
SDD proceeding with computation,17 properties remain. new max is 32768
SDD size :5.55063e+12 after 2.09715e+13
Parikh walk visited 0 properties in 11989 ms.
Support contains 13 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 0 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:26:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:51] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 14:26:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:26:51] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:26:51] [INFO ] Implicit Places using invariants and state equation in 46 ms returned []
Implicit Place search using SMT with State Equation took 116 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:26:51] [INFO ] Redundant transitions in 0 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:26:51] [INFO ] Invariant cache hit.
[2026-05-25 14:26:51] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 306 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 519 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 829ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 829ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 949 ms. Remains : 20/20 places, 28/28 transitions.
Attempting over-approximation, by ignoring read arcs.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running SMT prover for 13 properties.
[2026-05-25 14:26:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:26:52] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:52] [INFO ] After 127ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:13
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:26:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:26:52] [INFO ] After 74ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :13
[2026-05-25 14:26:52] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:26:52] [INFO ] After 65ms SMT Verify possible using 8 Read/Feed constraints in natural domain returned unsat :0 sat :13
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:52] [INFO ] Deduced a trap composed of 2 places in 38 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:52] [INFO ] Deduced a trap composed of 2 places in 27 ms of which 1 ms to minimize.
[2026-05-25 14:26:52] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 70 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:52] [INFO ] Deduced a trap composed of 2 places in 65 ms of which 8 ms to minimize.
[2026-05-25 14:26:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 83 ms
TRAPS : Iteration 1
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:26:52] [INFO ] Deduced a trap composed of 2 places in 70 ms of which 20 ms to minimize.
[2026-05-25 14:26:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 103 ms
TRAPS : Iteration 2
[2026-05-25 14:26:52] [INFO ] After 505ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :13
[2026-05-25 14:26:53] [INFO ] After 696ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :13
[2026-05-25 14:26:53] [INFO ] Flatten gal took : 12 ms
[2026-05-25 14:26:53] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:26:53] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8320862538788374345.gal : 1 ms
[2026-05-25 14:26:53] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3852528279668302392.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/ReachabilityCardinality8320862538788374345.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3852528279668302392.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/ReachabilityCardinality3852528279668302392.prop.
SDD proceeding with computation,13 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,13 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,13 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,13 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,13 properties remain. new max is 64
SDD size :36 after 39954
SDD proceeding with computation,13 properties remain. new max is 128
SDD size :39954 after 274734
SDD proceeding with computation,13 properties remain. new max is 256
SDD size :274734 after 2.30621e+09
SDD proceeding with computation,13 properties remain. new max is 512
SDD size :2.30621e+09 after 5.65601e+10
SDD proceeding with computation,13 properties remain. new max is 1024
SDD size :5.65601e+10 after 1.1507e+11
SDD proceeding with computation,13 properties remain. new max is 2048
SDD size :1.1507e+11 after 5.38802e+11
SDD proceeding with computation,13 properties remain. new max is 4096
SDD size :5.38802e+11 after 9.9129e+11
SDD proceeding with computation,13 properties remain. new max is 8192
SDD size :9.9129e+11 after 1.58341e+12
SDD proceeding with computation,13 properties remain. new max is 16384
SDD size :1.58341e+12 after 8.41644e+12
Detected timeout of ITS tools.
[2026-05-25 14:27:02] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:27:02] [INFO ] Applying decomposition
[2026-05-25 14:27:02] [INFO ] Flatten gal took : 2 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph12067620538307917057.txt' '-o' '/tmp/graph12067620538307917057.bin' '-w' '/tmp/graph12067620538307917057.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12067620538307917057.bin' '-l' '-1' '-v' '-w' '/tmp/graph12067620538307917057.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:27:03] [INFO ] Decomposing Gal with order
[2026-05-25 14:27:03] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:27:03] [INFO ] Flatten gal took : 217 ms
[2026-05-25 14:27:03] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 1 ms.
[2026-05-25 14:27:03] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1334933472359996358.gal : 19 ms
[2026-05-25 14:27:03] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18173511012451336301.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/ReachabilityCardinality1334933472359996358.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18173511012451336301.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/ReachabilityCardinality18173511012451336301.prop.
SDD proceeding with computation,13 properties remain. new max is 4
SDD size :1 after 12
SDD proceeding with computation,13 properties remain. new max is 8
SDD size :12 after 144
SDD proceeding with computation,13 properties remain. new max is 16
SDD size :144 after 468
SDD proceeding with computation,13 properties remain. new max is 32
SDD size :468 after 1080
SDD proceeding with computation,13 properties remain. new max is 64
SDD size :1080 after 23868
SDD proceeding with computation,13 properties remain. new max is 128
SDD size :23868 after 2.99527e+06
SDD proceeding with computation,13 properties remain. new max is 256
SDD size :2.99527e+06 after 3.58931e+11
SDD proceeding with computation,13 properties remain. new max is 512
SDD size :3.58931e+11 after 1.2637e+12
SDD proceeding with computation,13 properties remain. new max is 1024
SDD size :1.2637e+12 after 1.27099e+12
SDD proceeding with computation,13 properties remain. new max is 2048
SDD size :1.27099e+12 after 1.5514e+12
SDD proceeding with computation,13 properties remain. new max is 4096
SDD size :1.5514e+12 after 4.56631e+12
Detected timeout of ITS tools.
[2026-05-25 14:27:08] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:27:08] [INFO ] Applying decomposition
[2026-05-25 14:27:08] [INFO ] Flatten gal took : 8 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph4352842589055333167.txt' '-o' '/tmp/graph4352842589055333167.bin' '-w' '/tmp/graph4352842589055333167.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph4352842589055333167.bin' '-l' '-1' '-v' '-w' '/tmp/graph4352842589055333167.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:27:08] [INFO ] Decomposing Gal with order
[2026-05-25 14:27:08] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:27:08] [INFO ] Flatten gal took : 5 ms
[2026-05-25 14:27:08] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:27:08] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10269205312292026656.gal : 1 ms
[2026-05-25 14:27:08] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4011155181037790490.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/ReachabilityCardinality10269205312292026656.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4011155181037790490.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/ReachabilityCardinality4011155181037790490.prop.
