Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r159-tall-177961079700011.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)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is FunctionPointer-PT-b016, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r159-tall-177961079700011
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 772K
-rw-r--r-- 1 mcc users 6.0K Mar 7 07:31 CTLCardinality.txt
-rw-r--r-- 1 mcc users 61K Mar 7 07:31 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.6K Mar 7 07:31 CTLFireability.txt
-rw-r--r-- 1 mcc users 52K Mar 7 07:31 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.8K Mar 15 10:23 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 15 10:23 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 10:23 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 10:23 LTLFireability.xml
-rw-r--r-- 1 mcc users 5.8K Mar 7 07:31 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 49K Mar 7 07:31 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Mar 7 07:31 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 99K Mar 7 07:31 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:23 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 10:23 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 391K Mar 3 18:30 model.pnml

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

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

The expected result is a vector of positive values
NUM_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-00
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-01
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-02
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-03
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-04
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-05
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-06
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-07
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-08
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-09
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-10
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-11
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-12
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-13
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-14
FORMULA_NAME FunctionPointer-PT-b016-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779699920174

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FunctionPointer-PT-b016
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 09:05:21] [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 09:05:21] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 09:05:21] [INFO ] Load time of PNML (sax parser for PT used): 118 ms
[2026-05-25 09:05:21] [INFO ] Transformed 306 places.
[2026-05-25 09:05:21] [INFO ] Transformed 840 transitions.
[2026-05-25 09:05:21] [INFO ] Parsed PT model containing 306 places and 840 transitions and 3392 arcs in 219 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 8 ms.
Deduced a syphon composed of 84 places in 5 ms
Reduce places removed 84 places and 192 transitions.
FORMULA FunctionPointer-PT-b016-UpperBounds-00 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b016-UpperBounds-06 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b016-UpperBounds-08 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-b016-UpperBounds-14 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:05:21] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
// Phase 1: matrix 414 rows 222 cols
[2026-05-25 09:05:21] [INFO ] Computed 4 invariants in 18 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0] Max Struct:[1, 16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 16, 16]
FORMULA FunctionPointer-PT-b016-UpperBounds-13 16 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 10000 steps (9 resets) in 60 ms. (163 steps per ms)
FORMULA FunctionPointer-PT-b016-UpperBounds-15 16 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FunctionPointer-PT-b016-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 90008 steps (29 resets) in 125 ms. (714 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[13, 3, 5, 15, 3, 4, 6, 17, 1] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:05:22] [INFO ] Flow matrix only has 414 transitions (discarded 234 similar events)
[2026-05-25 09:05:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:22] [INFO ] [Real]Absence check using 3 positive place invariants in 6 ms returned sat
[2026-05-25 09:05:22] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:22] [INFO ] [Real]Absence check using state equation in 152 ms returned sat
[2026-05-25 09:05:22] [INFO ] State equation strengthened by 65 read => feed constraints.
[2026-05-25 09:05:22] [INFO ] [Real]Added 65 Read/Feed constraints in 16 ms returned sat
[2026-05-25 09:05:22] [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 09:05:22] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:05:22] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:22] [INFO ] [Nat]Absence check using state equation in 95 ms returned sat
[2026-05-25 09:05:22] [INFO ] [Nat]Added 65 Read/Feed constraints in 16 ms returned sat
[2026-05-25 09:05:22] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 62 ms.
[2026-05-25 09:05:22] [INFO ] Added : 2 causal constraints over 1 iterations in 138 ms. Result :sat
Minimization took 85 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:23] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Real]Absence check using state equation in 95 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Real]Added 65 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:05:23] [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 09:05:23] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Nat]Absence check using state equation in 88 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Nat]Added 65 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:05:23] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 55 ms.
[2026-05-25 09:05:23] [INFO ] Added : 2 causal constraints over 1 iterations in 116 ms. Result :sat
Minimization took 88 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:23] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Real]Absence check using state equation in 78 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Real]Added 65 Read/Feed constraints in 15 ms returned sat
[2026-05-25 09:05:23] [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 09:05:23] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Nat]Absence check using state equation in 72 ms returned sat
[2026-05-25 09:05:23] [INFO ] [Nat]Added 65 Read/Feed constraints in 15 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:23] [INFO ] Deduced a trap composed of 21 places in 133 ms of which 8 ms to minimize.
[2026-05-25 09:05:23] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 161 ms
[2026-05-25 09:05:24] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 59 ms.
[2026-05-25 09:05:24] [INFO ] Added : 2 causal constraints over 1 iterations in 107 ms. Result :sat
Minimization took 77 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:24] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:05:24] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:24] [INFO ] [Real]Absence check using state equation in 123 ms returned sat
[2026-05-25 09:05:24] [INFO ] [Real]Added 65 Read/Feed constraints in 13 ms returned sat
[2026-05-25 09:05:24] [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 09:05:24] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:24] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:24] [INFO ] [Nat]Absence check using state equation in 99 ms returned sat
[2026-05-25 09:05:24] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:24] [INFO ] Deduced a trap composed of 21 places in 132 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:24] [INFO ] Deduced a trap composed of 21 places in 139 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:25] [INFO ] Deduced a trap composed of 51 places in 128 ms of which 14 ms to minimize.
[2026-05-25 09:05:25] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 460 ms
[2026-05-25 09:05:25] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 37 ms.
[2026-05-25 09:05:25] [INFO ] Added : 2 causal constraints over 1 iterations in 134 ms. Result :sat
Minimization took 104 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:25] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:25] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:25] [INFO ] [Real]Absence check using state equation in 69 ms returned sat
[2026-05-25 09:05:25] [INFO ] [Real]Added 65 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:05:25] [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 09:05:25] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:25] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:25] [INFO ] [Nat]Absence check using state equation in 73 ms returned sat
[2026-05-25 09:05:25] [INFO ] [Nat]Added 65 Read/Feed constraints in 13 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:25] [INFO ] Deduced a trap composed of 21 places in 196 ms of which 8 ms to minimize.
[2026-05-25 09:05:25] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 218 ms
[2026-05-25 09:05:25] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 39 ms.
[2026-05-25 09:05:25] [INFO ] Added : 2 causal constraints over 1 iterations in 93 ms. Result :sat
Minimization took 79 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:26] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Real]Absence check using state equation in 75 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Real]Added 65 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:05:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Nat]Absence check using state equation in 79 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 09:05:26] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 29 ms.
[2026-05-25 09:05:26] [INFO ] Added : 1 causal constraints over 1 iterations in 77 ms. Result :sat
Minimization took 79 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:26] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Real]Absence check using state equation in 78 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Real]Added 65 Read/Feed constraints in 9 ms returned sat
[2026-05-25 09:05:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Nat]Absence check using state equation in 81 ms returned sat
[2026-05-25 09:05:26] [INFO ] [Nat]Added 65 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:05:26] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 28 ms.
[2026-05-25 09:05:26] [INFO ] Added : 2 causal constraints over 1 iterations in 71 ms. Result :sat
Minimization took 76 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:27] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Real]Absence check using state equation in 80 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Real]Added 65 Read/Feed constraints in 14 ms returned sat
[2026-05-25 09:05:27] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:27] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Nat]Absence check using state equation in 65 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Nat]Added 65 Read/Feed constraints in 29 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:27] [INFO ] Deduced a trap composed of 21 places in 116 ms of which 13 ms to minimize.
[2026-05-25 09:05:27] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 145 ms
[2026-05-25 09:05:27] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 30 ms.
[2026-05-25 09:05:27] [INFO ] Added : 2 causal constraints over 1 iterations in 77 ms. Result :sat
Minimization took 82 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:27] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Real]Absence check using state equation in 70 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Real]Added 65 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:05:27] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:05:27] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Nat]Absence check using state equation in 78 ms returned sat
[2026-05-25 09:05:27] [INFO ] [Nat]Added 65 Read/Feed constraints in 9 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:05:27] [INFO ] Deduced a trap composed of 21 places in 109 ms of which 7 ms to minimize.
[2026-05-25 09:05:27] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 131 ms
[2026-05-25 09:05:28] [INFO ] Computed and/alt/rep : 57/91/57 causal constraints (skipped 355 transitions) in 23 ms.
[2026-05-25 09:05:28] [INFO ] Added : 3 causal constraints over 1 iterations in 69 ms. Result :sat
Minimization took 77 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[13, 3, 5, 15, 3, 4, 6, 17, 1] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[13, 3, 5, 15, 3, 4, 6, 17, 1] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 9 out of 222 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 222/222 places, 648/648 transitions.
Graph (complete) has 932 edges and 222 vertex of which 195 are kept as prefixes of interest. Removing 27 places using SCC suffix rule.2 ms
Discarding 27 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 37 transitions
Reduce isomorphic transitions removed 37 transitions.
Iterating post reduction 0 with 37 rules applied. Total rules applied 38 place count 195 transition count 611
Discarding 26 places :
Symmetric choice reduction at 1 with 26 rule applications. Total rules 64 place count 169 transition count 469
Iterating global reduction 1 with 26 rules applied. Total rules applied 90 place count 169 transition count 469
Ensure Unique test removed 38 transitions
Reduce isomorphic transitions removed 38 transitions.
Iterating post reduction 1 with 38 rules applied. Total rules applied 128 place count 169 transition count 431
Discarding 14 places :
Symmetric choice reduction at 2 with 14 rule applications. Total rules 142 place count 155 transition count 403
Iterating global reduction 2 with 14 rules applied. Total rules applied 156 place count 155 transition count 403
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 2 with 8 rules applied. Total rules applied 164 place count 155 transition count 395
Discarding 6 places :
Symmetric choice reduction at 3 with 6 rule applications. Total rules 170 place count 149 transition count 383
Iterating global reduction 3 with 6 rules applied. Total rules applied 176 place count 149 transition count 383
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 181 place count 144 transition count 363
Iterating global reduction 3 with 5 rules applied. Total rules applied 186 place count 144 transition count 363
Discarding 5 places :
Symmetric choice reduction at 3 with 5 rule applications. Total rules 191 place count 139 transition count 353
Iterating global reduction 3 with 5 rules applied. Total rules applied 196 place count 139 transition count 353
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 200 place count 135 transition count 337
Iterating global reduction 3 with 4 rules applied. Total rules applied 204 place count 135 transition count 337
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 208 place count 131 transition count 321
Iterating global reduction 3 with 4 rules applied. Total rules applied 212 place count 131 transition count 321
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 216 place count 127 transition count 313
Iterating global reduction 3 with 4 rules applied. Total rules applied 220 place count 127 transition count 313
Discarding 4 places :
Symmetric choice reduction at 3 with 4 rule applications. Total rules 224 place count 123 transition count 305
Iterating global reduction 3 with 4 rules applied. Total rules applied 228 place count 123 transition count 305
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 231 place count 120 transition count 299
Iterating global reduction 3 with 3 rules applied. Total rules applied 234 place count 120 transition count 299
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 237 place count 117 transition count 293
Iterating global reduction 3 with 3 rules applied. Total rules applied 240 place count 117 transition count 293
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 243 place count 114 transition count 287
Iterating global reduction 3 with 3 rules applied. Total rules applied 246 place count 114 transition count 287
Drop transitions (Redundant composition of simpler transitions.) removed 8 transitions
Redundant transition composition rules discarded 8 transitions
Iterating global reduction 3 with 8 rules applied. Total rules applied 254 place count 114 transition count 279
Applied a total of 254 rules in 112 ms. Remains 114 /222 variables (removed 108) and now considering 279/648 (removed 369) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 119 ms. Remains : 114/222 places, 279/648 transitions.
[2026-05-25 09:05:28] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 39=1, 44=1, 87=1, 125=1, 172=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 2 ms.
This minimized invariant on transitions {34=1, 92=1, 146=1, 180=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 7 resets, run finished after 106 ms. (steps per millisecond=94 ) properties (out of 9) seen :[3, 2, 5, 4, 3, 6, 3, 2, 25]
Current structural bounds on expressions (after cover walk) : Max Seen:[13, 3, 5, 15, 3, 6, 6, 17, 25] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:05:28] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
// Phase 1: matrix 183 rows 114 cols
[2026-05-25 09:05:28] [INFO ] Computed 2 invariants in 6 ms
Current structural bounds on expressions (after invariants) : Max Seen:[13, 3, 5, 15, 3, 6, 6, 17, 25] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1719 ms. (581 steps per ms)
BEST_FIRST walk for 9000009 steps (60 resets) in 7543 ms. (1193 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[13, 173, 432, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:05:37] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:05:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:37] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:37] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:37] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:37] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:05:37] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:37] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:37] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:05:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:05:38] [INFO ] Added : 1 causal constraints over 1 iterations in 29 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:05:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:05:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 18 ms.
[2026-05-25 09:05:38] [INFO ] Added : 13 causal constraints over 4 iterations in 74 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:05:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:05:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:05:38] [INFO ] Added : 11 causal constraints over 3 iterations in 50 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 4 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:05:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:05:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:05:38] [INFO ] Added : 2 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:05:38] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:05:39] [INFO ] Added : 25 causal constraints over 6 iterations in 89 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using state equation in 39 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 12 ms.
[2026-05-25 09:05:39] [INFO ] Added : 6 causal constraints over 3 iterations in 62 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:05:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:05:39] [INFO ] Added : 20 causal constraints over 5 iterations in 75 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:05:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:05:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:05:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 11 ms.
[2026-05-25 09:05:39] [INFO ] Added : 6 causal constraints over 2 iterations in 39 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:40] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:05:40] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:05:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:05:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:05:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:05:40] [INFO ] [Nat]Absence check using state equation in 42 ms returned sat
[2026-05-25 09:05:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:05:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 12 ms.
[2026-05-25 09:05:40] [INFO ] Added : 22 causal constraints over 5 iterations in 73 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[13, 173, 432, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[13, 173, 432, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 9 out of 114 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 20 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 114/114 places, 279/279 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 11 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
[2026-05-25 09:05:50] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:05:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:05:50] [INFO ] Implicit Places using invariants in 92 ms returned []
[2026-05-25 09:05:50] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:05:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:05:50] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:05:50] [INFO ] Implicit Places using invariants and state equation in 242 ms returned []
Implicit Place search using SMT with State Equation took 353 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:05:50] [INFO ] Redundant transitions in 19 ms returned []
Running 277 sub problems to find dead transitions.
[2026-05-25 09:05:50] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:05:50] [INFO ] Invariant cache hit.
[2026-05-25 09:05:50] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/297 variables, 1/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
No progress, stopping.
After SMT solving in domain Real declared 297/297 variables, and 149 constraints, problems are : Problem set: 0 solved, 277 unsolved in 8446 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 32/180 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:04] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:06:06] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/296 variables, 2/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/296 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 1/297 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/297 variables, 245/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/297 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 297/297 variables, and 428 constraints, problems are : Problem set: 0 solved, 277 unsolved in 30033 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 38673ms problems are : Problem set: 0 solved, 277 unsolved
Search for dead transitions found 0 dead transitions in 38680ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 39087 ms. Remains : 114/114 places, 279/279 transitions.