SDD proceeding with computation,13 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,13 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,13 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,13 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,13 properties remain. new max is 64
SDD size :36 after 969
SDD proceeding with computation,13 properties remain. new max is 128
SDD size :969 after 374408
SDD proceeding with computation,13 properties remain. new max is 256
SDD size :374408 after 6.98717e+09
SDD proceeding with computation,13 properties remain. new max is 512
SDD size :6.98717e+09 after 7.17517e+09
SDD proceeding with computation,13 properties remain. new max is 1024
SDD size :7.17517e+09 after 7.17517e+09
SDD proceeding with computation,13 properties remain. new max is 2048
SDD size :7.17517e+09 after 7.17517e+09
SDD proceeding with computation,13 properties remain. new max is 4096
SDD size :7.17517e+09 after 1.295e+10
SDD proceeding with computation,13 properties remain. new max is 8192
SDD size :1.295e+10 after 1.97398e+10
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 31029 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, 199, 2, 197, 2, 1, 3, 3, 3, 2, 1, 189, 189] Max Struct:[+inf, 204, +inf, 204, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 204, 204]
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-01
Current structural bounds on expressions (Initially) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:23] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10014 steps (2 resets) in 6 ms. (1430 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 14:27:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:23] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:23] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:23] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:23] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:23] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:23] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:27:23] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:27:23] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:27:23] [INFO ] Added : 3 causal constraints over 1 iterations in 5 ms. Result :sat
Minimization took 4 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3] Max Struct:[+inf]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.1 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 8 ms. Remains 3 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:27:23] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:27:23] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 34 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 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 71ms 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 80 ms. Remains : 3/20 places, 4/28 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 26 ms. (steps per millisecond=384 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:23] [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 267 ms. (3731 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 348 ms. (2865 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:24] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:27:24] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:24] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:27:24] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:24] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:27:24] [INFO ] [Nat]Added 1 Read/Feed constraints in 4 ms returned sat
[2026-05-25 14:27:24] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:27:24] [INFO ] Added : 3 causal constraints over 1 iterations in 3 ms. Result :sat
Minimization took 4 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3] Max Struct:[+inf]
Support contains 1 out of 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 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:24] [INFO ] Implicit Places using invariants in 17 ms returned []
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:24] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:27:24] [INFO ] Implicit Places using invariants and state equation in 20 ms returned []
Implicit Place search using SMT with State Equation took 38 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:24] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
[2026-05-25 14:27:24] [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 49 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 128 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 13 ms. (steps per millisecond=769 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:27:24] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:24] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:27:24] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12237788930251076191.gal : 0 ms
[2026-05-25 14:27:24] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10960689116284460600.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/ReachabilityCardinality12237788930251076191.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10960689116284460600.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/ReachabilityCardinality10960689116284460600.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,6,0.002116,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002266,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 27 ms. (1428 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 20 ms. (1904 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 10 ms. (steps per millisecond=1 ) 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-D3N050-UpperBounds-01 3 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for Murphy-PT-D3N050-UpperBounds-01 in 1078 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-02
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:[204]
Current structural bounds on expressions (Before main loop) : Max Seen:[50] Max Struct:[204]
// Phase 1: matrix 28 rows 20 cols
[2026-05-25 14:27:24] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[50] Max Struct:[204]
RANDOM walk for 10037 steps (2 resets) in 5 ms. (1672 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:[105] Max Struct:[204]
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:24] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:24] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:24] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:27:24] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:24] [INFO ] [Nat]Absence check using state equation in 14 ms returned sat
[2026-05-25 14:27:24] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:27:24] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:27:24] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:24] [INFO ] Added : 0 causal constraints over 0 iterations in 9 ms. Result :sat
Minimization took 23 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[105] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[199] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
[2026-05-25 14:27:24] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 141 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 265 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 408ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 409ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 410 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:27:24] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[199] Max Struct:[204]
RANDOM walk for 1000041 steps (2 resets) in 376 ms. (2652 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 360 ms. (2770 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[199] Max Struct:[204]
[2026-05-25 14:27:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:25] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:25] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:27:25] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:27:25] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:27:25] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:27:25] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:27:25] [INFO ] [Nat]Added 8 Read/Feed constraints in 5 ms returned sat
[2026-05-25 14:27:25] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:27:25] [INFO ] Added : 1 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[199] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[199] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 0 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:27:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:25] [INFO ] Implicit Places using invariants in 24 ms returned []
[2026-05-25 14:27:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:25] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:27:25] [INFO ] Implicit Places using invariants and state equation in 39 ms returned []
Implicit Place search using SMT with State Equation took 65 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:25] [INFO ] Redundant transitions in 0 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:27:25] [INFO ] Invariant cache hit.
[2026-05-25 14:27:25] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 152 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 252 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 407ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 407ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 476 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:27:26] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:26] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:26] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7754296629025445178.gal : 0 ms
[2026-05-25 14:27:26] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15321219031010318480.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/ReachabilityCardinality7754296629025445178.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15321219031010318480.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/ReachabilityCardinality15321219031010318480.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 40068 steps (8 resets) in 36 ms. (1082 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 43 ms. (909 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 37 ms. (1052 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 5.66311e+10
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :5.66311e+10 after 1.14813e+11
Interrupted probabilistic random walk after 690441 steps, run timeout after 3001 ms. (steps per millisecond=230 ) properties seen :0 out of 2
Probabilistic random walk after 690441 steps, saw 468594 distinct states, run finished after 3001 ms. (steps per millisecond=230 ) properties seen :0
[2026-05-25 14:27:29] [INFO ] Invariant cache hit.
[2026-05-25 14:27:29] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:29] [INFO ] Deduced a trap composed of 4 places in 31 ms of which 3 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 30 constraints, problems are : Problem set: 1 solved, 1 unsolved in 86 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 1 solved, 1 unsolved in 59 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 150ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 31 ms.
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:27:29] [INFO ] Invariant cache hit.
[2026-05-25 14:27:29] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 155 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 240 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 398ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 399ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 400 ms. Remains : 20/20 places, 28/28 transitions.
RANDOM walk for 40008 steps (8 resets) in 31 ms. (1250 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 20 ms. (1904 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2241903 steps, run timeout after 3001 ms. (steps per millisecond=747 ) properties seen :0 out of 1
Probabilistic random walk after 2241903 steps, saw 1525363 distinct states, run finished after 3001 ms. (steps per millisecond=747 ) properties seen :0
[2026-05-25 14:27:32] [INFO ] Invariant cache hit.
[2026-05-25 14:27:32] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/20 variables, 8/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/20 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/28 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/28 variables, 4/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 20/48 variables, 12/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 1 unsolved in 46 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:27:32] [INFO ] Deduced a trap composed of 4 places in 28 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 0 solved, 1 unsolved in 86 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 136ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 37 ms.
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:27:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
SDD proceeding with computation,2 properties remain. new max is 2048
SDD size :1.14813e+11 after 4.52978e+11
[2026-05-25 14:27:33] [INFO ] Implicit Places using invariants in 22 ms returned []
[2026-05-25 14:27:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:27:33] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:27:33] [INFO ] Implicit Places using invariants and state equation in 37 ms returned []
Implicit Place search using SMT with State Equation took 61 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:27:33] [INFO ] Redundant transitions in 0 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:27:33] [INFO ] Invariant cache hit.
[2026-05-25 14:27:33] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 175 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 232 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 412ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 412ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 479 ms. Remains : 20/20 places, 28/28 transitions.
Attempting over-approximation, by ignoring read arcs.
Graph (complete) has 48 edges and 20 vertex of which 8 are kept as prefixes of interest. Removing 12 places using SCC suffix rule.0 ms
Discarding 12 places :
Also discarding 16 output transitions
Drop transitions (Output transitions of discarded places.) removed 16 transitions
Applied a total of 1 rules in 1 ms. Remains 8 /20 variables (removed 12) and now considering 12/28 (removed 16) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 12 rows 8 cols
[2026-05-25 14:27:33] [INFO ] Computed 1 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:27:33] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:33] [INFO ] After 21ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 14:27:33] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:27:33] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 14:27:33] [INFO ] State equation strengthened by 4 read => feed constraints.
[2026-05-25 14:27:33] [INFO ] After 4ms SMT Verify possible using 4 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 14:27:33] [INFO ] After 6ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:27:33] [INFO ] After 34ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 14:27:33] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:27:33] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:33] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12059163113366110167.gal : 1 ms
[2026-05-25 14:27:33] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7430171440097990630.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/ReachabilityCardinality12059163113366110167.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7430171440097990630.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/ReachabilityCardinality7430171440097990630.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
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.00836e+09 after 1.01532e+09
SDD proceeding with computation,2 properties remain. new max is 4096
SDD size :4.52978e+11 after 8.06626e+11
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.47892e+09 after 2.49454e+09
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.57255e+09 after 4.58937e+09
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.48506e+10 after 1.4871e+10
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :5.58847e+10 after 5.59122e+10
SDD proceeding with computation,2 properties remain. new max is 8192
SDD size :8.06626e+11 after 1.85793e+12
Detected timeout of ITS tools.
[2026-05-25 14:27:48] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:27:48] [INFO ] Applying decomposition
[2026-05-25 14:27:48] [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/graph2871125043095183689.txt' '-o' '/tmp/graph2871125043095183689.bin' '-w' '/tmp/graph2871125043095183689.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2871125043095183689.bin' '-l' '-1' '-v' '-w' '/tmp/graph2871125043095183689.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:27:48] [INFO ] Decomposing Gal with order
[2026-05-25 14:27:48] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:27:48] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:27:48] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:27:48] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17757983252331194212.gal : 0 ms
[2026-05-25 14:27:48] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality294289859160805327.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/ReachabilityCardinality17757983252331194212.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality294289859160805327.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/ReachabilityCardinality294289859160805327.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 6.41708e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.01288e+10 after 1.02927e+10
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :1.02927e+10 after 1.02927e+10
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.02927e+10 after 1.02927e+10
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.02927e+10 after 1.0306e+10
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :1.0306e+10 after 1.0463e+10
SDD proceeding with computation,2 properties remain. new max is 16384
SDD size :1.85793e+12 after 5.55063e+12
SDD proceeding with computation,1 properties remain. new max is 16384
SDD size :2.71427e+10 after 2.75793e+10
SDD proceeding with computation,2 properties remain. new max is 32768
SDD size :5.55063e+12 after 2.09715e+13
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30147 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-25 14:28:03] [INFO ] Flatten gal took : 6 ms
[2026-05-25 14:28:03] [INFO ] Applying decomposition
[2026-05-25 14:28:03] [INFO ] Flatten gal took : 4 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph1288697429868213862.txt' '-o' '/tmp/graph1288697429868213862.bin' '-w' '/tmp/graph1288697429868213862.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1288697429868213862.bin' '-l' '-1' '-v' '-w' '/tmp/graph1288697429868213862.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:28:03] [INFO ] Decomposing Gal with order
[2026-05-25 14:28:03] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:28:03] [INFO ] Flatten gal took : 5 ms
[2026-05-25 14:28:03] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:28:03] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1389537607114687312.gal : 1 ms
[2026-05-25 14:28:03] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12148648556001465287.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/ReachabilityCardinality1389537607114687312.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12148648556001465287.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/ReachabilityCardinality12148648556001465287.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 72
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :72 after 252
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :252 after 576
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :576 after 1188
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1188 after 29376
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :29376 after 7.48818e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :7.48818e+06 after 9.9963e+11
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :9.9963e+11 after 2.54944e+12
Detected timeout of ITS tools.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[199] Max Struct:[204]
Ending property specific reduction for Murphy-PT-D3N050-UpperBounds-02 in 89452 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-05
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 28 rows 20 cols
[2026-05-25 14:28:53] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10011 steps (2 resets) in 9 ms. (1001 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 7 ms. (1250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:53] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:53] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:53] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:53] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:28:53] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:53] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:53] [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 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.0 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:28:53] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:28:53] [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 36 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 67ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 67ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 69 ms. Remains : 3/20 places, 4/28 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 11 ms. (steps per millisecond=909 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:53] [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 275 ms. (3623 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 195 ms. (5102 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:54] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:28:54] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:54] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:54] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:54] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:28:54] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:54] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:28:54] [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 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 14:28:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:54] [INFO ] Implicit Places using invariants in 13 ms returned []
[2026-05-25 14:28:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:54] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:28:54] [INFO ] Implicit Places using invariants and state equation in 16 ms returned []
Implicit Place search using SMT with State Equation took 30 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:54] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:28:54] [INFO ] Invariant cache hit.
[2026-05-25 14:28:54] [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 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]
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 88ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 88ms
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 9 ms. (steps per millisecond=1111 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:28:54] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:54] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:28:54] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7098083372647017853.gal : 1 ms
[2026-05-25 14:28:54] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2408642772408560508.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/ReachabilityCardinality7098083372647017853.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2408642772408560508.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/ReachabilityCardinality2408642772408560508.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,6,0.002292,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002446,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 68 ms. (579 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 41 ms. (952 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 9 ms. (steps per millisecond=1 ) 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-D3N050-UpperBounds-05 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-D3N050-UpperBounds-05 in 940 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-06
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:[204]
Current structural bounds on expressions (Before main loop) : Max Seen:[50] Max Struct:[204]
// Phase 1: matrix 28 rows 20 cols
[2026-05-25 14:28:54] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[50] Max Struct:[204]
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:[93] Max Struct:[204]
[2026-05-25 14:28:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:54] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:28:54] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:28:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:54] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:54] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:28:54] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:28:54] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:54] [INFO ] Added : 0 causal constraints over 0 iterations in 4 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[93] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[127] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:28:54] [INFO ] Invariant cache hit.