[2026-05-25 09:06:29] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 39=1, 44=1, 87=1, 125=1, 172=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {34=1, 92=1, 146=1, 180=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 4 resets, run finished after 102 ms. (steps per millisecond=98 ) properties (out of 9) seen :[2, 2, 6, 2, 3, 5, 1, 4, 50]
Current structural bounds on expressions (after cover walk) : Max Seen:[13, 173, 432, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:06:29] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:06:29] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[13, 173, 432, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1517 ms. (658 steps per ms)
BEST_FIRST walk for 9000009 steps (39 resets) in 7571 ms. (1188 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[13, 173, 771, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:06:38] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:06:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:06:39] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:06:39] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:06:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:06:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:06:39] [INFO ] Added : 1 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:06:39] [INFO ] Added : 13 causal constraints over 4 iterations in 62 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:06:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:06:39] [INFO ] Added : 11 causal constraints over 3 iterations in 48 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:06:39] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 11 ms.
[2026-05-25 09:06:40] [INFO ] Added : 25 causal constraints over 6 iterations in 100 ms. Result :sat
Minimization took 38 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:06:40] [INFO ] Added : 6 causal constraints over 3 iterations in 45 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:06:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:06:40] [INFO ] Added : 20 causal constraints over 5 iterations in 72 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:06:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:06:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:06:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:06:40] [INFO ] Added : 6 causal constraints over 2 iterations in 38 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:41] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:06:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:41] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:06:41] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:06:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:06:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:06:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:06:41] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:06:41] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:06:41] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:06:41] [INFO ] Added : 22 causal constraints over 5 iterations in 72 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[13, 173, 771, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[13, 173, 771, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 9 out of 114 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 20 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 26 ms. Remains : 114/114 places, 279/279 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 8 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
[2026-05-25 09:06:51] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:06:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:06:51] [INFO ] Implicit Places using invariants in 136 ms returned []
[2026-05-25 09:06:51] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:06:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:06:51] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:06:51] [INFO ] Implicit Places using invariants and state equation in 240 ms returned []
Implicit Place search using SMT with State Equation took 393 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:06:51] [INFO ] Redundant transitions in 3 ms returned []
Running 277 sub problems to find dead transitions.
[2026-05-25 09:06:51] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:06:51] [INFO ] Invariant cache hit.
[2026-05-25 09:06:51] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/297 variables, 1/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
No progress, stopping.
After SMT solving in domain Real declared 297/297 variables, and 149 constraints, problems are : Problem set: 0 solved, 277 unsolved in 8131 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 32/180 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:04] [INFO ] Deduced a trap along path composed of 3 places in 35 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:07:06] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 2 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/296 variables, 2/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/296 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 1/297 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/297 variables, 245/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/297 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 297/297 variables, and 428 constraints, problems are : Problem set: 0 solved, 277 unsolved in 30020 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 38268ms problems are : Problem set: 0 solved, 277 unsolved
Search for dead transitions found 0 dead transitions in 38271ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38683 ms. Remains : 114/114 places, 279/279 transitions.
[2026-05-25 09:07:29] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 39=1, 44=1, 87=1, 125=1, 172=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {34=1, 92=1, 146=1, 180=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 37 ms. (steps per millisecond=270 ) properties (out of 9) seen :[2, 3, 5, 4, 3, 10, 2, 0, 28]
Current structural bounds on expressions (after cover walk) : Max Seen:[13, 173, 771, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:07:30] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:07:30] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[13, 173, 771, 15, 743, 455, 112, 17, 3042] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1543 ms. (647 steps per ms)
BEST_FIRST walk for 9000009 steps (30 resets) in 7302 ms. (1232 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[13, 173, 1301, 15, 743, 455, 204, 17, 8075] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:07:38] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:07:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:07:39] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:07:39] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:07:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:07:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:07:39] [INFO ] Added : 1 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:07:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:07:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:07:39] [INFO ] Added : 13 causal constraints over 4 iterations in 65 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using state equation in 46 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:07:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using state equation in 48 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:07:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:07:39] [INFO ] Added : 11 causal constraints over 3 iterations in 48 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Real]Added 33 Read/Feed constraints in 16 ms returned sat
[2026-05-25 09:07:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using state equation in 42 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:07:40] [INFO ] Added : 2 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Added 33 Read/Feed constraints in 15 ms returned sat
[2026-05-25 09:07:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:07:40] [INFO ] Added : 25 causal constraints over 6 iterations in 95 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:07:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:07:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:07:40] [INFO ] Added : 6 causal constraints over 3 iterations in 47 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Real]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:07:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:07:40] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:40] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:07:40] [INFO ] Added : 20 causal constraints over 5 iterations in 69 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:41] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:07:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Nat]Added 33 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:07:41] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 28 ms.
[2026-05-25 09:07:41] [INFO ] Added : 6 causal constraints over 2 iterations in 62 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:41] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:07:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Nat]Absence check using state equation in 46 ms returned sat
[2026-05-25 09:07:41] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:07:41] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:07:41] [INFO ] Added : 22 causal constraints over 5 iterations in 81 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[13, 173, 1301, 15, 743, 455, 204, 17, 8075] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 8075] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 9 out of 114 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 13 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13 ms. Remains : 114/114 places, 279/279 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 8 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
[2026-05-25 09:08:05] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:08:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:08:05] [INFO ] Implicit Places using invariants in 177 ms returned []
[2026-05-25 09:08:05] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:08:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:08:05] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:08:05] [INFO ] Implicit Places using invariants and state equation in 336 ms returned []
Implicit Place search using SMT with State Equation took 532 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:08:05] [INFO ] Redundant transitions in 2 ms returned []
Running 277 sub problems to find dead transitions.
[2026-05-25 09:08:05] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:08:05] [INFO ] Invariant cache hit.
[2026-05-25 09:08:05] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/297 variables, 1/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
No progress, stopping.
After SMT solving in domain Real declared 297/297 variables, and 149 constraints, problems are : Problem set: 0 solved, 277 unsolved in 8188 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 32/180 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:08:18] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:08:20] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/296 variables, 2/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/296 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 1/297 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/297 variables, 245/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/297 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 297/297 variables, and 428 constraints, problems are : Problem set: 0 solved, 277 unsolved in 30021 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 38309ms problems are : Problem set: 0 solved, 277 unsolved
Search for dead transitions found 0 dead transitions in 38310ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38883 ms. Remains : 114/114 places, 279/279 transitions.
[2026-05-25 09:08:44] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 39=1, 44=1, 87=1, 125=1, 172=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {34=1, 92=1, 146=1, 180=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 3 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 9) seen :[3, 2, 8, 2, 5, 4, 4, 3, 30]
Current structural bounds on expressions (after cover walk) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 8075] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:08:44] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:08:44] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 8075] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000002 steps (2 resets) in 1542 ms. (648 steps per ms)
BEST_FIRST walk for 9000009 steps (62 resets) in 7355 ms. (1223 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 8075] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:08:53] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:08:53] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:53] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:08:53] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:08:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:08:53] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:08:53] [INFO ] Added : 1 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:08:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:08:53] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:08:53] [INFO ] Added : 13 causal constraints over 4 iterations in 61 ms. Result :sat
Minimization took 46 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:08:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 09:08:53] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:08:53] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:08:53] [INFO ] Added : 11 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:08:54] [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 09:08:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:08:54] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:08:54] [INFO ] Added : 2 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:08:54] [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 09:08:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:08:54] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:08:54] [INFO ] Added : 25 causal constraints over 6 iterations in 86 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:08:54] [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 09:08:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:08:54] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:08:54] [INFO ] Added : 6 causal constraints over 3 iterations in 46 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:08:54] [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 09:08:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:54] [INFO ] [Nat]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:08:54] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:08:55] [INFO ] Added : 20 causal constraints over 5 iterations in 68 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:55] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:08:55] [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 09:08:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Nat]Added 33 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:08:55] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:08:55] [INFO ] Added : 6 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:08:55] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:08:55] [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 09:08:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:08:55] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:08:55] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:08:55] [INFO ] Added : 22 causal constraints over 5 iterations in 71 ms. Result :sat
Minimization took 36 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 8075] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 9 out of 114 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 6 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 114/114 places, 279/279 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 5 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
[2026-05-25 09:09:27] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:09:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:09:27] [INFO ] Implicit Places using invariants in 137 ms returned []
[2026-05-25 09:09:27] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:09:27] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:09:28] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:09:28] [INFO ] Implicit Places using invariants and state equation in 242 ms returned []
Implicit Place search using SMT with State Equation took 394 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:09:28] [INFO ] Redundant transitions in 1 ms returned []
Running 277 sub problems to find dead transitions.
[2026-05-25 09:09:28] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:09:28] [INFO ] Invariant cache hit.
[2026-05-25 09:09:28] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/297 variables, 1/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
No progress, stopping.
After SMT solving in domain Real declared 297/297 variables, and 149 constraints, problems are : Problem set: 0 solved, 277 unsolved in 8063 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 32/180 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:40] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:09:42] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/296 variables, 2/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/296 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 1/297 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/297 variables, 245/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/297 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 297/297 variables, and 428 constraints, problems are : Problem set: 0 solved, 277 unsolved in 30019 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 38164ms problems are : Problem set: 0 solved, 277 unsolved
Search for dead transitions found 0 dead transitions in 38165ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38570 ms. Remains : 114/114 places, 279/279 transitions.
[2026-05-25 09:10:06] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 39=1, 44=1, 87=1, 125=1, 172=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {34=1, 92=1, 146=1, 180=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 3 resets, run finished after 37 ms. (steps per millisecond=270 ) properties (out of 9) seen :[3, 2, 7, 4, 3, 6, 2, 2, 29]
Current structural bounds on expressions (after cover walk) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:10:06] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:10:06] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[14, 173, 1301, 15, 743, 455, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (3 resets) in 1474 ms. (677 steps per ms)
BEST_FIRST walk for 9000008 steps (39 resets) in 7172 ms. (1254 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[14, 173, 1301, 15, 743, 538, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:10:15] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:10:15] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:10:15] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:10:15] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:10:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:10:15] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:10:15] [INFO ] Added : 1 causal constraints over 1 iterations in 26 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using 1 positive place invariants in 4 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:10:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:10:15] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:10:15] [INFO ] Added : 13 causal constraints over 4 iterations in 73 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Real]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:10:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:10:15] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:10:15] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:10:15] [INFO ] Added : 11 causal constraints over 3 iterations in 49 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:10:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:10:16] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:10:16] [INFO ] Added : 2 causal constraints over 1 iterations in 27 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:10:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:10:16] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:10:16] [INFO ] Added : 25 causal constraints over 6 iterations in 88 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using state equation in 42 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:10:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:10:16] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:10:16] [INFO ] Added : 6 causal constraints over 3 iterations in 47 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Real]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:10:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:10:16] [INFO ] [Nat]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:10:16] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 24 ms.
[2026-05-25 09:10:17] [INFO ] Added : 20 causal constraints over 5 iterations in 88 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:17] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:10:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:17] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Nat]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:10:17] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:10:17] [INFO ] Added : 6 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:17] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:10:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:10:17] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:10:17] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:10:17] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:10:17] [INFO ] Added : 22 causal constraints over 5 iterations in 71 ms. Result :sat
Minimization took 35 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[14, 173, 1301, 15, 743, 538, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[14, 173, 1301, 15, 743, 538, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 9 out of 114 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 6 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 114/114 places, 279/279 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 6 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
[2026-05-25 09:10:49] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:10:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:10:49] [INFO ] Implicit Places using invariants in 88 ms returned []
[2026-05-25 09:10:49] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:10:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:10:49] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:10:49] [INFO ] Implicit Places using invariants and state equation in 234 ms returned []
Implicit Place search using SMT with State Equation took 324 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:10:49] [INFO ] Redundant transitions in 1 ms returned []
Running 277 sub problems to find dead transitions.
[2026-05-25 09:10:49] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:10:49] [INFO ] Invariant cache hit.
[2026-05-25 09:10:49] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/297 variables, 1/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
No progress, stopping.
After SMT solving in domain Real declared 297/297 variables, and 149 constraints, problems are : Problem set: 0 solved, 277 unsolved in 8086 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 32/180 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:11:02] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:11:04] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/296 variables, 2/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/296 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 1/297 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/297 variables, 245/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/297 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 297/297 variables, and 428 constraints, problems are : Problem set: 0 solved, 277 unsolved in 30020 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 38191ms problems are : Problem set: 0 solved, 277 unsolved
Search for dead transitions found 0 dead transitions in 38193ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38531 ms. Remains : 114/114 places, 279/279 transitions.
[2026-05-25 09:11:28] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 39=1, 44=1, 87=1, 125=1, 172=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {34=1, 92=1, 146=1, 180=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 4 resets, run finished after 42 ms. (steps per millisecond=238 ) properties (out of 9) seen :[2, 3, 7, 2, 4, 6, 2, 5, 43]
Current structural bounds on expressions (after cover walk) : Max Seen:[14, 173, 1301, 15, 743, 538, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:11:28] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:11:28] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[14, 173, 1301, 15, 743, 538, 204, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000001 steps (2 resets) in 1381 ms. (723 steps per ms)
BEST_FIRST walk for 9000009 steps (37 resets) in 7466 ms. (1205 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[15, 173, 1301, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:11:37] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:11:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:11:37] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:11:37] [INFO ] [Real]Added 33 Read/Feed constraints in 14 ms returned sat
[2026-05-25 09:11:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:11:37] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:11:37] [INFO ] Added : 1 causal constraints over 1 iterations in 29 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:11:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:11:37] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:11:37] [INFO ] Added : 13 causal constraints over 4 iterations in 61 ms. Result :sat
Minimization took 33 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:11:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:11:37] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:11:37] [INFO ] Added : 11 causal constraints over 3 iterations in 48 ms. Result :sat
Minimization took 34 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:11:37] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:11:37] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:11:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:11:38] [INFO ] Added : 6 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:11:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:11:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:11:38] [INFO ] Added : 25 causal constraints over 6 iterations in 86 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:11:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using state equation in 39 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:11:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:11:38] [INFO ] Added : 6 causal constraints over 3 iterations in 56 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:11:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:11:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:11:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:11:38] [INFO ] Added : 20 causal constraints over 5 iterations in 79 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:11:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:11:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:11:39] [INFO ] Added : 6 causal constraints over 2 iterations in 36 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:39] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:11:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:11:39] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Nat]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:11:39] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:11:39] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:11:39] [INFO ] Added : 22 causal constraints over 5 iterations in 74 ms. Result :sat
Minimization took 37 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[15, 173, 1301, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15, 173, 1301, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 9 out of 114 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 6 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 114/114 places, 279/279 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Applied a total of 0 rules in 5 ms. Remains 114 /114 variables (removed 0) and now considering 279/279 (removed 0) transitions.
[2026-05-25 09:12:11] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:12:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:12:12] [INFO ] Implicit Places using invariants in 85 ms returned []
[2026-05-25 09:12:12] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:12:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:12:12] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:12:12] [INFO ] Implicit Places using invariants and state equation in 219 ms returned []
Implicit Place search using SMT with State Equation took 304 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:12:12] [INFO ] Redundant transitions in 1 ms returned []
Running 277 sub problems to find dead transitions.
[2026-05-25 09:12:12] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:12:12] [INFO ] Invariant cache hit.
[2026-05-25 09:12:12] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/297 variables, 1/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 0/297 variables, 0/149 constraints. Problems are: Problem set: 0 solved, 277 unsolved
No progress, stopping.