[2026-05-25 14:28:54] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 146 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 245 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 396ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 396ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 397 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:28:55] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[127] Max Struct:[204]
RANDOM walk for 1000019 steps (2 resets) in 368 ms. (2710 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 353 ms. (2824 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[127] Max Struct:[204]
[2026-05-25 14:28:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:55] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:55] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:55] [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 14:28:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:56] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:28:56] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:28:56] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:56] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:56] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 36 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[127] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[149] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:28:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:56] [INFO ] Implicit Places using invariants in 26 ms returned []
[2026-05-25 14:28:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:56] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:28:56] [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 14:28:56] [INFO ] Redundant transitions in 0 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:28:56] [INFO ] Invariant cache hit.
[2026-05-25 14:28:56] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 148 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 243 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 395ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 395ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 454 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:28:56] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[149] Max Struct:[204]
RANDOM walk for 1000020 steps (2 resets) in 372 ms. (2681 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 350 ms. (2849 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[149] Max Struct:[204]
[2026-05-25 14:28:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:57] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:28:57] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-25 14:28:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:28:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:28:57] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:28:57] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:28:57] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:28:57] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:28:57] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[149] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[149] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:28:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:57] [INFO ] Implicit Places using invariants in 28 ms returned []
[2026-05-25 14:28:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:28:57] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:28:57] [INFO ] Implicit Places using invariants and state equation in 34 ms returned []
Implicit Place search using SMT with State Equation took 63 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:28:57] [INFO ] Redundant transitions in 1 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:28:57] [INFO ] Invariant cache hit.
[2026-05-25 14:28:57] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 148 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 249 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 399ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 399ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 467 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:28:57] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:57] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:28:57] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6547224693394852219.gal : 0 ms
[2026-05-25 14:28:57] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8684426142804850482.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/ReachabilityCardinality6547224693394852219.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8684426142804850482.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
RANDOM walk for 40086 steps (8 resets) in 47 ms. (835 steps per ms) remains 2/2 properties
Loading property file /tmp/ReachabilityCardinality8684426142804850482.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
BEST_FIRST walk for 40003 steps (8 resets) in 33 ms. (1176 steps per ms) remains 2/2 properties
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 40002 steps (8 resets) in 37 ms. (1052 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 5.66311e+10
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :5.66311e+10 after 1.14813e+11
Interrupted probabilistic random walk after 574891 steps, run timeout after 3001 ms. (steps per millisecond=191 ) properties seen :0 out of 2
Probabilistic random walk after 574891 steps, saw 390952 distinct states, run finished after 3003 ms. (steps per millisecond=191 ) properties seen :0
[2026-05-25 14:29:00] [INFO ] Invariant cache hit.
[2026-05-25 14:29:00] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:00] [INFO ] Deduced a trap composed of 4 places in 34 ms of which 2 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 30 constraints, problems are : Problem set: 1 solved, 1 unsolved in 81 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 1 solved, 1 unsolved in 43 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 132ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 16 ms.
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:01] [INFO ] Invariant cache hit.
[2026-05-25 14:29:01] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 196 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 246 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 445ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 445ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 448 ms. Remains : 20/20 places, 28/28 transitions.
RANDOM walk for 40126 steps (8 resets) in 34 ms. (1146 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 24 ms. (1600 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2486508 steps, run timeout after 3001 ms. (steps per millisecond=828 ) properties seen :0 out of 1
Probabilistic random walk after 2486508 steps, saw 1692913 distinct states, run finished after 3001 ms. (steps per millisecond=828 ) properties seen :0
[2026-05-25 14:29:04] [INFO ] Invariant cache hit.
[2026-05-25 14:29:04] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/20 variables, 8/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/20 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/28 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/28 variables, 4/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 20/48 variables, 12/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 1 unsolved in 40 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:04] [INFO ] Deduced a trap composed of 4 places in 31 ms of which 3 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 0 solved, 1 unsolved in 79 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 124ms problems are : Problem set: 0 solved, 1 unsolved
Finished Parikh walk after 1451 steps, including 9 resets, run visited all 1 properties in 3 ms. (steps per millisecond=483 )
Parikh walk visited 1 properties in 8 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:[149] Max Struct:[204]
Ending property specific reduction for Murphy-PT-D3N050-UpperBounds-06 in 10008 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-07
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 14:29:04] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10037 steps (2 resets) in 5 ms. (1672 steps per ms)
BEST_FIRST walk for 10000 steps (2 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:04] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:04] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:04] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:04] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:04] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:04] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:04] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:04] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:04] [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 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.0 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:04] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:29:04] [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 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]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 33 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 67ms 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 71 ms. Remains : 3/20 places, 4/28 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=1666 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:04] [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 281 ms. (3546 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 180 ms. (5524 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:05] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:05] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:05] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:05] [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 14:29:05] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:05] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:05] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:29:05] [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 2 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 2 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:05] [INFO ] Implicit Places using invariants in 17 ms returned []
[2026-05-25 14:29:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:05] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:05] [INFO ] Implicit Places using invariants and state equation in 19 ms returned []
Implicit Place search using SMT with State Equation took 38 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:05] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:05] [INFO ] Invariant cache hit.
[2026-05-25 14:29:05] [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 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]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 41 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 78ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 78ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 125 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 :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:05] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:05] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15223559813467607974.gal : 1 ms
[2026-05-25 14:29:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9592647634303741758.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/ReachabilityCardinality15223559813467607974.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9592647634303741758.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/ReachabilityCardinality9592647634303741758.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,6,0.002023,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002244,4136,1,0,5,44,7,0,25,26,0
ITS tools runner thread asked to quit. Dying gracefully.
RANDOM walk for 40000 steps (8 resets) in 164 ms. (242 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 110 ms. (360 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-D3N050-UpperBounds-07 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-D3N050-UpperBounds-07 in 951 ms.
Starting property specific reduction for Murphy-PT-D3N050-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 28 rows 20 cols
[2026-05-25 14:29:05] [INFO ] Computed 1 invariants in 1 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 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:05] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:05] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:29:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:05] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:05] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:05] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:05] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:05] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:05] [INFO ] Added : 1 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 5 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 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.1 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:05] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:29:05] [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 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 : 3/20 places, 4/28 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 :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:05] [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 235 ms. (4237 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 205 ms. (4854 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:06] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:29:06] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:06] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:06] [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 14:29:06] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:06] [INFO ] [Nat]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:06] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:29:06] [INFO ] Added : 3 causal constraints over 2 iterations in 3 ms. Result :sat
Minimization took 2 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:06] [INFO ] Implicit Places using invariants in 19 ms returned []
[2026-05-25 14:29:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:06] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:06] [INFO ] Implicit Places using invariants and state equation in 18 ms returned []
Implicit Place search using SMT with State Equation took 38 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:06] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:06] [INFO ] Invariant cache hit.
[2026-05-25 14:29:06] [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 40 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 77ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 77ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 120 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 10 ms. (steps per millisecond=1000 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:06] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:06] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:06] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9071035832353625830.gal : 1 ms
[2026-05-25 14:29:06] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12799167702270404008.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/ReachabilityCardinality9071035832353625830.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12799167702270404008.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/ReachabilityCardinality12799167702270404008.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,6,0.004947,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.005331,4136,1,0,5,44,7,0,25,26,0
RANDOM walk for 40000 steps (8 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 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 9 ms. (steps per millisecond=1 ) 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-D3N050-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-D3N050-UpperBounds-08 in 853 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-09
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 28 rows 20 cols
[2026-05-25 14:29:06] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10040 steps (2 resets) in 5 ms. (1673 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:06] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:06] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:06] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:06] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:06] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:06] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:06] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:06] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3] Max Struct:[+inf]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.0 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:06] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:29:06] [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 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]
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 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 73 ms. Remains : 3/20 places, 4/28 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 :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:06] [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 251 ms. (3968 steps per ms)
BEST_FIRST walk for 1000000 steps (2 resets) in 214 ms. (4651 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:07] [INFO ] [Real]Absence check using state equation in 1 ms returned sat
[2026-05-25 14:29:07] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:07] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:07] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:07] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:07] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:07] [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 14:29:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:07] [INFO ] Implicit Places using invariants in 20 ms returned []
[2026-05-25 14:29:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:07] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:07] [INFO ] Implicit Places using invariants and state equation in 18 ms returned []
Implicit Place search using SMT with State Equation took 39 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:07] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:07] [INFO ] Invariant cache hit.
[2026-05-25 14:29:07] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 29 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 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 64ms 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 112 ms. Remains : 3/3 places, 4/4 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {0=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {0=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=1250 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:07] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:07] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:07] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16456521115628057735.gal : 0 ms
[2026-05-25 14:29:07] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13750293492148619420.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/ReachabilityCardinality16456521115628057735.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13750293492148619420.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40001 steps (8 resets) in 38 ms. (1025 steps per ms) remains 1/1 properties

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
Loading property file /tmp/ReachabilityCardinality13750293492148619420.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,6,0.002593,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002732,4136,1,0,5,44,7,0,25,26,0
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 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-D3N050-UpperBounds-09 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-D3N050-UpperBounds-09 in 873 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-10
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 28 rows 20 cols
[2026-05-25 14:29:07] [INFO ] Computed 1 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 6 ms. (1428 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 14:29:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:07] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:07] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:07] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:07] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:29:07] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:07] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:07] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:07] [INFO ] Added : 3 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 5 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3] Max Struct:[+inf]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.0 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:07] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:29:07] [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 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 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 75 ms. Remains : 3/20 places, 4/28 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 9 ms. (steps per millisecond=1111 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:07] [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 262 ms. (3802 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 194 ms. (5128 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:08] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:08] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:08] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:08] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:08] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:08] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:08] [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 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:08] [INFO ] Implicit Places using invariants in 14 ms returned []
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:08] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:08] [INFO ] Implicit Places using invariants and state equation in 17 ms returned []
Implicit Place search using SMT with State Equation took 31 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:08] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
[2026-05-25 14:29:08] [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 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 76ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 76ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 113 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 14:29:08] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:29:08] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:08] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13929857251008917295.gal : 1 ms
[2026-05-25 14:29:08] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4045167920648657204.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/ReachabilityCardinality13929857251008917295.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4045167920648657204.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 ...329
Loading property file /tmp/ReachabilityCardinality4045167920648657204.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,6,0.002299,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002464,4136,1,0,5,44,7,0,25,26,0
BEST_FIRST walk for 40000 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 7 ms. (steps per millisecond=2 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D3N050-UpperBounds-10 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-D3N050-UpperBounds-10 in 883 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-11
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 28 rows 20 cols
[2026-05-25 14:29:08] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[3] Max Struct:[+inf]
RANDOM walk for 10020 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:[3] Max Struct:[+inf]
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:08] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:08] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:08] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:08] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:08] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:08] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:08] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:08] [INFO ] Added : 3 causal constraints over 1 iterations in 5 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 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.1 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:08] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:29:08] [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 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]
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 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 73 ms. Remains : 3/20 places, 4/28 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 14:29:08] [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 231 ms. (4310 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 191 ms. (5208 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:08] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:08] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:08] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:08] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:08] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:08] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:08] [INFO ] Added : 3 causal constraints over 1 iterations in 4 ms. Result :sat
Minimization took 3 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[3] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[3] Max Struct:[+inf]
Support contains 1 out of 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 0 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:08] [INFO ] Implicit Places using invariants in 20 ms returned []
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:08] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:08] [INFO ] Implicit Places using invariants and state equation in 19 ms returned []
Implicit Place search using SMT with State Equation took 39 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:08] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:08] [INFO ] Invariant cache hit.
[2026-05-25 14:29:08] [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 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]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 40 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 76ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 76ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 119 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 4 ms. (steps per millisecond=2500 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[3] Max Struct:[+inf]
[2026-05-25 14:29:09] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:09] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:29:09] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14013656318504799937.gal : 4 ms
[2026-05-25 14:29:09] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3285150982568465197.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/ReachabilityCardinality14013656318504799937.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3285150982568465197.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/ReachabilityCardinality3285150982568465197.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,6,0.00248,4136,2,8,5,44,7,0,24,26,0
Total reachable state count : 6

Verifying 1 reachability properties.
RANDOM walk for 40002 steps (8 resets) in 28 ms. (1379 steps per ms) remains 1/1 properties
Invariant property MIN0 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,0,0.002659,4136,1,0,5,44,7,0,25,26,0
ITS tools runner thread asked to quit. Dying gracefully.
BEST_FIRST walk for 40001 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 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-D3N050-UpperBounds-11 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-D3N050-UpperBounds-11 in 852 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-12
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 28 rows 20 cols
[2026-05-25 14:29:09] [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 4 ms. (2000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:09] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:09] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:29:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:09] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:09] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:29:09] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:09] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:09] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:09] [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 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.0 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:09] [INFO ] Computed 0 invariants in 1 ms
[2026-05-25 14:29:09] [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 78ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 78ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 78 ms. Remains : 3/20 places, 4/28 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 :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:09] [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 252 ms. (3952 steps per ms)
BEST_FIRST walk for 1000001 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 14:29:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:09] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:09] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:09] [INFO ] [Real]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:09] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:09] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:09] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:09] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 0 ms.