After SMT solving in domain Real declared 297/297 variables, and 149 constraints, problems are : Problem set: 0 solved, 277 unsolved in 7957 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 3 (OVERLAPS) 183/296 variables, 113/115 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/296 variables, 33/148 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/296 variables, 32/180 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:24] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:12:26] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 0 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/296 variables, 2/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/296 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 8 (OVERLAPS) 1/297 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/297 variables, 245/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/297 variables, 0/428 constraints. Problems are: Problem set: 0 solved, 277 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 297/297 variables, and 428 constraints, problems are : Problem set: 0 solved, 277 unsolved in 30023 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 114/114 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 277/277 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 38057ms problems are : Problem set: 0 solved, 277 unsolved
Search for dead transitions found 0 dead transitions in 38058ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38373 ms. Remains : 114/114 places, 279/279 transitions.
[2026-05-25 09:12:50] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 39=1, 44=1, 87=1, 125=1, 172=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {34=1, 92=1, 146=1, 180=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 3 resets, run finished after 100 ms. (steps per millisecond=100 ) properties (out of 9) seen :[4, 3, 2147483647, 1, 5, 0, 3, 1, 50]
Current structural bounds on expressions (after cover walk) : Max Seen:[15, 173, +inf, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:12:50] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:12:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[15, 173, +inf, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000002 steps (2 resets) in 1291 ms. (773 steps per ms)
FORMULA FunctionPointer-PT-b016-UpperBounds-04 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 8000008 steps (33 resets) in 6468 ms. (1236 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[15, 173, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:12:58] [INFO ] Flow matrix only has 183 transitions (discarded 96 similar events)
[2026-05-25 09:12:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:12:58] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:12:58] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:12:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:12:58] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 11 ms.
[2026-05-25 09:12:58] [INFO ] Added : 1 causal constraints over 1 iterations in 31 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:12:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:12:58] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 10 ms.
[2026-05-25 09:12:58] [INFO ] Added : 13 causal constraints over 4 iterations in 62 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:12:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:12:58] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:12:59] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:12:59] [INFO ] Added : 6 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:12:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:12:59] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 17 ms.
[2026-05-25 09:12:59] [INFO ] Added : 25 causal constraints over 6 iterations in 125 ms. Result :sat
Minimization took 38 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:12:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:12:59] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:12:59] [INFO ] Added : 6 causal constraints over 3 iterations in 52 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Real]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:12:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:12:59] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:12:59] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:12:59] [INFO ] Added : 20 causal constraints over 5 iterations in 70 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:00] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Real]Added 33 Read/Feed constraints in 10 ms returned sat
[2026-05-25 09:13:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Nat]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:13:00] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 9 ms.
[2026-05-25 09:13:00] [INFO ] Added : 6 causal constraints over 2 iterations in 38 ms. Result :sat
Minimization took 30 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:00] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Real]Added 33 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:13:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:13:00] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:00] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 126 transitions) in 8 ms.
[2026-05-25 09:13:00] [INFO ] Added : 22 causal constraints over 5 iterations in 71 ms. Result :sat
Minimization took 36 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[15, 173, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15, 173, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 114 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 114/114 places, 279/279 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 113 transition count 277
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 113 transition count 277
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 6 place count 113 transition count 273
Applied a total of 6 rules in 10 ms. Remains 113 /114 variables (removed 1) and now considering 273/279 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 113/114 places, 273/279 transitions.
[2026-05-25 09:13:32] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 29=1, 84=1, 101=1, 138=1, 173=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {31=1, 86=1, 140=1, 173=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 4 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 8) seen :[3, 4, 3, 3, 6, 3, 4, 49]
Current structural bounds on expressions (after cover walk) : Max Seen:[15, 173, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:13:33] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:13:33] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[15, 173, 20, 743, 601, 288, 17, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 1170 ms. (853 steps per ms)
BEST_FIRST walk for 8000008 steps (55 resets) in 6572 ms. (1217 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:13:40] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:13:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:40] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:40] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:40] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:13:40] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:13:40] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:13:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:40] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:40] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:41] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 12 ms.
[2026-05-25 09:13:41] [INFO ] Added : 1 causal constraints over 1 iterations in 30 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:13:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:13:41] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:13:41] [INFO ] Added : 14 causal constraints over 4 iterations in 77 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:13:41] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:13:41] [INFO ] Added : 6 causal constraints over 3 iterations in 42 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:13:41] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:13:41] [INFO ] Added : 21 causal constraints over 5 iterations in 67 ms. Result :sat
Minimization took 38 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:13:41] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 13 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:42] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:13:42] [INFO ] Added : 12 causal constraints over 5 iterations in 55 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:42] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:13:42] [INFO ] Added : 19 causal constraints over 5 iterations in 70 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:13:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:13:42] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:13:42] [INFO ] Added : 6 causal constraints over 2 iterations in 52 ms. Result :sat
Minimization took 28 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:13:42] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:13:42] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:13:43] [INFO ] Added : 26 causal constraints over 6 iterations in 78 ms. Result :sat
Minimization took 39 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Applied a total of 0 rules in 9 ms. Remains 113 /113 variables (removed 0) and now considering 273/273 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 113/113 places, 273/273 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Applied a total of 0 rules in 18 ms. Remains 113 /113 variables (removed 0) and now considering 273/273 (removed 0) transitions.
[2026-05-25 09:14:14] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:14:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:14:14] [INFO ] Implicit Places using invariants in 84 ms returned []
[2026-05-25 09:14:14] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:14:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:14:14] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:14:14] [INFO ] Implicit Places using invariants and state equation in 239 ms returned []
Implicit Place search using SMT with State Equation took 344 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:14:14] [INFO ] Redundant transitions in 1 ms returned []
Running 271 sub problems to find dead transitions.
[2026-05-25 09:14:14] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:14:14] [INFO ] Invariant cache hit.
[2026-05-25 09:14:14] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 3 (OVERLAPS) 180/292 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/292 variables, 33/147 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/292 variables, 0/147 constraints. Problems are: Problem set: 0 solved, 271 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/293 variables, 1/148 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 8 (OVERLAPS) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 271 unsolved
No progress, stopping.
After SMT solving in domain Real declared 293/293 variables, and 148 constraints, problems are : Problem set: 0 solved, 271 unsolved in 7836 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 271/271 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 271 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 3 (OVERLAPS) 180/292 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/292 variables, 33/147 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/292 variables, 32/179 constraints. Problems are: Problem set: 0 solved, 271 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:28] [INFO ] Deduced a trap along path composed of 3 places in 32 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:28] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:14:28] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/292 variables, 3/182 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/292 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 8 (OVERLAPS) 1/293 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/293 variables, 239/422 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/293 variables, 0/422 constraints. Problems are: Problem set: 0 solved, 271 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 293/293 variables, and 422 constraints, problems are : Problem set: 0 solved, 271 unsolved in 30018 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 271/271 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 37938ms problems are : Problem set: 0 solved, 271 unsolved
Search for dead transitions found 0 dead transitions in 37940ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38316 ms. Remains : 113/113 places, 273/273 transitions.
[2026-05-25 09:14:52] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 29=1, 84=1, 101=1, 138=1, 173=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 86=1, 140=1, 173=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 5 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 8) seen :[2, 2, 2, 3, 8, 3, 2, 17]
Current structural bounds on expressions (after cover walk) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:14:52] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:14:52] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000003 steps (2 resets) in 1448 ms. (690 steps per ms)
BEST_FIRST walk for 8000008 steps (40 resets) in 6507 ms. (1229 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 09:15:00] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:15:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:15:00] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:15:00] [INFO ] [Real]Added 33 Read/Feed constraints in 16 ms returned sat
[2026-05-25 09:15:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:15:00] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:15:00] [INFO ] Added : 1 causal constraints over 1 iterations in 25 ms. Result :sat
Minimization took 47 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Real]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Real]Added 33 Read/Feed constraints in 9 ms returned sat
[2026-05-25 09:15:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Nat]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:15:00] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:15:00] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 11 ms.
[2026-05-25 09:15:01] [INFO ] Added : 14 causal constraints over 4 iterations in 60 ms. Result :sat
Minimization took 31 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:15:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:15:01] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:15:01] [INFO ] Added : 6 causal constraints over 3 iterations in 41 ms. Result :sat
Minimization took 29 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:15:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using state equation in 30 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:15:01] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:15:01] [INFO ] Added : 21 causal constraints over 5 iterations in 67 ms. Result :sat
Minimization took 36 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:15:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Nat]Added 33 Read/Feed constraints in 16 ms returned sat
[2026-05-25 09:15:01] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:15:01] [INFO ] Added : 12 causal constraints over 5 iterations in 55 ms. Result :sat
Minimization took 35 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:15:01] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:15:01] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using state equation in 44 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:15:02] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:15:02] [INFO ] Added : 19 causal constraints over 5 iterations in 71 ms. Result :sat
Minimization took 32 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:02] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Real]Added 33 Read/Feed constraints in 9 ms returned sat
[2026-05-25 09:15:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 3 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:15:02] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:15:02] [INFO ] Added : 6 causal constraints over 2 iterations in 34 ms. Result :sat
Minimization took 27 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:02] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Real]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Real]Added 33 Read/Feed constraints in 8 ms returned sat
[2026-05-25 09:15:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:15:02] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:15:02] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:15:02] [INFO ] Added : 26 causal constraints over 6 iterations in 76 ms. Result :sat
Minimization took 37 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Applied a total of 0 rules in 5 ms. Remains 113 /113 variables (removed 0) and now considering 273/273 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 113/113 places, 273/273 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Applied a total of 0 rules in 5 ms. Remains 113 /113 variables (removed 0) and now considering 273/273 (removed 0) transitions.
[2026-05-25 09:15:33] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:15:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:33] [INFO ] Implicit Places using invariants in 87 ms returned []
[2026-05-25 09:15:33] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:15:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:15:34] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:15:34] [INFO ] Implicit Places using invariants and state equation in 261 ms returned []
Implicit Place search using SMT with State Equation took 373 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:15:34] [INFO ] Redundant transitions in 1 ms returned []
Running 271 sub problems to find dead transitions.
[2026-05-25 09:15:34] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:15:34] [INFO ] Invariant cache hit.
[2026-05-25 09:15:34] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 3 (OVERLAPS) 180/292 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/292 variables, 33/147 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/292 variables, 0/147 constraints. Problems are: Problem set: 0 solved, 271 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/293 variables, 1/148 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 8 (OVERLAPS) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 271 unsolved
No progress, stopping.
After SMT solving in domain Real declared 293/293 variables, and 148 constraints, problems are : Problem set: 0 solved, 271 unsolved in 7837 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 271/271 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 271 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/112 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/112 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/112 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 3 (OVERLAPS) 180/292 variables, 112/114 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/292 variables, 33/147 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/292 variables, 32/179 constraints. Problems are: Problem set: 0 solved, 271 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:15:47] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:15:47] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:15:47] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 5 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/292 variables, 3/182 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/292 variables, 0/182 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 8 (OVERLAPS) 1/293 variables, 1/183 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/293 variables, 239/422 constraints. Problems are: Problem set: 0 solved, 271 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/293 variables, 0/422 constraints. Problems are: Problem set: 0 solved, 271 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 293/293 variables, and 422 constraints, problems are : Problem set: 0 solved, 271 unsolved in 30024 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 271/271 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 37947ms problems are : Problem set: 0 solved, 271 unsolved
Search for dead transitions found 0 dead transitions in 37949ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38332 ms. Remains : 113/113 places, 273/273 transitions.
[2026-05-25 09:16:12] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {24=1, 29=1, 84=1, 101=1, 138=1, 173=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 86=1, 140=1, 173=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 8) seen :[3, 2, 6, 4, 11, 1, 3, 50]
Current structural bounds on expressions (after cover walk) : Max Seen:[15, 173, 20, 743, 601, 288, 18, 30455] Max Struct:[16, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 40003 steps (10 resets) in 1217 ms. (32 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (9 resets) in 99 ms. (400 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 111 ms. (357 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (9 resets) in 134 ms. (296 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (9 resets) in 109 ms. (363 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (9 resets) in 112 ms. (354 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 102 ms. (388 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 102 ms. (388 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 107 ms. (370 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (9 resets) in 83 ms. (476 steps per ms) remains 9/9 properties
[2026-05-25 09:16:13] [INFO ] Flatten gal took : 107 ms
[2026-05-25 09:16:13] [INFO ] Flatten gal took : 39 ms
[2026-05-25 09:16:13] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5948361115936254366.gal : 10 ms
[2026-05-25 09:16:13] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1749386394188600956.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/ReachabilityCardinality5948361115936254366.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1749386394188600956.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/ReachabilityCardinality1749386394188600956.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :31 after 1072
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :1072 after 205626
Interrupted probabilistic random walk after 225794 steps, run timeout after 3001 ms. (steps per millisecond=75 ) properties seen :0 out of 9
Probabilistic random walk after 225794 steps, saw 140563 distinct states, run finished after 3005 ms. (steps per millisecond=75 ) properties seen :0
[2026-05-25 09:16:16] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:16:16] [INFO ] Invariant cache hit.
[2026-05-25 09:16:16] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/8 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 1 (OVERLAPS) 47/55 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/55 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (OVERLAPS) 100/155 variables, 55/56 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/155 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (OVERLAPS) 75/230 variables, 19/75 constraints. Problems are: Problem set: 0 solved, 9 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/230 variables, 28/103 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/230 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (OVERLAPS) 10/240 variables, 1/104 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/240 variables, 2/106 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/240 variables, 0/106 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 11 (OVERLAPS) 46/286 variables, 30/136 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/286 variables, 5/141 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/286 variables, 0/141 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 14 (OVERLAPS) 7/293 variables, 7/148 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 16 (OVERLAPS) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Real declared 293/293 variables, and 148 constraints, problems are : Problem set: 0 solved, 9 unsolved in 801 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/8 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 1 (OVERLAPS) 47/55 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/55 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (OVERLAPS) 100/155 variables, 55/56 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/155 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (OVERLAPS) 75/230 variables, 19/75 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/230 variables, 28/103 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/230 variables, 9/112 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:17] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:17] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:17] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:17] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:17] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/230 variables, 5/117 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/230 variables, 0/117 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 10 (OVERLAPS) 10/240 variables, 1/118 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/240 variables, 2/120 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/240 variables, 0/120 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 13 (OVERLAPS) 46/286 variables, 30/150 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/286 variables, 5/155 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/286 variables, 0/155 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 16 (OVERLAPS) 7/293 variables, 7/162 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:17] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:16:17] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/293 variables, 2/164 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/293 variables, 0/164 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 19 (OVERLAPS) 0/293 variables, 0/164 constraints. Problems are: Problem set: 0 solved, 9 unsolved
No progress, stopping.
After SMT solving in domain Int declared 293/293 variables, and 164 constraints, problems are : Problem set: 0 solved, 9 unsolved in 1309 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 9/9 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 7/7 constraints]
After SMT, in 2115ms problems are : Problem set: 0 solved, 9 unsolved
Fused 9 Parikh solutions to 8 different solutions.
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :205626 after 9.21815e+08
Detected timeout of ITS tools.