[2026-05-25 14:29:09] [INFO ] Added : 2 causal constraints over 1 iterations in 3 ms. Result :sat
Minimization took 2 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2] Max Struct:[+inf]
Support contains 1 out of 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:09] [INFO ] Implicit Places using invariants in 13 ms returned []
[2026-05-25 14:29:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:09] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:09] [INFO ] Implicit Places using invariants and state equation in 16 ms returned []
Implicit Place search using SMT with State Equation took 30 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:09] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:09] [INFO ] Invariant cache hit.
[2026-05-25 14:29:09] [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 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 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 40 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 74ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 74ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 109 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 :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 14:29:09] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:29:09] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:09] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15316825241646157214.gal : 0 ms
[2026-05-25 14:29:09] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6476328610341099280.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/ReachabilityCardinality15316825241646157214.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6476328610341099280.prop' '--nowitness' '--gen-order' 'FOLLOW'
RANDOM walk for 40000 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 ...329
Loading property file /tmp/ReachabilityCardinality6476328610341099280.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,6,0.002203,4136,2,8,5,44,7,0,24,26,0
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
MIN0,0,0.002358,4136,1,0,5,44,7,0,25,26,0
BEST_FIRST walk for 40001 steps (8 resets) in 19 ms. (2000 steps per ms) remains 1/1 properties
Probably explored full state space saw : 6 states, properties seen :0
Probabilistic random walk after 14 steps, saw 6 distinct states, run finished after 3 ms. (steps per millisecond=4 ) properties seen :0
Explored full state space saw : 6 states, properties seen :0
Exhaustive walk after 14 steps, saw 6 distinct states, run finished after 1 ms. (steps per millisecond=14 ) properties seen :0
FORMULA Murphy-PT-D3N050-UpperBounds-12 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-D3N050-UpperBounds-12 in 848 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-13
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
// Phase 1: matrix 28 rows 20 cols
[2026-05-25 14:29:09] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10003 steps (2 resets) in 5 ms. (1667 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 14:29:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:09] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:10] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:10] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:29:10] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:10] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:10] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:10] [INFO ] Added : 3 causal constraints over 2 iterations in 8 ms. Result :sat
Minimization took 5 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 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Graph (complete) has 56 edges and 20 vertex of which 3 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.1 ms
Discarding 17 places :
Also discarding 23 output transitions
Drop transitions (Output transitions of discarded places.) removed 23 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 /20 variables (removed 17) and now considering 4/28 (removed 24) transitions.
Running 3 sub problems to find dead transitions.
// Phase 1: matrix 4 rows 3 cols
[2026-05-25 14:29:10] [INFO ] Computed 0 invariants in 0 ms
[2026-05-25 14:29:10] [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 37 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 70ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 70ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 71 ms. Remains : 3/20 places, 4/28 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 :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:10] [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 231 ms. (4310 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 186 ms. (5347 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 14:29:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:10] [INFO ] [Real]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:10] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:10] [INFO ] [Real]Added 1 Read/Feed constraints in 0 ms returned sat
[2026-05-25 14:29:10] [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 14:29:10] [INFO ] [Nat]Absence check using state equation in 2 ms returned sat
[2026-05-25 14:29:10] [INFO ] [Nat]Added 1 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:10] [INFO ] Computed and/alt/rep : 3/6/3 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:10] [INFO ] Added : 3 causal constraints over 2 iterations in 4 ms. Result :sat
Minimization took 2 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 3 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 1 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 3/3 places, 4/4 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 3/3 places, 4/4 transitions.
Applied a total of 0 rules in 0 ms. Remains 3 /3 variables (removed 0) and now considering 4/4 (removed 0) transitions.
[2026-05-25 14:29:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:10] [INFO ] Implicit Places using invariants in 20 ms returned []
[2026-05-25 14:29:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:10] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-25 14:29:10] [INFO ] Implicit Places using invariants and state equation in 21 ms returned []
Implicit Place search using SMT with State Equation took 41 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:10] [INFO ] Redundant transitions in 0 ms returned []
Running 3 sub problems to find dead transitions.
[2026-05-25 14:29:10] [INFO ] Invariant cache hit.
[2026-05-25 14:29:10] [INFO ] State equation strengthened by 1 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/7 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 7/7 variables, and 4 constraints, problems are : Problem set: 0 solved, 3 unsolved in 29 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 4/6 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/6 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (OVERLAPS) 1/7 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/7 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/7 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 7/7 variables, and 7 constraints, problems are : Problem set: 0 solved, 3 unsolved in 40 ms.
Refiners :[State Equation: 3/3 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 74ms problems are : Problem set: 0 solved, 3 unsolved
Search for dead transitions found 0 dead transitions in 74ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 122 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 14:29:10] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:10] [INFO ] Flatten gal took : 0 ms
[2026-05-25 14:29:10] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3882805087484880224.gal : 0 ms
[2026-05-25 14:29:10] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1866524332698083264.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/ReachabilityCardinality3882805087484880224.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1866524332698083264.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/ReachabilityCardinality1866524332698083264.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,6,0.001944,4136,2,8,5,44,7,0,24,26,0
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
RANDOM walk for 40000 steps (8 resets) in 26 ms. (1481 steps per ms) remains 1/1 properties
MIN0,0,0.002177,4136,1,0,5,44,7,0,25,26,0
BEST_FIRST walk for 40004 steps (8 resets) in 14 ms. (2666 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 2 ms. (steps per millisecond=7 ) properties seen :0
FORMULA Murphy-PT-D3N050-UpperBounds-13 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-D3N050-UpperBounds-13 in 831 ms.
Starting property specific reduction for Murphy-PT-D3N050-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:[204]
Current structural bounds on expressions (Before main loop) : Max Seen:[50] Max Struct:[204]
// Phase 1: matrix 28 rows 20 cols
[2026-05-25 14:29:10] [INFO ] Computed 1 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[50] Max Struct:[204]
RANDOM walk for 10028 steps (2 resets) in 4 ms. (2005 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:[93] Max Struct:[204]
[2026-05-25 14:29:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:10] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:10] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:10] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:10] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:10] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:10] [INFO ] [Nat]Added 8 Read/Feed constraints in 2 ms returned sat
[2026-05-25 14:29:10] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:10] [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:[93] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[125] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:10] [INFO ] Invariant cache hit.
[2026-05-25 14:29:10] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 155 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 247 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 406ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 406ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 407 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:29:11] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[125] Max Struct:[204]
RANDOM walk for 1000045 steps (2 resets) in 382 ms. (2611 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 346 ms. (2881 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[125] Max Struct:[204]
[2026-05-25 14:29:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:12] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:12] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:12] [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 14:29:12] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:12] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:29:12] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:12] [INFO ] [Nat]Added 8 Read/Feed constraints in 12 ms returned sat
[2026-05-25 14:29:12] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:12] [INFO ] Added : 4 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 50 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[125] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[189] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 0 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 7 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:29:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:12] [INFO ] Implicit Places using invariants in 27 ms returned []
[2026-05-25 14:29:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:12] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:12] [INFO ] Implicit Places using invariants and state equation in 35 ms returned []
Implicit Place search using SMT with State Equation took 64 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:12] [INFO ] Redundant transitions in 0 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:12] [INFO ] Invariant cache hit.
[2026-05-25 14:29:12] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 148 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 246 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 396ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 397ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 475 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:29:12] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[189] Max Struct:[204]
RANDOM walk for 1000000 steps (2 resets) in 366 ms. (2724 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:[189] Max Struct:[204]
[2026-05-25 14:29:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:13] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:13] [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 14:29:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:13] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:29:13] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:13] [INFO ] [Nat]Added 8 Read/Feed constraints in 6 ms returned sat
[2026-05-25 14:29:13] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:29:13] [INFO ] Added : 2 causal constraints over 1 iterations in 7 ms. Result :sat
Minimization took 28 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[189] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[189] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 0 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:29:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:13] [INFO ] Implicit Places using invariants in 26 ms returned []
[2026-05-25 14:29:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:13] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:13] [INFO ] Implicit Places using invariants and state equation in 30 ms returned []
Implicit Place search using SMT with State Equation took 56 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:13] [INFO ] Redundant transitions in 0 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:13] [INFO ] Invariant cache hit.
[2026-05-25 14:29:13] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 149 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 241 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 392ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 392ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 452 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:29:14] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:14] [INFO ] Flatten gal took : 1 ms
[2026-05-25 14:29:14] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8848822834157629887.gal : 1 ms
[2026-05-25 14:29:14] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6640228119120976803.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/ReachabilityCardinality8848822834157629887.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6640228119120976803.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/ReachabilityCardinality6640228119120976803.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
RANDOM walk for 40117 steps (8 resets) in 66 ms. (598 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
BEST_FIRST walk for 40003 steps (8 resets) in 21 ms. (1818 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 5.66311e+10
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :5.66311e+10 after 1.14813e+11
Interrupted probabilistic random walk after 504630 steps, run timeout after 3002 ms. (steps per millisecond=168 ) properties seen :0 out of 2
Probabilistic random walk after 504630 steps, saw 342836 distinct states, run finished after 3005 ms. (steps per millisecond=167 ) properties seen :0
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:17] [INFO ] Deduced a trap composed of 4 places in 31 ms of which 2 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 30 constraints, problems are : Problem set: 1 solved, 1 unsolved in 82 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 1 solved, 1 unsolved in 47 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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 27 ms.
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:17] [INFO ] Invariant cache hit.
[2026-05-25 14:29:17] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 151 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 252 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 406ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 406ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 407 ms. Remains : 20/20 places, 28/28 transitions.
RANDOM walk for 40034 steps (8 resets) in 29 ms. (1334 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 23 ms. (1666 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2484586 steps, run timeout after 3001 ms. (steps per millisecond=827 ) properties seen :0 out of 1
Probabilistic random walk after 2484586 steps, saw 1691666 distinct states, run finished after 3001 ms. (steps per millisecond=827 ) properties seen :0
[2026-05-25 14:29:20] [INFO ] Invariant cache hit.
[2026-05-25 14:29:20] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/20 variables, 8/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/20 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/28 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/28 variables, 4/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 20/48 variables, 12/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 1 unsolved in 41 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:20] [INFO ] Deduced a trap composed of 4 places in 31 ms of which 3 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 0 solved, 1 unsolved in 82 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 129ms problems are : Problem set: 0 solved, 1 unsolved
Finished Parikh walk after 460 steps, including 3 resets, run visited all 1 properties in 1 ms. (steps per millisecond=460 )
Parikh walk visited 1 properties in 0 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:[189] Max Struct:[204]
Ending property specific reduction for Murphy-PT-D3N050-UpperBounds-14 in 10017 ms.
Starting property specific reduction for Murphy-PT-D3N050-UpperBounds-15
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:[204]
Current structural bounds on expressions (Before main loop) : Max Seen:[50] Max Struct:[204]
[2026-05-25 14:29:20] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[50] Max Struct:[204]
RANDOM walk for 10001 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:[95] Max Struct:[204]
[2026-05-25 14:29:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:20] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:29:20] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:29:20] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:29:20] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:20] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:29:20] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:20] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:20] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:20] [INFO ] Added : 2 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 45 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[95] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[155] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:20] [INFO ] Invariant cache hit.
[2026-05-25 14:29:20] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 162 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 252 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 419ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 419ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 420 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:29:21] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[155] Max Struct:[204]
RANDOM walk for 1000000 steps (2 resets) in 411 ms. (2427 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 361 ms. (2762 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[155] Max Struct:[204]
[2026-05-25 14:29:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:22] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:29:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:29:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:29:22] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-25 14:29:22] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:22] [INFO ] [Nat]Added 8 Read/Feed constraints in 1 ms returned sat
[2026-05-25 14:29:22] [INFO ] Computed and/alt/rep : 16/40/16 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:29:22] [INFO ] Added : 5 causal constraints over 1 iterations in 6 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[155] Max Struct:[204]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[155] Max Struct:[204]
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 20/20 places, 28/28 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 0 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
[2026-05-25 14:29:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:22] [INFO ] Implicit Places using invariants in 29 ms returned []
[2026-05-25 14:29:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 14:29:22] [INFO ] State equation strengthened by 8 read => feed constraints.
[2026-05-25 14:29:22] [INFO ] Implicit Places using invariants and state equation in 32 ms returned []
Implicit Place search using SMT with State Equation took 66 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 14:29:22] [INFO ] Redundant transitions in 1 ms returned []
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:22] [INFO ] Invariant cache hit.
[2026-05-25 14:29:22] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 142 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 247 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 393ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 393ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 467 ms. Remains : 20/20 places, 28/28 transitions.
[2026-05-25 14:29:22] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:29:22] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:29:22] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16031920179116080703.gal : 0 ms
[2026-05-25 14:29:22] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13419343823141857870.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/ReachabilityCardinality16031920179116080703.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13419343823141857870.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/ReachabilityCardinality13419343823141857870.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 40127 steps (8 resets) in 50 ms. (786 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 30 ms. (1290 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 27 ms. (1428 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 5.66311e+10
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :5.66311e+10 after 1.14813e+11
Interrupted probabilistic random walk after 536617 steps, run timeout after 3001 ms. (steps per millisecond=178 ) properties seen :0 out of 2
Probabilistic random walk after 536617 steps, saw 365153 distinct states, run finished after 3001 ms. (steps per millisecond=178 ) properties seen :0
[2026-05-25 14:29:25] [INFO ] Invariant cache hit.