[2026-05-25 09:17:03] [INFO ] Flatten gal took : 16 ms
[2026-05-25 09:17:03] [INFO ] Applying decomposition
[2026-05-25 09:17:03] [INFO ] Flatten gal took : 14 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph9777550718754953624.txt' '-o' '/tmp/graph9777550718754953624.bin' '-w' '/tmp/graph9777550718754953624.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph9777550718754953624.bin' '-l' '-1' '-v' '-w' '/tmp/graph9777550718754953624.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:17:03] [INFO ] Decomposing Gal with order
[2026-05-25 09:17:03] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:17:03] [INFO ] Removed a total of 464 redundant transitions.
[2026-05-25 09:17:03] [INFO ] Flatten gal took : 131 ms
[2026-05-25 09:17:03] [INFO ] Fuse similar labels procedure discarded/fused a total of 146 labels/synchronizations in 17 ms.
[2026-05-25 09:17:03] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16436301657672157514.gal : 7 ms
[2026-05-25 09:17:03] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality197546599419489152.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/ReachabilityCardinality16436301657672157514.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality197546599419489152.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/ReachabilityCardinality197546599419489152.prop.
Parikh walk visited 0 properties in 57266 ms.
Support contains 8 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Applied a total of 0 rules in 5 ms. Remains 113 /113 variables (removed 0) and now considering 273/273 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 113/113 places, 273/273 transitions.
RANDOM walk for 40017 steps (10 resets) in 395 ms. (101 steps per ms) remains 6/9 properties
BEST_FIRST walk for 40004 steps (9 resets) in 82 ms. (481 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 61 ms. (645 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (11 resets) in 72 ms. (548 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (9 resets) in 66 ms. (597 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (11 resets) in 72 ms. (548 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40003 steps (9 resets) in 71 ms. (555 steps per ms) remains 6/6 properties
[2026-05-25 09:17:15] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:17:15] [INFO ] Invariant cache hit.
[2026-05-25 09:17:15] [INFO ] State equation strengthened by 33 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 1 (OVERLAPS) 16/22 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/22 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 3 (OVERLAPS) 113/135 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/135 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/135 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 6 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 10/145 variables, 1/25 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/145 variables, 2/27 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/145 variables, 0/27 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 9 (OVERLAPS) 130/275 variables, 76/103 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/275 variables, 30/133 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/275 variables, 0/133 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 12 (OVERLAPS) 6/281 variables, 1/134 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/281 variables, 0/134 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 14 (OVERLAPS) 12/293 variables, 14/148 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 16 (OVERLAPS) 0/293 variables, 0/148 constraints. Problems are: Problem set: 0 solved, 6 unsolved
No progress, stopping.
After SMT solving in domain Real declared 293/293 variables, and 148 constraints, problems are : Problem set: 0 solved, 6 unsolved in 280 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 6/6 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 6 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 1 (OVERLAPS) 16/22 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/22 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 3 (OVERLAPS) 113/135 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/135 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/135 variables, 6/30 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/135 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 7 (OVERLAPS) 10/145 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/145 variables, 2/33 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/145 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 10 (OVERLAPS) 130/275 variables, 76/109 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/275 variables, 30/139 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/275 variables, 0/139 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 13 (OVERLAPS) 6/281 variables, 1/140 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/281 variables, 0/140 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 15 (OVERLAPS) 12/293 variables, 14/154 constraints. Problems are: Problem set: 0 solved, 6 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:16] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:16] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:16] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 1 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/293 variables, 3/157 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/293 variables, 0/157 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 18 (OVERLAPS) 0/293 variables, 0/157 constraints. Problems are: Problem set: 0 solved, 6 unsolved
No progress, stopping.
After SMT solving in domain Int declared 293/293 variables, and 157 constraints, problems are : Problem set: 0 solved, 6 unsolved in 592 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 113/113 constraints, ReadFeed: 33/33 constraints, PredecessorRefiner: 6/6 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 880ms problems are : Problem set: 0 solved, 6 unsolved
Fused 6 Parikh solutions to 3 different solutions.
Parikh walk visited 0 properties in 1 ms.
Support contains 6 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 110 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 110 transition count 267
Applied a total of 7 rules in 9 ms. Remains 110 /113 variables (removed 3) and now considering 267/273 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 110/113 places, 267/273 transitions.
RANDOM walk for 40003 steps (8 resets) in 141 ms. (281 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40003 steps (8 resets) in 47 ms. (833 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 6/6 properties
Interrupted probabilistic random walk after 257589 steps, run timeout after 3001 ms. (steps per millisecond=85 ) properties seen :0 out of 6
Probabilistic random walk after 257589 steps, saw 160355 distinct states, run finished after 3001 ms. (steps per millisecond=85 ) properties seen :0
[2026-05-25 09:17:20] [INFO ] Flow matrix only has 174 transitions (discarded 93 similar events)
// Phase 1: matrix 174 rows 110 cols
[2026-05-25 09:17:20] [INFO ] Computed 3 invariants in 1 ms
[2026-05-25 09:17:20] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 1 (OVERLAPS) 16/22 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/22 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 3 (OVERLAPS) 110/132 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/132 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/132 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 6 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 12/144 variables, 2/26 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/144 variables, 4/30 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/144 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 9 (OVERLAPS) 123/267 variables, 72/102 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/267 variables, 27/129 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/267 variables, 0/129 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 12 (OVERLAPS) 6/273 variables, 1/130 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/273 variables, 0/130 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 14 (OVERLAPS) 11/284 variables, 13/143 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/284 variables, 0/143 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 16 (OVERLAPS) 0/284 variables, 0/143 constraints. Problems are: Problem set: 0 solved, 6 unsolved
No progress, stopping.
After SMT solving in domain Real declared 284/284 variables, and 143 constraints, problems are : Problem set: 0 solved, 6 unsolved in 238 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 6/6 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 6 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 1 (OVERLAPS) 16/22 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/22 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 3 (OVERLAPS) 110/132 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/132 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/132 variables, 6/30 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/132 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 7 (OVERLAPS) 12/144 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/144 variables, 4/36 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/144 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 10 (OVERLAPS) 123/267 variables, 72/108 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/267 variables, 27/135 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/267 variables, 0/135 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 13 (OVERLAPS) 6/273 variables, 1/136 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/273 variables, 0/136 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 15 (OVERLAPS) 11/284 variables, 13/149 constraints. Problems are: Problem set: 0 solved, 6 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:20] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:20] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:20] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/284 variables, 3/152 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/284 variables, 0/152 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 18 (OVERLAPS) 0/284 variables, 0/152 constraints. Problems are: Problem set: 0 solved, 6 unsolved
No progress, stopping.
After SMT solving in domain Int declared 284/284 variables, and 152 constraints, problems are : Problem set: 0 solved, 6 unsolved in 544 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 6/6 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 788ms problems are : Problem set: 0 solved, 6 unsolved
Fused 6 Parikh solutions to 4 different solutions.
Parikh walk visited 0 properties in 0 ms.
Support contains 6 out of 110 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 267/267 transitions.
Applied a total of 0 rules in 8 ms. Remains 110 /110 variables (removed 0) and now considering 267/267 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 110/110 places, 267/267 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 110/110 places, 267/267 transitions.
Applied a total of 0 rules in 4 ms. Remains 110 /110 variables (removed 0) and now considering 267/267 (removed 0) transitions.
[2026-05-25 09:17:20] [INFO ] Flow matrix only has 174 transitions (discarded 93 similar events)
[2026-05-25 09:17:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:17:20] [INFO ] Implicit Places using invariants in 90 ms returned []
[2026-05-25 09:17:20] [INFO ] Flow matrix only has 174 transitions (discarded 93 similar events)
[2026-05-25 09:17:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:17:20] [INFO ] State equation strengthened by 30 read => feed constraints.
[2026-05-25 09:17:21] [INFO ] Implicit Places using invariants and state equation in 196 ms returned []
Implicit Place search using SMT with State Equation took 286 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:17:21] [INFO ] Redundant transitions in 2 ms returned []
Running 265 sub problems to find dead transitions.
[2026-05-25 09:17:21] [INFO ] Flow matrix only has 174 transitions (discarded 93 similar events)
[2026-05-25 09:17:21] [INFO ] Invariant cache hit.
[2026-05-25 09:17:21] [INFO ] State equation strengthened by 30 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/109 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/109 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 2 (OVERLAPS) 174/283 variables, 109/112 constraints. Problems are: Problem set: 0 solved, 265 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/283 variables, 30/142 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/283 variables, 0/142 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 5 (OVERLAPS) 1/284 variables, 1/143 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/284 variables, 0/143 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 7 (OVERLAPS) 0/284 variables, 0/143 constraints. Problems are: Problem set: 0 solved, 265 unsolved
No progress, stopping.
After SMT solving in domain Real declared 284/284 variables, and 143 constraints, problems are : Problem set: 0 solved, 265 unsolved in 6384 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 265/265 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 265 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/109 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/109 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 2 (OVERLAPS) 174/283 variables, 109/112 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/283 variables, 30/142 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/283 variables, 32/174 constraints. Problems are: Problem set: 0 solved, 265 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:32] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:17:32] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/283 variables, 2/176 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/283 variables, 0/176 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 7 (OVERLAPS) 1/284 variables, 1/177 constraints. Problems are: Problem set: 0 solved, 265 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/284 variables, 233/410 constraints. Problems are: Problem set: 0 solved, 265 unsolved
Detected timeout of ITS tools.
At refinement iteration 9 (INCLUDED_ONLY) 0/284 variables, 0/410 constraints. Problems are: Problem set: 0 solved, 265 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 284/284 variables, and 410 constraints, problems are : Problem set: 0 solved, 265 unsolved in 30009 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 110/110 constraints, ReadFeed: 30/30 constraints, PredecessorRefiner: 265/265 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 36494ms problems are : Problem set: 0 solved, 265 unsolved
Search for dead transitions found 0 dead transitions in 36496ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36796 ms. Remains : 110/110 places, 267/267 transitions.
FORMULA FunctionPointer-PT-b016-UpperBounds-02 16 TECHNIQUES REACHABILITY_MAX
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[173, 20, 743, 601, 288, 18, 30455] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf]
Starting property specific reduction for FunctionPointer-PT-b016-UpperBounds-03
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 09:17:57] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:17:57] [INFO ] Computed 2 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 17 ms. (555 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:[1] Max Struct:[+inf]
[2026-05-25 09:17:57] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:17:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:17:57] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:17:57] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:17:57] [INFO ] [Real]Absence check using state equation in 38 ms returned sat
[2026-05-25 09:17:57] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:17:57] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:17:57] [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 09:17:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:17:57] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:17:57] [INFO ] [Nat]Absence check using state equation in 31 ms returned sat
[2026-05-25 09:17:57] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:17:57] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:17:57] [INFO ] Added : 23 causal constraints over 6 iterations in 74 ms. Result :sat
Minimization took 42 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:[12] Max Struct:[+inf]
Support contains 1 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 106 are kept as prefixes of interest. Removing 7 places using SCC suffix rule.0 ms
Discarding 7 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 0 with 11 rules applied. Total rules applied 12 place count 106 transition count 262
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 15 place count 103 transition count 256
Iterating global reduction 1 with 3 rules applied. Total rules applied 18 place count 103 transition count 256
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 21 place count 100 transition count 250
Iterating global reduction 1 with 3 rules applied. Total rules applied 24 place count 100 transition count 250
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 27 place count 97 transition count 242
Iterating global reduction 1 with 3 rules applied. Total rules applied 30 place count 97 transition count 242
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 32 place count 95 transition count 236
Iterating global reduction 1 with 2 rules applied. Total rules applied 34 place count 95 transition count 236
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 36 place count 93 transition count 232
Iterating global reduction 1 with 2 rules applied. Total rules applied 38 place count 93 transition count 232
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 40 place count 91 transition count 226
Iterating global reduction 1 with 2 rules applied. Total rules applied 42 place count 91 transition count 226
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 44 place count 89 transition count 222
Iterating global reduction 1 with 2 rules applied. Total rules applied 46 place count 89 transition count 222
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 48 place count 87 transition count 218
Iterating global reduction 1 with 2 rules applied. Total rules applied 50 place count 87 transition count 218
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 52 place count 85 transition count 214
Iterating global reduction 1 with 2 rules applied. Total rules applied 54 place count 85 transition count 214
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 55 place count 84 transition count 212
Iterating global reduction 1 with 1 rules applied. Total rules applied 56 place count 84 transition count 212
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 57 place count 83 transition count 210
Iterating global reduction 1 with 1 rules applied. Total rules applied 58 place count 83 transition count 210
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 59 place count 82 transition count 208
Iterating global reduction 1 with 1 rules applied. Total rules applied 60 place count 82 transition count 208
Applied a total of 60 rules in 28 ms. Remains 82 /113 variables (removed 31) and now considering 208/273 (removed 65) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28 ms. Remains : 82/113 places, 208/273 transitions.
[2026-05-25 09:17:58] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 32=1, 34=1, 63=1, 94=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 60=1, 91=1, 123=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 34 ms. (steps per millisecond=294 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[12] Max Struct:[+inf]
[2026-05-25 09:17:58] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
// Phase 1: matrix 128 rows 82 cols
[2026-05-25 09:17:58] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[12] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1101 ms. (907 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 620 ms. (1610 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[238] Max Struct:[+inf]
[2026-05-25 09:17:59] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:17:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:17:59] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:17:59] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 09:17:59] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:17:59] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:17:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:17:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:17:59] [INFO ] [Nat]Absence check using state equation in 27 ms returned sat
[2026-05-25 09:17:59] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:00] [INFO ] Deduced a trap composed of 14 places in 67 ms of which 5 ms to minimize.
[2026-05-25 09:18:00] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 80 ms
[2026-05-25 09:18:00] [INFO ] Computed and/alt/rep : 60/196/54 causal constraints (skipped 72 transitions) in 9 ms.
[2026-05-25 09:18:00] [INFO ] Added : 22 causal constraints over 5 iterations in 60 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[238] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[238] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 12 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12 ms. Remains : 82/82 places, 208/208 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 7 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
[2026-05-25 09:18:00] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:00] [INFO ] Implicit Places using invariants in 74 ms returned []
[2026-05-25 09:18:00] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:00] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:00] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:18:01] [INFO ] Implicit Places using invariants and state equation in 158 ms returned []
Implicit Place search using SMT with State Equation took 233 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:18:01] [INFO ] Redundant transitions in 1 ms returned []
Running 206 sub problems to find dead transitions.
[2026-05-25 09:18:01] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:01] [INFO ] Invariant cache hit.
[2026-05-25 09:18:01] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 5 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 206 unsolved in 7063 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 206/309 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:13] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:13] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:13] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/210 variables, 3/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/210 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:27] [INFO ] Deduced a trap along path composed of 3 places in 54 ms of which 1 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/210 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/210 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 210/210 variables, and 313 constraints, problems are : Problem set: 0 solved, 206 unsolved in 30033 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 37144ms problems are : Problem set: 0 solved, 206 unsolved
Search for dead transitions found 0 dead transitions in 37144ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 37389 ms. Remains : 82/82 places, 208/208 transitions.
[2026-05-25 09:18:38] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 32=1, 34=1, 63=1, 94=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 60=1, 91=1, 123=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[238] Max Struct:[+inf]
[2026-05-25 09:18:38] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:38] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[238] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1156 ms. (864 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 677 ms. (1474 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[242] Max Struct:[+inf]
[2026-05-25 09:18:40] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:18:40] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:18:40] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 09:18:40] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:18:40] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:18:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:18:40] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:18:40] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:18:40] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:40] [INFO ] Deduced a trap composed of 14 places in 74 ms of which 5 ms to minimize.