[2026-05-25 14:29:25] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:25] [INFO ] Deduced a trap composed of 4 places in 28 ms of which 2 ms to minimize.
Problem MAX0 is UNSAT
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/48 variables, 0/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 30 constraints, problems are : Problem set: 1 solved, 1 unsolved in 73 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 1 solved, 1 unsolved in 44 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 1/2 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 121ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 21 ms.
Support contains 1 out of 20 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 20/20 places, 28/28 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 28/28 (removed 0) transitions.
Running 16 sub problems to find dead transitions.
[2026-05-25 14:29:25] [INFO ] Invariant cache hit.
[2026-05-25 14:29:25] [INFO ] State equation strengthened by 8 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 16 unsolved in 144 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 16 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 1 (OVERLAPS) 4/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 3 (OVERLAPS) 28/44 variables, 16/17 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/44 variables, 8/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/44 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 6 (OVERLAPS) 4/48 variables, 4/29 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/48 variables, 16/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
At refinement iteration 9 (OVERLAPS) 0/48 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 16 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 45 constraints, problems are : Problem set: 0 solved, 16 unsolved in 234 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 16/16 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 382ms problems are : Problem set: 0 solved, 16 unsolved
Search for dead transitions found 0 dead transitions in 382ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 383 ms. Remains : 20/20 places, 28/28 transitions.
RANDOM walk for 40034 steps (8 resets) in 28 ms. (1380 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 30 ms. (1290 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2441349 steps, run timeout after 3001 ms. (steps per millisecond=813 ) properties seen :0 out of 1
Probabilistic random walk after 2441349 steps, saw 1660931 distinct states, run finished after 3001 ms. (steps per millisecond=813 ) properties seen :0
[2026-05-25 14:29:29] [INFO ] Invariant cache hit.
[2026-05-25 14:29:29] [INFO ] State equation strengthened by 8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/20 variables, 8/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/20 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 8/28 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/28 variables, 4/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 20/48 variables, 12/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 0/48 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 48/48 variables, and 29 constraints, problems are : Problem set: 0 solved, 1 unsolved in 35 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:29:29] [INFO ] Deduced a trap composed of 4 places in 26 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/8 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 12/20 variables, 8/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/20 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 8/28 variables, 4/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/28 variables, 4/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/28 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/48 variables, 12/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/48 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/48 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 48/48 variables, and 31 constraints, problems are : Problem set: 0 solved, 1 unsolved in 217 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 20/20 constraints, ReadFeed: 8/8 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 257ms problems are : Problem set: 0 solved, 1 unsolved
Finished Parikh walk after 594 steps, including 3 resets, run visited all 1 properties in 2 ms. (steps per millisecond=297 )
Parikh walk visited 1 properties in 2 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:[155] Max Struct:[204]
Ending property specific reduction for Murphy-PT-D3N050-UpperBounds-15 in 8826 ms.
[2026-05-25 14:29:29] [INFO ] Flatten gal took : 3 ms
[2026-05-25 14:29:29] [INFO ] Applying decomposition
[2026-05-25 14:29:29] [INFO ] Flatten gal took : 2 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph16243899396892673888.txt' '-o' '/tmp/graph16243899396892673888.bin' '-w' '/tmp/graph16243899396892673888.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph16243899396892673888.bin' '-l' '-1' '-v' '-w' '/tmp/graph16243899396892673888.weights' '-q' '0' '-e' '0.001'
[2026-05-25 14:29:29] [INFO ] Decomposing Gal with order
[2026-05-25 14:29:29] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 14:29:29] [INFO ] Flatten gal took : 2 ms
[2026-05-25 14:29:29] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 0 ms.
[2026-05-25 14:29:29] [INFO ] Time to serialize gal into /tmp/UpperBounds13231662704687870825.gal : 0 ms
[2026-05-25 14:29:29] [INFO ] Time to serialize properties into /tmp/UpperBounds10168005145149775180.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/UpperBounds13231662704687870825.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds10168005145149775180.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...285
Loading property file /tmp/UpperBounds10168005145149775180.prop.
Detected timeout of ITS tools.
[2026-05-25 14:50:47] [INFO ] Flatten gal took : 4 ms
[2026-05-25 14:50:47] [INFO ] Time to serialize gal into /tmp/UpperBounds11485610136238821099.gal : 0 ms
[2026-05-25 14:50:47] [INFO ] Time to serialize properties into /tmp/UpperBounds3760348774548178953.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/UpperBounds11485610136238821099.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds3760348774548178953.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/UpperBounds3760348774548178953.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,5.4071e+14,48.9609,716192,2,7445,5,2.50568e+06,6,0,139,2.74917e+06,0
Total reachable state count : 540710084330928

Verifying 4 reachability properties.
Min sum of variable value : 0
Maximum sum along a path : 199
Bounds property Murphy-PT-D3N050-UpperBounds-02 :0 <= p1_3 <= 199
FORMULA Murphy-PT-D3N050-UpperBounds-02 199 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-D3N050-UpperBounds-02,0,49.011,716192,1,0,7,2.50568e+06,9,1,380,2.74917e+06,4
Min sum of variable value : 0
Maximum sum along a path : 199
Bounds property Murphy-PT-D3N050-UpperBounds-06 :0 <= p1_2 <= 199
FORMULA Murphy-PT-D3N050-UpperBounds-06 199 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-D3N050-UpperBounds-06,0,49.1535,716192,1,0,8,2.50568e+06,10,1,609,2.74917e+06,5
Min sum of variable value : 0
Maximum sum along a path : 199
Bounds property Murphy-PT-D3N050-UpperBounds-14 :0 <= p1_1 <= 199
FORMULA Murphy-PT-D3N050-UpperBounds-14 199 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-D3N050-UpperBounds-14,0,49.3397,716192,1,0,9,2.50568e+06,11,1,844,2.74917e+06,6
Min sum of variable value : 0
Maximum sum along a path : 199
Bounds property Murphy-PT-D3N050-UpperBounds-15 :0 <= p1_4 <= 199
FORMULA Murphy-PT-D3N050-UpperBounds-15 199 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-D3N050-UpperBounds-15,0,49.3408,716192,1,0,10,2.50568e+06,12,1,1053,2.74917e+06,7
Total runtime 1558531 ms.

BK_STOP 1779720696580

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

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

Sequence of Actions to be Executed by the VM

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

set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="Murphy-PT-D3N050"
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-D3N050, 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-177969919700011"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Murphy-PT-D3N050.tgz
mv Murphy-PT-D3N050 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 ;