[2026-05-25 09:18:40] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 82 ms
[2026-05-25 09:18:40] [INFO ] Computed and/alt/rep : 60/196/54 causal constraints (skipped 72 transitions) in 7 ms.
[2026-05-25 09:18:40] [INFO ] Added : 22 causal constraints over 5 iterations in 56 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[242] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[242] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 4 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 82/82 places, 208/208 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
[2026-05-25 09:18:41] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:41] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 09:18:41] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:18:41] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:18:41] [INFO ] Implicit Places using invariants and state equation in 170 ms returned []
Implicit Place search using SMT with State Equation took 245 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:18:41] [INFO ] Redundant transitions in 0 ms returned []
Running 206 sub problems to find dead transitions.
[2026-05-25 09:18:41] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:18:41] [INFO ] Invariant cache hit.
[2026-05-25 09:18:41] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 5 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 206 unsolved in 6966 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 206/309 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:53] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:53] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:18:53] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 3 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/210 variables, 3/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/210 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:08] [INFO ] Deduced a trap along path composed of 3 places in 35 ms of which 1 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/210 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/210 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 210/210 variables, and 313 constraints, problems are : Problem set: 0 solved, 206 unsolved in 30019 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 37041ms problems are : Problem set: 0 solved, 206 unsolved
Search for dead transitions found 0 dead transitions in 37042ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 37299 ms. Remains : 82/82 places, 208/208 transitions.
[2026-05-25 09:19:18] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 32=1, 34=1, 63=1, 94=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 60=1, 91=1, 123=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[242] Max Struct:[+inf]
[2026-05-25 09:19:18] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:19:18] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[242] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1134 ms. (881 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 601 ms. (1661 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[242] Max Struct:[+inf]
[2026-05-25 09:19:20] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:19:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:19:20] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:19:20] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2026-05-25 09:19:20] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:19:20] [INFO ] [Real]Added 18 Read/Feed constraints in 16 ms returned sat
[2026-05-25 09:19:20] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:19:20] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:19:20] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:19:20] [INFO ] [Nat]Added 18 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:20] [INFO ] Deduced a trap composed of 14 places in 81 ms of which 5 ms to minimize.
[2026-05-25 09:19:20] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 87 ms
[2026-05-25 09:19:20] [INFO ] Computed and/alt/rep : 60/196/54 causal constraints (skipped 72 transitions) in 6 ms.
[2026-05-25 09:19:20] [INFO ] Added : 22 causal constraints over 5 iterations in 54 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[242] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[242] Max Struct:[+inf]
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 208/208 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
[2026-05-25 09:19:21] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:19:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:19:21] [INFO ] Implicit Places using invariants in 73 ms returned []
[2026-05-25 09:19:21] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:19:21] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:19:21] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:19:21] [INFO ] Implicit Places using invariants and state equation in 173 ms returned []
Implicit Place search using SMT with State Equation took 278 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:19:21] [INFO ] Redundant transitions in 1 ms returned []
Running 206 sub problems to find dead transitions.
[2026-05-25 09:19:21] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:19:21] [INFO ] Invariant cache hit.
[2026-05-25 09:19:21] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 5 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 206 unsolved in 6799 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 206/309 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:33] [INFO ] Deduced a trap along path composed of 3 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:33] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:33] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/210 variables, 3/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/210 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:19:47] [INFO ] Deduced a trap along path composed of 3 places in 30 ms of which 0 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/210 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/210 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 210/210 variables, and 313 constraints, problems are : Problem set: 0 solved, 206 unsolved in 30024 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 36868ms problems are : Problem set: 0 solved, 206 unsolved
Search for dead transitions found 0 dead transitions in 36869ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 37160 ms. Remains : 82/82 places, 208/208 transitions.
[2026-05-25 09:19:58] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {29=1, 32=1, 34=1, 63=1, 94=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {26=1, 60=1, 91=1, 123=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 31 ms. (steps per millisecond=322 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[242] Max Struct:[+inf]
[2026-05-25 09:19:58] [INFO ] Flatten gal took : 12 ms
[2026-05-25 09:19:58] [INFO ] Flatten gal took : 33 ms
[2026-05-25 09:19:58] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9727770022062967931.gal : 2 ms
[2026-05-25 09:19:58] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14130281301504845330.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/ReachabilityCardinality9727770022062967931.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14130281301504845330.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
RANDOM walk for 40001 steps (8 resets) in 109 ms. (363 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 43 ms. (909 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality14130281301504845330.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1045
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1045 after 158846
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :158846 after 1.87407e+08
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.87407e+08 after 9.09726e+11
Interrupted probabilistic random walk after 1833828 steps, run timeout after 3001 ms. (steps per millisecond=611 ) properties seen :0 out of 1
Probabilistic random walk after 1833828 steps, saw 1141363 distinct states, run finished after 3001 ms. (steps per millisecond=611 ) properties seen :0
[2026-05-25 09:20:01] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:20:01] [INFO ] Invariant cache hit.
[2026-05-25 09:20:01] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/85 variables, 2/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/85 variables, 4/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 100/185 variables, 58/69 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/185 variables, 18/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/191 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/191 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 14/205 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/205 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/209 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/209 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 1/210 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 123 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/85 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 4/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/85 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/185 variables, 58/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 18/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/185 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/191 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/191 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/205 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/205 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/209 variables, 2/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/209 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 1/210 variables, 1/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/210 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/210 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 210/210 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 136 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 265ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 469 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 208/208 transitions.
RANDOM walk for 40001 steps (8 resets) in 88 ms. (449 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 31 ms. (1250 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1734197 steps, run timeout after 3001 ms. (steps per millisecond=577 ) properties seen :0 out of 1
Probabilistic random walk after 1734197 steps, saw 1079347 distinct states, run finished after 3001 ms. (steps per millisecond=577 ) properties seen :0
[2026-05-25 09:20:05] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:20:05] [INFO ] Invariant cache hit.
[2026-05-25 09:20:05] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 10/85 variables, 2/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/85 variables, 4/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 100/185 variables, 58/69 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/185 variables, 18/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 0/87 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 6/191 variables, 1/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/191 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 14/205 variables, 12/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/205 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 4/209 variables, 2/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/209 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 1/210 variables, 1/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 1 unsolved in 128 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 4/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 70/75 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/75 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/75 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 10/85 variables, 2/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/85 variables, 4/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/85 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 100/185 variables, 58/70 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/185 variables, 18/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/185 variables, 0/88 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 6/191 variables, 1/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/191 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 14/205 variables, 12/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/205 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/209 variables, 2/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/209 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 1/210 variables, 1/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/210 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/210 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 210/210 variables, and 104 constraints, problems are : Problem set: 0 solved, 1 unsolved in 129 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 263ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 471 ms.
Support contains 1 out of 82 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 3 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 82/82 places, 208/208 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 82/82 places, 208/208 transitions.
Applied a total of 0 rules in 2 ms. Remains 82 /82 variables (removed 0) and now considering 208/208 (removed 0) transitions.
[2026-05-25 09:20:06] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:20:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:20:06] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 09:20:06] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:20:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:20:06] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:20:06] [INFO ] Implicit Places using invariants and state equation in 169 ms returned []
Implicit Place search using SMT with State Equation took 240 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:20:06] [INFO ] Redundant transitions in 0 ms returned []
Running 206 sub problems to find dead transitions.
[2026-05-25 09:20:06] [INFO ] Flow matrix only has 128 transitions (discarded 80 similar events)
[2026-05-25 09:20:06] [INFO ] Invariant cache hit.
[2026-05-25 09:20:06] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :9.09726e+11 after 6.59113e+12
At refinement iteration 5 (OVERLAPS) 0/210 variables, 0/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
No progress, stopping.
After SMT solving in domain Real declared 210/210 variables, and 103 constraints, problems are : Problem set: 0 solved, 206 unsolved in 7011 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/82 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :6.59113e+12 after 6.63835e+14
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.63835e+14 after 2.3469e+15
At refinement iteration 1 (INCLUDED_ONLY) 0/82 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 2 (OVERLAPS) 128/210 variables, 82/85 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/210 variables, 18/103 constraints. Problems are: Problem set: 0 solved, 206 unsolved
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.3469e+15 after 5.70647e+15
At refinement iteration 4 (INCLUDED_ONLY) 0/210 variables, 206/309 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:18] [INFO ] Deduced a trap along path composed of 3 places in 32 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:18] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:18] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/210 variables, 3/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.70647e+15 after 1.24191e+16
At refinement iteration 6 (INCLUDED_ONLY) 0/210 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:20:33] [INFO ] Deduced a trap along path composed of 3 places in 66 ms of which 1 ms to minimize.
At refinement iteration 7 (OVERLAPS) 0/210 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/210 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 206 unsolved
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Broken pipe")
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Stream closed")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 210/210 variables, and 313 constraints, problems are : Problem set: 0 solved, 206 unsolved in 30025 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 82/82 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 206/206 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 37081ms problems are : Problem set: 0 solved, 206 unsolved
Search for dead transitions found 0 dead transitions in 37082ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 37331 ms. Remains : 82/82 places, 208/208 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 80 transitions
Reduce isomorphic transitions removed 80 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 87 rules applied. Total rules applied 87 place count 82 transition count 121
Reduce places removed 7 places and 0 transitions.
Iterating post reduction 1 with 7 rules applied. Total rules applied 94 place count 75 transition count 121
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 94 place count 75 transition count 105
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 126 place count 59 transition count 105
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 156 place count 44 transition count 90
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 163 place count 37 transition count 76
Iterating global reduction 2 with 7 rules applied. Total rules applied 170 place count 37 transition count 76
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 177 place count 30 transition count 62
Iterating global reduction 2 with 7 rules applied. Total rules applied 184 place count 30 transition count 62
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 191 place count 23 transition count 48
Iterating global reduction 2 with 7 rules applied. Total rules applied 198 place count 23 transition count 48
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 205 place count 23 transition count 41
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 205 place count 23 transition count 40
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 207 place count 22 transition count 40
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 211 place count 20 transition count 40
Applied a total of 211 rules in 26 ms. Remains 20 /82 variables (removed 62) and now considering 40/208 (removed 168) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 40 rows 20 cols
[2026-05-25 09:20:43] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:20:43] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:20:43] [INFO ] After 17ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 09:20:43] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:20:43] [INFO ] After 16ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 09:20:43] [INFO ] After 85ms 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 09:20:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:20:43] [INFO ] After 10ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 09:20:43] [INFO ] After 3ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 09:20:43] [INFO ] After 8ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:20:43] [INFO ] After 47ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:20:43] [INFO ] Flatten gal took : 3 ms
[2026-05-25 09:20:43] [INFO ] Flatten gal took : 2 ms
[2026-05-25 09:20:43] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8674468307216763501.gal : 1 ms
[2026-05-25 09:20:43] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12467880390774603255.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/ReachabilityCardinality8674468307216763501.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12467880390774603255.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/ReachabilityCardinality12467880390774603255.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 48
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :48 after 1836
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1836 after 310692
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :310692 after 2.20708e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :2.20708e+06 after 1.10754e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.10754e+07 after 4.8981e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :4.8981e+07 after 2.05226e+08
Detected timeout of ITS tools.
[2026-05-25 09:20:48] [INFO ] Flatten gal took : 12 ms
[2026-05-25 09:20:48] [INFO ] Applying decomposition
[2026-05-25 09:20:48] [INFO ] Flatten gal took : 28 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/graph5283474223525045142.txt' '-o' '/tmp/graph5283474223525045142.bin' '-w' '/tmp/graph5283474223525045142.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5283474223525045142.bin' '-l' '-1' '-v' '-w' '/tmp/graph5283474223525045142.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:20:48] [INFO ] Decomposing Gal with order
[2026-05-25 09:20:48] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:20:48] [INFO ] Removed a total of 355 redundant transitions.
[2026-05-25 09:20:48] [INFO ] Flatten gal took : 33 ms
[2026-05-25 09:20:48] [INFO ] Fuse similar labels procedure discarded/fused a total of 104 labels/synchronizations in 22 ms.
[2026-05-25 09:20:48] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10054942050311520523.gal : 2 ms
[2026-05-25 09:20:48] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8468070740709147266.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/ReachabilityCardinality10054942050311520523.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8468070740709147266.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/ReachabilityCardinality8468070740709147266.prop.
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.05226e+08 after 8.39009e+08
Detected timeout of ITS tools.
[2026-05-25 09:20:58] [INFO ] Flatten gal took : 5 ms
[2026-05-25 09:20:58] [INFO ] Applying decomposition
[2026-05-25 09:20:58] [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/graph2810724818957829563.txt' '-o' '/tmp/graph2810724818957829563.bin' '-w' '/tmp/graph2810724818957829563.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2810724818957829563.bin' '-l' '-1' '-v' '-w' '/tmp/graph2810724818957829563.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:20:58] [INFO ] Decomposing Gal with order
[2026-05-25 09:20:58] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:20:58] [INFO ] Removed a total of 47 redundant transitions.
[2026-05-25 09:20:58] [INFO ] Flatten gal took : 3 ms
[2026-05-25 09:20:58] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 09:20:58] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9351015148104023036.gal : 1 ms
[2026-05-25 09:20:58] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9146145894238703440.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/ReachabilityCardinality9351015148104023036.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9146145894238703440.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/ReachabilityCardinality9146145894238703440.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 48
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :48 after 2121
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30329 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:[242] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b016-UpperBounds-03 in 196337 ms.
Starting property specific reduction for FunctionPointer-PT-b016-UpperBounds-05
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 09:21:13] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:21:13] [INFO ] Computed 2 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10019 steps (2 resets) in 15 ms. (626 steps per ms)
BEST_FIRST walk for 10000 steps (3 resets) in 8 ms. (1111 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[20] Max Struct:[+inf]
[2026-05-25 09:21:13] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:21:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:21:14] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:21:14] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:21:14] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:21:14] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:21:14] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:21:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:21:14] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:21:14] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:21:14] [INFO ] [Nat]Absence check using state equation in 36 ms returned sat
[2026-05-25 09:21:14] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:21:14] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 10 ms.
[2026-05-25 09:21:14] [INFO ] Added : 6 causal constraints over 3 iterations in 43 ms. Result :sat
Minimization took 30 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[20] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[20] Max Struct:[+inf]
Support contains 1 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 109 are kept as prefixes of interest. Removing 4 places using SCC suffix rule.0 ms
Discarding 4 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 109 transition count 267
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 11 place count 105 transition count 257
Iterating global reduction 1 with 4 rules applied. Total rules applied 15 place count 105 transition count 257
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 19 place count 101 transition count 249
Iterating global reduction 1 with 4 rules applied. Total rules applied 23 place count 101 transition count 249
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 27 place count 97 transition count 237
Iterating global reduction 1 with 4 rules applied. Total rules applied 31 place count 97 transition count 237
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 34 place count 94 transition count 229
Iterating global reduction 1 with 3 rules applied. Total rules applied 37 place count 94 transition count 229
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 40 place count 91 transition count 223
Iterating global reduction 1 with 3 rules applied. Total rules applied 43 place count 91 transition count 223
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 46 place count 88 transition count 215
Iterating global reduction 1 with 3 rules applied. Total rules applied 49 place count 88 transition count 215
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 52 place count 85 transition count 209
Iterating global reduction 1 with 3 rules applied. Total rules applied 55 place count 85 transition count 209
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 58 place count 82 transition count 203
Iterating global reduction 1 with 3 rules applied. Total rules applied 61 place count 82 transition count 203
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 64 place count 79 transition count 197
Iterating global reduction 1 with 3 rules applied. Total rules applied 67 place count 79 transition count 197
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 68 place count 78 transition count 195
Iterating global reduction 1 with 1 rules applied. Total rules applied 69 place count 78 transition count 195
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 70 place count 77 transition count 193
Iterating global reduction 1 with 1 rules applied. Total rules applied 71 place count 77 transition count 193
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 72 place count 76 transition count 191
Iterating global reduction 1 with 1 rules applied. Total rules applied 73 place count 76 transition count 191
Applied a total of 73 rules in 20 ms. Remains 76 /113 variables (removed 37) and now considering 191/273 (removed 82) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20 ms. Remains : 76/113 places, 191/273 transitions.
[2026-05-25 09:21:14] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {31=1, 56=1, 102=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 56=1, 86=1, 112=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[20] Max Struct:[+inf]
[2026-05-25 09:21:14] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
// Phase 1: matrix 117 rows 76 cols
[2026-05-25 09:21:14] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[20] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1059 ms. (943 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 540 ms. (1848 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[20] Max Struct:[+inf]
[2026-05-25 09:21:16] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:21:16] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:21:16] [INFO ] [Real]Absence check using state equation in 37 ms returned sat
[2026-05-25 09:21:16] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:21:16] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:21:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:21:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:21:16] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:21:16] [INFO ] [Nat]Added 18 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:21:16] [INFO ] Deduced a trap composed of 13 places in 60 ms of which 5 ms to minimize.
[2026-05-25 09:21:16] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 72 ms
[2026-05-25 09:21:16] [INFO ] Computed and/alt/rep : 61/197/52 causal constraints (skipped 63 transitions) in 9 ms.
[2026-05-25 09:21:16] [INFO ] Added : 12 causal constraints over 5 iterations in 45 ms. Result :sat
Minimization took 20 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[20] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[20] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 191/191 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 09:21:16] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:21:16] [INFO ] Implicit Places using invariants in 68 ms returned []
[2026-05-25 09:21:16] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:21:16] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:21:16] [INFO ] Implicit Places using invariants and state equation in 177 ms returned []
Implicit Place search using SMT with State Equation took 247 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:21:16] [INFO ] Redundant transitions in 1 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 09:21:16] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:16] [INFO ] Invariant cache hit.
[2026-05-25 09:21:16] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 2 (OVERLAPS) 117/193 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 18/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 189 unsolved in 4111 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 189/189 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 189 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 2 (OVERLAPS) 117/193 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 18/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 189/286 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 286 constraints, problems are : Problem set: 0 solved, 189 unsolved in 15404 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 189/189 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 19556ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 19557ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19816 ms. Remains : 76/76 places, 191/191 transitions.
[2026-05-25 09:21:36] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {31=1, 56=1, 102=1, 115=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {31=1, 56=1, 86=1, 112=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 26 ms. (steps per millisecond=384 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[20] Max Struct:[+inf]
[2026-05-25 09:21:36] [INFO ] Flatten gal took : 14 ms
RANDOM walk for 40007 steps (8 resets) in 112 ms. (354 steps per ms) remains 1/1 properties
[2026-05-25 09:21:36] [INFO ] Flatten gal took : 17 ms
[2026-05-25 09:21:36] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3098538469318921732.gal : 5 ms
[2026-05-25 09:21:36] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8120570313812013136.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/ReachabilityCardinality3098538469318921732.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8120570313812013136.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 40003 steps (8 resets) in 32 ms. (1212 steps per ms) remains 1/1 properties

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality8120570313812013136.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 923
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :923 after 103734
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :103734 after 6.78139e+07
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :6.78139e+07 after 3.49748e+10
Interrupted probabilistic random walk after 1834997 steps, run timeout after 3001 ms. (steps per millisecond=611 ) properties seen :0 out of 1
Probabilistic random walk after 1834997 steps, saw 1116228 distinct states, run finished after 3001 ms. (steps per millisecond=611 ) properties seen :0
[2026-05-25 09:21:39] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:39] [INFO ] Invariant cache hit.
[2026-05-25 09:21:39] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 61/69 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 113 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 61/69 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/69 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/69 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 6/75 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/75 variables, 2/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/75 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 94/169 variables, 53/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 17/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 11/186 variables, 10/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/186 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/190 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/190 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/193 variables, 2/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/193 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/193 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 98 constraints, problems are : Problem set: 0 solved, 1 unsolved in 108 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 227ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 40 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 76/76 places, 191/191 transitions.
RANDOM walk for 40000 steps (8 resets) in 61 ms. (645 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 30 ms. (1290 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :3.49748e+10 after 3.15108e+13
Interrupted probabilistic random walk after 1722371 steps, run timeout after 3001 ms. (steps per millisecond=573 ) properties seen :0 out of 1
Probabilistic random walk after 1722371 steps, saw 1063667 distinct states, run finished after 3001 ms. (steps per millisecond=573 ) properties seen :0
[2026-05-25 09:21:42] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:42] [INFO ] Invariant cache hit.
[2026-05-25 09:21:42] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 61/69 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/69 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 6/75 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/75 variables, 2/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/75 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 94/169 variables, 53/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 17/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/175 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/175 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 11/186 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/186 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 4/190 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/190 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 3/193 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 83 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 2/3 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 5/8 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/8 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 61/69 variables, 4/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/69 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/69 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/69 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 6/75 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/75 variables, 2/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/75 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 94/169 variables, 53/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/169 variables, 17/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/169 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/175 variables, 1/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/84 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 11/186 variables, 10/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/186 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 4/190 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/190 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 3/193 variables, 2/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/193 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/193 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 98 constraints, problems are : Problem set: 0 solved, 1 unsolved in 98 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 189ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 28 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 191/191 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 191/191 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 191/191 (removed 0) transitions.
[2026-05-25 09:21:42] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:21:43] [INFO ] Implicit Places using invariants in 347 ms returned []
[2026-05-25 09:21:43] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:21:43] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:21:43] [INFO ] Implicit Places using invariants and state equation in 165 ms returned []
Implicit Place search using SMT with State Equation took 528 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:21:43] [INFO ] Redundant transitions in 0 ms returned []
Running 189 sub problems to find dead transitions.
[2026-05-25 09:21:43] [INFO ] Flow matrix only has 117 transitions (discarded 74 similar events)
[2026-05-25 09:21:43] [INFO ] Invariant cache hit.
[2026-05-25 09:21:43] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 2 (OVERLAPS) 117/193 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 18/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 97 constraints, problems are : Problem set: 0 solved, 189 unsolved in 4010 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 189/189 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 189 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 2 (OVERLAPS) 117/193 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 18/97 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 189/286 constraints. Problems are: Problem set: 0 solved, 189 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 189 unsolved
Invariant property MIN0 does not hold.
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 129 fixpoint passes
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,8.73338e+14,24.8076,469884,2,5049,12,3.25388e+06,6,0,497,938929,0
Total reachable state count : 873337967832538

Verifying 1 reachability properties.
Invariant property MIN0 does not hold.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
MIN0,7.75588e+08,24.8292,469884,2,287,12,3.25388e+06,7,0,500,938929,0
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 189 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 286 constraints, problems are : Problem set: 0 solved, 189 unsolved in 15198 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 189/189 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 19249ms problems are : Problem set: 0 solved, 189 unsolved
Search for dead transitions found 0 dead transitions in 19250ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19785 ms. Remains : 76/76 places, 191/191 transitions.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[20] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b016-UpperBounds-05 in 48631 ms.
Starting property specific reduction for FunctionPointer-PT-b016-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 09:22:02] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:22:02] [INFO ] Computed 2 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10003 steps (2 resets) in 17 ms. (555 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:[1] Max Struct:[+inf]
[2026-05-25 09:22:02] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:22:02] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:22:02] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:22:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:22:02] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:22:02] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:22:02] [INFO ] [Real]Added 33 Read/Feed constraints in 14 ms returned sat
[2026-05-25 09:22:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:22:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:22:02] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:22:02] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:22:02] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 8 ms.
[2026-05-25 09:22:02] [INFO ] Added : 34 causal constraints over 9 iterations in 112 ms. Result :sat
Minimization took 38 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 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 106 are kept as prefixes of interest. Removing 7 places using SCC suffix rule.0 ms
Discarding 7 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 0 with 11 rules applied. Total rules applied 12 place count 106 transition count 262
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 16 place count 102 transition count 252
Iterating global reduction 1 with 4 rules applied. Total rules applied 20 place count 102 transition count 252
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 24 place count 98 transition count 244
Iterating global reduction 1 with 4 rules applied. Total rules applied 28 place count 98 transition count 244
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 31 place count 95 transition count 236
Iterating global reduction 1 with 3 rules applied. Total rules applied 34 place count 95 transition count 236
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 36 place count 93 transition count 230
Iterating global reduction 1 with 2 rules applied. Total rules applied 38 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 40 place count 91 transition count 226
Iterating global reduction 1 with 2 rules applied. Total rules applied 42 place count 91 transition count 226
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 44 place count 89 transition count 220
Iterating global reduction 1 with 2 rules applied. Total rules applied 46 place count 89 transition count 220
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 48 place count 87 transition count 216
Iterating global reduction 1 with 2 rules applied. Total rules applied 50 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 52 place count 85 transition count 212
Iterating global reduction 1 with 2 rules applied. Total rules applied 54 place count 85 transition count 212
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 56 place count 83 transition count 208
Iterating global reduction 1 with 2 rules applied. Total rules applied 58 place count 83 transition count 208
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 59 place count 82 transition count 206
Iterating global reduction 1 with 1 rules applied. Total rules applied 60 place count 82 transition count 206
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 61 place count 81 transition count 204
Iterating global reduction 1 with 1 rules applied. Total rules applied 62 place count 81 transition count 204
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 63 place count 80 transition count 202
Iterating global reduction 1 with 1 rules applied. Total rules applied 64 place count 80 transition count 202
Applied a total of 64 rules in 23 ms. Remains 80 /113 variables (removed 33) and now considering 202/273 (removed 71) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23 ms. Remains : 80/113 places, 202/273 transitions.
[2026-05-25 09:22:03] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[6] Max Struct:[+inf]
[2026-05-25 09:22:03] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
// Phase 1: matrix 124 rows 80 cols
[2026-05-25 09:22:03] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[6] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1097 ms. (910 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 591 ms. (1689 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[676] Max Struct:[+inf]
[2026-05-25 09:22:04] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:04] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:22:04] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:04] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:22:04] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:04] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:22:04] [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 09:22:04] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:04] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:22:04] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:22:04] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 7 ms.
[2026-05-25 09:22:04] [INFO ] Added : 9 causal constraints over 3 iterations in 47 ms. Result :sat
Minimization took 33 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[676] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[676] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 09:22:06] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:06] [INFO ] Implicit Places using invariants in 77 ms returned []
[2026-05-25 09:22:06] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:06] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:07] [INFO ] Implicit Places using invariants and state equation in 194 ms returned []
Implicit Place search using SMT with State Equation took 271 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:22:07] [INFO ] Redundant transitions in 1 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 09:22:07] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:07] [INFO ] Invariant cache hit.
[2026-05-25 09:22:07] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3962 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (OVERLAPS) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 301 constraints, problems are : Problem set: 0 solved, 200 unsolved in 16198 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 20204ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 20206ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20489 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 09:22:27] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[676] Max Struct:[+inf]
[2026-05-25 09:22:27] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:27] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[676] Max Struct:[+inf]
RANDOM walk for 1000002 steps (2 resets) in 1155 ms. (865 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 643 ms. (1552 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[686] Max Struct:[+inf]
[2026-05-25 09:22:29] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:22:29] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:29] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:22:29] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:29] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:22:29] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:22:29] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:29] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 09:22:29] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:22:29] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 7 ms.
[2026-05-25 09:22:29] [INFO ] Added : 9 causal constraints over 3 iterations in 34 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[686] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[686] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 4 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 09:22:31] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:31] [INFO ] Implicit Places using invariants in 76 ms returned []
[2026-05-25 09:22:31] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:31] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:31] [INFO ] Implicit Places using invariants and state equation in 195 ms returned []
Implicit Place search using SMT with State Equation took 278 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:22:31] [INFO ] Redundant transitions in 1 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 09:22:31] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:31] [INFO ] Invariant cache hit.
[2026-05-25 09:22:31] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3957 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (OVERLAPS) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 301 constraints, problems are : Problem set: 0 solved, 200 unsolved in 16088 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 20091ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 20093ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20385 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 09:22:51] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[686] Max Struct:[+inf]
[2026-05-25 09:22:51] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:51] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[686] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1138 ms. (877 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 598 ms. (1669 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[715] Max Struct:[+inf]
[2026-05-25 09:22:53] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:53] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:22:53] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:53] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:22:53] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:53] [INFO ] [Real]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:22:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:22:53] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:22:53] [INFO ] [Nat]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:22:53] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:22:53] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 6 ms.
[2026-05-25 09:22:53] [INFO ] Added : 9 causal constraints over 3 iterations in 32 ms. Result :sat
Minimization took 22 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[715] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[715] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 4 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 09:22:55] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:55] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-25 09:22:55] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:22:55] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:22:55] [INFO ] Implicit Places using invariants and state equation in 180 ms returned []
Implicit Place search using SMT with State Equation took 253 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:22:55] [INFO ] Redundant transitions in 1 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 09:22:55] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:22:55] [INFO ] Invariant cache hit.
[2026-05-25 09:22:55] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3884 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (OVERLAPS) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 301 constraints, problems are : Problem set: 0 solved, 200 unsolved in 15805 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 19739ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 19740ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20008 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 09:23:15] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 1) seen :[3]
Current structural bounds on expressions (after cover walk) : Max Seen:[715] Max Struct:[+inf]
[2026-05-25 09:23:15] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:15] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[715] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1163 ms. (859 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 597 ms. (1672 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[715] Max Struct:[+inf]
[2026-05-25 09:23:17] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:23:17] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:23:17] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:23:17] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:23:17] [INFO ] [Real]Added 18 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:23:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:23:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:23:17] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 09:23:17] [INFO ] [Nat]Added 18 Read/Feed constraints in 2 ms returned sat
[2026-05-25 09:23:17] [INFO ] Computed and/alt/rep : 59/192/53 causal constraints (skipped 69 transitions) in 6 ms.
[2026-05-25 09:23:17] [INFO ] Added : 9 causal constraints over 3 iterations in 33 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[715] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[715] Max Struct:[+inf]
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 09:23:19] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:19] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 09:23:19] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:19] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:23:19] [INFO ] Implicit Places using invariants and state equation in 197 ms returned []
Implicit Place search using SMT with State Equation took 269 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:23:19] [INFO ] Redundant transitions in 1 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 09:23:19] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:19] [INFO ] Invariant cache hit.
[2026-05-25 09:23:19] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3986 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 6 (OVERLAPS) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 301 constraints, problems are : Problem set: 0 solved, 200 unsolved in 15755 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 19785ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 19787ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20063 ms. Remains : 80/80 places, 202/202 transitions.
[2026-05-25 09:23:39] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 58=1, 104=1, 123=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {29=1, 60=1, 90=1, 119=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 32 ms. (steps per millisecond=312 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[715] Max Struct:[+inf]
[2026-05-25 09:23:39] [INFO ] Flatten gal took : 15 ms
[2026-05-25 09:23:39] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:23:39] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11933197034329207517.gal : 2 ms
[2026-05-25 09:23:39] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3834936521038738811.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/ReachabilityCardinality11933197034329207517.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3834936521038738811.prop' '--nowitness' '--gen-order' 'FOLLOW'

RANDOM walk for 40005 steps (8 resets) in 99 ms. (400 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
BEST_FIRST walk for 40003 steps (8 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality3834936521038738811.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1045
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1045 after 158846
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :158846 after 1.87407e+08
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.87407e+08 after 9.09726e+11
Interrupted probabilistic random walk after 1922722 steps, run timeout after 3001 ms. (steps per millisecond=640 ) properties seen :0 out of 1
Probabilistic random walk after 1922722 steps, saw 1116716 distinct states, run finished after 3001 ms. (steps per millisecond=640 ) properties seen :0
[2026-05-25 09:23:42] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:42] [INFO ] Invariant cache hit.
[2026-05-25 09:23:42] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 7/93 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/93 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 96/189 variables, 55/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 17/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 9/204 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 18 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 1 unsolved in 95 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/86 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 7/93 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 3/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/93 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 96/189 variables, 55/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 17/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 9/204 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 105 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 202ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1102 ms.
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 80/80 places, 202/202 transitions.
RANDOM walk for 40002 steps (8 resets) in 89 ms. (444 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 29 ms. (1333 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1954284 steps, run timeout after 3001 ms. (steps per millisecond=651 ) properties seen :0 out of 1
Probabilistic random walk after 1954284 steps, saw 1136686 distinct states, run finished after 3001 ms. (steps per millisecond=651 ) properties seen :0
[2026-05-25 09:23:47] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:47] [INFO ] Invariant cache hit.
[2026-05-25 09:23:47] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 7/93 variables, 2/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/93 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 96/189 variables, 55/73 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/189 variables, 17/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 0/90 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 6/195 variables, 1/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/195 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 9/204 variables, 10/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 18 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 1 unsolved in 95 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 9/13 variables, 3/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/13 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 73/86 variables, 8/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/86 variables, 1/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/86 variables, 1/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/86 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 7/93 variables, 2/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/93 variables, 3/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/93 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 96/189 variables, 55/74 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/189 variables, 17/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/189 variables, 0/91 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 6/195 variables, 1/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/195 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 9/204 variables, 10/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/204 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 102 constraints, problems are : Problem set: 0 solved, 1 unsolved in 91 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 192ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 1107 ms.
Support contains 1 out of 80 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 2 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 80/80 places, 202/202 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 80/80 places, 202/202 transitions.
Applied a total of 0 rules in 3 ms. Remains 80 /80 variables (removed 0) and now considering 202/202 (removed 0) transitions.
[2026-05-25 09:23:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:48] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 09:23:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:23:48] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:23:48] [INFO ] Implicit Places using invariants and state equation in 182 ms returned []
Implicit Place search using SMT with State Equation took 252 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:23:48] [INFO ] Redundant transitions in 1 ms returned []
Running 200 sub problems to find dead transitions.
[2026-05-25 09:23:48] [INFO ] Flow matrix only has 124 transitions (discarded 78 similar events)
[2026-05-25 09:23:48] [INFO ] Invariant cache hit.
[2026-05-25 09:23:48] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :9.09726e+11 after 6.59113e+12
At refinement iteration 5 (OVERLAPS) 0/204 variables, 0/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Real declared 204/204 variables, and 101 constraints, problems are : Problem set: 0 solved, 200 unsolved in 3798 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 200 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/80 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/80 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 2 (OVERLAPS) 124/204 variables, 80/83 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 18/101 constraints. Problems are: Problem set: 0 solved, 200 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/204 variables, 200/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :6.59113e+12 after 6.63835e+14
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.63835e+14 after 2.3469e+15
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.3469e+15 after 5.70647e+15
At refinement iteration 5 (INCLUDED_ONLY) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :5.70647e+15 after 1.24191e+16
At refinement iteration 6 (OVERLAPS) 0/204 variables, 0/301 constraints. Problems are: Problem set: 0 solved, 200 unsolved
No progress, stopping.
After SMT solving in domain Int declared 204/204 variables, and 301 constraints, problems are : Problem set: 0 solved, 200 unsolved in 15713 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 80/80 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 200/200 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 19555ms problems are : Problem set: 0 solved, 200 unsolved
Search for dead transitions found 0 dead transitions in 19555ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 19816 ms. Remains : 80/80 places, 202/202 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 78 transitions
Reduce isomorphic transitions removed 78 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 84 rules applied. Total rules applied 84 place count 80 transition count 118
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 90 place count 74 transition count 118
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 90 place count 74 transition count 102
Deduced a syphon composed of 16 places in 0 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 122 place count 58 transition count 102
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 152 place count 43 transition count 87
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 159 place count 36 transition count 73
Iterating global reduction 2 with 7 rules applied. Total rules applied 166 place count 36 transition count 73
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 173 place count 29 transition count 59
Iterating global reduction 2 with 7 rules applied. Total rules applied 180 place count 29 transition count 59
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 187 place count 22 transition count 45
Iterating global reduction 2 with 7 rules applied. Total rules applied 194 place count 22 transition count 45
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 201 place count 22 transition count 38
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 201 place count 22 transition count 37
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 203 place count 21 transition count 37
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 205 place count 20 transition count 37
Applied a total of 205 rules in 16 ms. Remains 20 /80 variables (removed 60) and now considering 37/202 (removed 165) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 37 rows 20 cols
[2026-05-25 09:24:08] [INFO ] Computed 3 invariants in 0 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:24:08] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 09:24:08] [INFO ] After 7ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-25 09:24:08] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:24:08] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-25 09:24:08] [INFO ] After 29ms 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 09:24:08] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:24:08] [INFO ] After 8ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 09:24:08] [INFO ] After 3ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 09:24:08] [INFO ] After 5ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:24:08] [INFO ] After 36ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:24:08] [INFO ] Flatten gal took : 1 ms
[2026-05-25 09:24:08] [INFO ] Flatten gal took : 2 ms
[2026-05-25 09:24:08] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13248058121963603417.gal : 0 ms
[2026-05-25 09:24:08] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11928529998994451705.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/ReachabilityCardinality13248058121963603417.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11928529998994451705.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/ReachabilityCardinality11928529998994451705.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 48
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :48 after 1836
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1836 after 310692
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :310692 after 2.20708e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :2.20708e+06 after 1.10754e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.10754e+07 after 4.8981e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :4.8981e+07 after 2.05226e+08
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.05226e+08 after 8.39009e+08
Detected timeout of ITS tools.
[2026-05-25 09:24:23] [INFO ] Flatten gal took : 3 ms
[2026-05-25 09:24:23] [INFO ] Applying decomposition
[2026-05-25 09:24:23] [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/graph16999565471269699773.txt' '-o' '/tmp/graph16999565471269699773.bin' '-w' '/tmp/graph16999565471269699773.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph16999565471269699773.bin' '-l' '-1' '-v' '-w' '/tmp/graph16999565471269699773.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:24:23] [INFO ] Decomposing Gal with order
[2026-05-25 09:24:23] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:24:23] [INFO ] Removed a total of 36 redundant transitions.
[2026-05-25 09:24:23] [INFO ] Flatten gal took : 10 ms
[2026-05-25 09:24:23] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 1 ms.
[2026-05-25 09:24:23] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8386187854086948776.gal : 1 ms
[2026-05-25 09:24:23] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality61031751107288804.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/ReachabilityCardinality8386187854086948776.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality61031751107288804.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...305
Loading property file /tmp/ReachabilityCardinality61031751107288804.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 48
Detected timeout of ITS tools.
[2026-05-25 09:24:29] [INFO ] Flatten gal took : 15 ms
[2026-05-25 09:24:29] [INFO ] Applying decomposition
[2026-05-25 09:24:29] [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/graph5240444843740840757.txt' '-o' '/tmp/graph5240444843740840757.bin' '-w' '/tmp/graph5240444843740840757.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5240444843740840757.bin' '-l' '-1' '-v' '-w' '/tmp/graph5240444843740840757.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:24:29] [INFO ] Decomposing Gal with order
[2026-05-25 09:24:29] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:24:29] [INFO ] Removed a total of 344 redundant transitions.
[2026-05-25 09:24:29] [INFO ] Flatten gal took : 13 ms
[2026-05-25 09:24:29] [INFO ] Fuse similar labels procedure discarded/fused a total of 104 labels/synchronizations in 5 ms.
[2026-05-25 09:24:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality18133931885963217199.gal : 2 ms
[2026-05-25 09:24:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3524386947448862666.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/ReachabilityCardinality18133931885963217199.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3524386947448862666.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/ReachabilityCardinality3524386947448862666.prop.
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30190 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:[715] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b016-UpperBounds-07 in 155767 ms.
Starting property specific reduction for FunctionPointer-PT-b016-UpperBounds-09
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 09:24:38] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:24:38] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 20 ms. (476 steps per ms)
BEST_FIRST walk for 10001 steps (3 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[25] Max Struct:[+inf]
[2026-05-25 09:24:38] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:24:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:24:38] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-25 09:24:38] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:24:38] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:24:38] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:24:38] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:24:38] [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 09:24:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:24:38] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:24:38] [INFO ] [Nat]Absence check using state equation in 33 ms returned sat
[2026-05-25 09:24:38] [INFO ] [Nat]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:24:38] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:24:38] [INFO ] Added : 12 causal constraints over 5 iterations in 57 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[25] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[25] Max Struct:[+inf]
Support contains 1 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 106 are kept as prefixes of interest. Removing 7 places using SCC suffix rule.1 ms
Discarding 7 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 0 with 11 rules applied. Total rules applied 12 place count 106 transition count 262
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 15 place count 103 transition count 254
Iterating global reduction 1 with 3 rules applied. Total rules applied 18 place count 103 transition count 254
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 21 place count 100 transition count 248
Iterating global reduction 1 with 3 rules applied. Total rules applied 24 place count 100 transition count 248
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 27 place count 97 transition count 238
Iterating global reduction 1 with 3 rules applied. Total rules applied 30 place count 97 transition count 238
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 33 place count 94 transition count 230
Iterating global reduction 1 with 3 rules applied. Total rules applied 36 place count 94 transition count 230
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 39 place count 91 transition count 224
Iterating global reduction 1 with 3 rules applied. Total rules applied 42 place count 91 transition count 224
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 45 place count 88 transition count 216
Iterating global reduction 1 with 3 rules applied. Total rules applied 48 place count 88 transition count 216
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 51 place count 85 transition count 210
Iterating global reduction 1 with 3 rules applied. Total rules applied 54 place count 85 transition count 210
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 57 place count 82 transition count 204
Iterating global reduction 1 with 3 rules applied. Total rules applied 60 place count 82 transition count 204
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 63 place count 79 transition count 198
Iterating global reduction 1 with 3 rules applied. Total rules applied 66 place count 79 transition count 198
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 67 place count 78 transition count 196
Iterating global reduction 1 with 1 rules applied. Total rules applied 68 place count 78 transition count 196
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 69 place count 77 transition count 194
Iterating global reduction 1 with 1 rules applied. Total rules applied 70 place count 77 transition count 194
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 71 place count 76 transition count 192
Iterating global reduction 1 with 1 rules applied. Total rules applied 72 place count 76 transition count 192
Applied a total of 72 rules in 16 ms. Remains 76 /113 variables (removed 37) and now considering 192/273 (removed 81) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 76/113 places, 192/273 transitions.
[2026-05-25 09:24:38] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 54=1, 84=1, 114=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 55=1, 101=1, 116=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[25] Max Struct:[+inf]
[2026-05-25 09:24:38] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
// Phase 1: matrix 118 rows 76 cols
[2026-05-25 09:24:38] [INFO ] Computed 3 invariants in 12 ms
Current structural bounds on expressions (after invariants) : Max Seen:[25] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1114 ms. (896 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 580 ms. (1721 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[937] Max Struct:[+inf]
[2026-05-25 09:24:40] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:24:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:24:40] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:24:40] [INFO ] [Real]Absence check using state equation in 22 ms returned sat
[2026-05-25 09:24:40] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:24:40] [INFO ] [Real]Added 17 Read/Feed constraints in 16 ms returned sat
[2026-05-25 09:24:40] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:24:40] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:24:40] [INFO ] [Nat]Absence check using state equation in 23 ms returned sat
[2026-05-25 09:24:40] [INFO ] [Nat]Added 17 Read/Feed constraints in 3 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:40] [INFO ] Deduced a trap composed of 14 places in 64 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:40] [INFO ] Deduced a trap composed of 14 places in 56 ms of which 4 ms to minimize.
[2026-05-25 09:24:40] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 135 ms
[2026-05-25 09:24:40] [INFO ] Computed and/alt/rep : 57/184/51 causal constraints (skipped 65 transitions) in 5 ms.
[2026-05-25 09:24:40] [INFO ] Added : 5 causal constraints over 3 iterations in 30 ms. Result :sat
Minimization took 18 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[937] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[937] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 09:24:40] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:24:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:24:40] [INFO ] Implicit Places using invariants in 60 ms returned []
[2026-05-25 09:24:40] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:24:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:24:40] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:24:41] [INFO ] Implicit Places using invariants and state equation in 168 ms returned []
Implicit Place search using SMT with State Equation took 237 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:24:41] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 09:24:41] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:24:41] [INFO ] Invariant cache hit.
[2026-05-25 09:24:41] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4601 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:24:50] [INFO ] Deduced a trap along path composed of 3 places in 28 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 1/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 287 constraints, problems are : Problem set: 0 solved, 190 unsolved in 22374 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 27024ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 27025ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27277 ms. Remains : 76/76 places, 192/192 transitions.
[2026-05-25 09:25:08] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 54=1, 84=1, 114=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 55=1, 101=1, 116=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 :[14]
Current structural bounds on expressions (after cover walk) : Max Seen:[937] Max Struct:[+inf]
[2026-05-25 09:25:08] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:08] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[937] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1056 ms. (946 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 572 ms. (1745 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[937] Max Struct:[+inf]
[2026-05-25 09:25:09] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:25:09] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:25:09] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:25:09] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:25:09] [INFO ] [Real]Added 17 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:25:09] [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 09:25:09] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:25:09] [INFO ] [Nat]Absence check using state equation in 25 ms returned sat
[2026-05-25 09:25:09] [INFO ] [Nat]Added 17 Read/Feed constraints in 4 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:10] [INFO ] Deduced a trap composed of 14 places in 65 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:10] [INFO ] Deduced a trap composed of 14 places in 60 ms of which 5 ms to minimize.
[2026-05-25 09:25:10] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 148 ms
[2026-05-25 09:25:10] [INFO ] Computed and/alt/rep : 57/184/51 causal constraints (skipped 65 transitions) in 7 ms.
[2026-05-25 09:25:10] [INFO ] Added : 5 causal constraints over 3 iterations in 31 ms. Result :sat
Minimization took 19 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[937] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[937] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 09:25:10] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:25:10] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 09:25:10] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:25:10] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:25:10] [INFO ] Implicit Places using invariants and state equation in 162 ms returned []
Implicit Place search using SMT with State Equation took 232 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:25:10] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 09:25:10] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:10] [INFO ] Invariant cache hit.
[2026-05-25 09:25:10] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4593 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:19] [INFO ] Deduced a trap along path composed of 3 places in 27 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 1/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 287 constraints, problems are : Problem set: 0 solved, 190 unsolved in 22873 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 27511ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 27511ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27757 ms. Remains : 76/76 places, 192/192 transitions.
[2026-05-25 09:25:37] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {26=1, 54=1, 84=1, 114=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {27=1, 55=1, 101=1, 116=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 1) seen :[9]
Current structural bounds on expressions (after cover walk) : Max Seen:[937] Max Struct:[+inf]
[2026-05-25 09:25:38] [INFO ] Flatten gal took : 14 ms
[2026-05-25 09:25:38] [INFO ] Flatten gal took : 11 ms
[2026-05-25 09:25:38] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11842505912448073304.gal : 1 ms
[2026-05-25 09:25:38] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3713192685645471833.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/ReachabilityCardinality11842505912448073304.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3713192685645471833.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/ReachabilityCardinality3713192685645471833.prop.
RANDOM walk for 40003 steps (8 resets) in 103 ms. (384 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 31
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :31 after 1038
BEST_FIRST walk for 40004 steps (8 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1038 after 153131
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :153131 after 1.62427e+08
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1.62427e+08 after 4.96314e+11
Interrupted probabilistic random walk after 1720874 steps, run timeout after 3001 ms. (steps per millisecond=573 ) properties seen :0 out of 1
Probabilistic random walk after 1720874 steps, saw 1071092 distinct states, run finished after 3001 ms. (steps per millisecond=573 ) properties seen :0
[2026-05-25 09:25:41] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:41] [INFO ] Invariant cache hit.
[2026-05-25 09:25:41] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 5/76 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/170 variables, 52/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/170 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/176 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/187 variables, 10/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/187 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/191 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/191 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/194 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 173 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/71 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 5/76 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 94/170 variables, 52/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/170 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/176 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/176 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 11/187 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/187 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/191 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/191 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/194 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 102 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 279ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 848 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
RANDOM walk for 40002 steps (8 resets) in 115 ms. (344 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 31 ms. (1250 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1764014 steps, run timeout after 3001 ms. (steps per millisecond=587 ) properties seen :0 out of 1
Probabilistic random walk after 1764014 steps, saw 1097930 distinct states, run finished after 3001 ms. (steps per millisecond=587 ) properties seen :0
[2026-05-25 09:25:45] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:45] [INFO ] Invariant cache hit.
[2026-05-25 09:25:45] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 5/76 variables, 2/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/76 variables, 3/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 94/170 variables, 52/65 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/170 variables, 16/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 6/176 variables, 1/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/176 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 11/187 variables, 10/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/187 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 4/191 variables, 2/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/191 variables, 0/94 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 3/194 variables, 2/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 1 unsolved in 94 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/71 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/71 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/71 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/71 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 5/76 variables, 2/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/76 variables, 3/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/76 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 94/170 variables, 52/66 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/170 variables, 16/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/170 variables, 0/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 6/176 variables, 1/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/176 variables, 0/83 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 11/187 variables, 10/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/187 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 4/191 variables, 2/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/191 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 3/194 variables, 2/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/194 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 97 constraints, problems are : Problem set: 0 solved, 1 unsolved in 128 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 225ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 847 ms.
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 09:25:46] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:25:46] [INFO ] Implicit Places using invariants in 70 ms returned []
[2026-05-25 09:25:46] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:25:46] [INFO ] State equation strengthened by 17 read => feed constraints.
[2026-05-25 09:25:46] [INFO ] Implicit Places using invariants and state equation in 156 ms returned []
Implicit Place search using SMT with State Equation took 228 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:25:46] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 09:25:46] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:25:46] [INFO ] Invariant cache hit.
[2026-05-25 09:25:46] [INFO ] State equation strengthened by 17 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :4.96314e+11 after 1.95987e+12
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1.95987e+12 after 1.10918e+13
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.10918e+13 after 2.58076e+13
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.58076e+13 after 4.27323e+15
At refinement iteration 5 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4613 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 118/194 variables, 76/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/194 variables, 17/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:25:55] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 0 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 1/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.27323e+15 after 1.76939e+16
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 287 constraints, problems are : Problem set: 0 solved, 190 unsolved in 22567 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 76/76 constraints, ReadFeed: 17/17 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 27223ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 27225ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 27466 ms. Remains : 76/76 places, 192/192 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 74 transitions
Reduce isomorphic transitions removed 74 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 0 with 81 rules applied. Total rules applied 81 place count 76 transition count 111
Reduce places removed 7 places and 0 transitions.
Iterating post reduction 1 with 7 rules applied. Total rules applied 88 place count 69 transition count 111
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 13 Pre rules applied. Total rules applied 88 place count 69 transition count 98
Deduced a syphon composed of 13 places in 0 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 2 with 26 rules applied. Total rules applied 114 place count 56 transition count 98
Performed 15 Post agglomeration using F-continuation condition.Transition count delta: 15
Deduced a syphon composed of 15 places in 0 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 144 place count 41 transition count 83
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 151 place count 34 transition count 69
Iterating global reduction 2 with 7 rules applied. Total rules applied 158 place count 34 transition count 69
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 165 place count 27 transition count 55
Iterating global reduction 2 with 7 rules applied. Total rules applied 172 place count 27 transition count 55
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 179 place count 20 transition count 41
Iterating global reduction 2 with 7 rules applied. Total rules applied 186 place count 20 transition count 41
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 193 place count 20 transition count 34
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 193 place count 20 transition count 33
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 195 place count 19 transition count 33
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 197 place count 18 transition count 33
Applied a total of 197 rules in 23 ms. Remains 18 /76 variables (removed 58) and now considering 33/192 (removed 159) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 33 rows 18 cols
[2026-05-25 09:26:13] [INFO ] Computed 3 invariants in 1 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-25 09:26:13] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:13] [INFO ] After 35ms 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 09:26:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2026-05-25 09:26:13] [INFO ] After 7ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-25 09:26:13] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-25 09:26:13] [INFO ] After 2ms SMT Verify possible using 2 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-25 09:26:13] [INFO ] After 4ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:26:13] [INFO ] After 32ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-25 09:26:13] [INFO ] Flatten gal took : 17 ms
[2026-05-25 09:26:13] [INFO ] Flatten gal took : 4 ms
[2026-05-25 09:26:13] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9144503641448844306.gal : 1 ms
[2026-05-25 09:26:13] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality16632633328289006538.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/ReachabilityCardinality9144503641448844306.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality16632633328289006538.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/ReachabilityCardinality16632633328289006538.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 48
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :48 after 1836
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :1836 after 310692
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :310692 after 2.20708e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :2.20708e+06 after 1.10754e+07
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.10754e+07 after 4.8981e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :4.8981e+07 after 2.05226e+08
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :2.05226e+08 after 8.39009e+08
Detected timeout of ITS tools.
[2026-05-25 09:26:28] [INFO ] Flatten gal took : 22 ms
[2026-05-25 09:26:28] [INFO ] Applying decomposition
[2026-05-25 09:26:28] [INFO ] Flatten gal took : 7 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph18275101580506394079.txt' '-o' '/tmp/graph18275101580506394079.bin' '-w' '/tmp/graph18275101580506394079.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph18275101580506394079.bin' '-l' '-1' '-v' '-w' '/tmp/graph18275101580506394079.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:26:28] [INFO ] Decomposing Gal with order
[2026-05-25 09:26:28] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:26:28] [INFO ] Removed a total of 324 redundant transitions.
[2026-05-25 09:26:28] [INFO ] Flatten gal took : 13 ms
[2026-05-25 09:26:28] [INFO ] Fuse similar labels procedure discarded/fused a total of 98 labels/synchronizations in 9 ms.
[2026-05-25 09:26:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10382012692135579242.gal : 1 ms
[2026-05-25 09:26:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15272998118080236713.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/ReachabilityCardinality10382012692135579242.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15272998118080236713.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...309
Loading property file /tmp/ReachabilityCardinality15272998118080236713.prop.
Detected timeout of ITS tools.
[2026-05-25 09:26:28] [INFO ] Flatten gal took : 1 ms
[2026-05-25 09:26:28] [INFO ] Applying decomposition
[2026-05-25 09:26:28] [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/graph2328847743969763643.txt' '-o' '/tmp/graph2328847743969763643.bin' '-w' '/tmp/graph2328847743969763643.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph2328847743969763643.bin' '-l' '-1' '-v' '-w' '/tmp/graph2328847743969763643.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:26:28] [INFO ] Decomposing Gal with order
[2026-05-25 09:26:28] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:26:28] [INFO ] Removed a total of 28 redundant transitions.
[2026-05-25 09:26:28] [INFO ] Flatten gal took : 2 ms
[2026-05-25 09:26:28] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 0 ms.
[2026-05-25 09:26:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9246054778486082220.gal : 0 ms
[2026-05-25 09:26:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality142902313579501073.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/ReachabilityCardinality9246054778486082220.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality142902313579501073.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...306
Loading property file /tmp/ReachabilityCardinality142902313579501073.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 48
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :48 after 3859
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :3859 after 25395
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :25395 after 67827
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :67827 after 152691
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :152691 after 321603
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :321603 after 658611
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :658611 after 1.32773e+06
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :1.32773e+06 after 2.66597e+06
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :2.66597e+06 after 5.34164e+06
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30202 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:[937] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b016-UpperBounds-09 in 125688 ms.
Starting property specific reduction for FunctionPointer-PT-b016-UpperBounds-10
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 09:26:44] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:26:44] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 14 ms. (666 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:[6] Max Struct:[+inf]
[2026-05-25 09:26:44] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:26:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:26:44] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:44] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:26:44] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:26:44] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:26:44] [INFO ] [Real]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:26:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:26:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:44] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:26:44] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:26:44] [INFO ] [Nat]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:26:44] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 11 ms.
[2026-05-25 09:26:44] [INFO ] Added : 23 causal constraints over 5 iterations in 74 ms. Result :sat
Minimization took 34 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[6] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[6] Max Struct:[+inf]
Support contains 1 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 106 are kept as prefixes of interest. Removing 7 places using SCC suffix rule.1 ms
Discarding 7 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 0 with 11 rules applied. Total rules applied 12 place count 106 transition count 262
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 15 place count 103 transition count 254
Iterating global reduction 1 with 3 rules applied. Total rules applied 18 place count 103 transition count 254
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 21 place count 100 transition count 248
Iterating global reduction 1 with 3 rules applied. Total rules applied 24 place count 100 transition count 248
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 27 place count 97 transition count 240
Iterating global reduction 1 with 3 rules applied. Total rules applied 30 place count 97 transition count 240
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 32 place count 95 transition count 234
Iterating global reduction 1 with 2 rules applied. Total rules applied 34 place count 95 transition count 234
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 36 place count 93 transition count 230
Iterating global reduction 1 with 2 rules applied. Total rules applied 38 place count 93 transition count 230
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 40 place count 91 transition count 224
Iterating global reduction 1 with 2 rules applied. Total rules applied 42 place count 91 transition count 224
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 44 place count 89 transition count 220
Iterating global reduction 1 with 2 rules applied. Total rules applied 46 place count 89 transition count 220
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 48 place count 87 transition count 216
Iterating global reduction 1 with 2 rules applied. Total rules applied 50 place count 87 transition count 216
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 52 place count 85 transition count 212
Iterating global reduction 1 with 2 rules applied. Total rules applied 54 place count 85 transition count 212
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 55 place count 84 transition count 210
Iterating global reduction 1 with 1 rules applied. Total rules applied 56 place count 84 transition count 210
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 57 place count 83 transition count 208
Iterating global reduction 1 with 1 rules applied. Total rules applied 58 place count 83 transition count 208
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 59 place count 82 transition count 206
Iterating global reduction 1 with 1 rules applied. Total rules applied 60 place count 82 transition count 206
Applied a total of 60 rules in 40 ms. Remains 82 /113 variables (removed 31) and now considering 206/273 (removed 67) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 40 ms. Remains : 82/113 places, 206/273 transitions.
[2026-05-25 09:26:44] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {30=1, 63=1, 93=1, 121=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {24=1, 57=1, 87=1, 122=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 33 ms. (steps per millisecond=303 ) properties (out of 1) seen :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 09:26:44] [INFO ] Flow matrix only has 126 transitions (discarded 80 similar events)
// Phase 1: matrix 126 rows 82 cols
[2026-05-25 09:26:44] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1164 ms. (858 steps per ms)
FORMULA FunctionPointer-PT-b016-UpperBounds-10 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 0 steps (0 resets) in 0 ms. (0 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2026-05-25 09:26:45] [INFO ] Flatten gal took : 12 ms
[2026-05-25 09:26:45] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:26:45] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality590662296208058312.gal : 2 ms
[2026-05-25 09:26:45] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11967902408069545807.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/ReachabilityCardinality590662296208058312.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11967902408069545807.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
Ending property specific reduction for FunctionPointer-PT-b016-UpperBounds-10 in 1662 ms.
Starting property specific reduction for FunctionPointer-PT-b016-UpperBounds-11
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 09:26:45] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:26:45] [INFO ] Computed 2 invariants in 0 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10001 steps (2 resets) in 15 ms. (625 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 8 ms. (1111 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[7] Max Struct:[+inf]
[2026-05-25 09:26:45] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:26:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:26:45] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:45] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:26:45] [INFO ] [Real]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:26:45] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:26:45] [INFO ] [Real]Added 33 Read/Feed constraints in 6 ms returned sat
[2026-05-25 09:26:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:26:45] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:45] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:26:45] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:26:45] [INFO ] [Nat]Added 33 Read/Feed constraints in 7 ms returned sat
[2026-05-25 09:26:45] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 10 ms.
[2026-05-25 09:26:45] [INFO ] Added : 2 causal constraints over 1 iterations in 33 ms. Result :sat
Minimization took 32 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[7] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15] Max Struct:[+inf]
Support contains 1 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 109 are kept as prefixes of interest. Removing 4 places using SCC suffix rule.0 ms
Discarding 4 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 109 transition count 268
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 10 place count 105 transition count 258
Iterating global reduction 1 with 4 rules applied. Total rules applied 14 place count 105 transition count 258
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 18 place count 101 transition count 250
Iterating global reduction 1 with 4 rules applied. Total rules applied 22 place count 101 transition count 250
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 26 place count 97 transition count 238
Iterating global reduction 1 with 4 rules applied. Total rules applied 30 place count 97 transition count 238
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 33 place count 94 transition count 230
Iterating global reduction 1 with 3 rules applied. Total rules applied 36 place count 94 transition count 230
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 39 place count 91 transition count 224
Iterating global reduction 1 with 3 rules applied. Total rules applied 42 place count 91 transition count 224
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 45 place count 88 transition count 216
Iterating global reduction 1 with 3 rules applied. Total rules applied 48 place count 88 transition count 216
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 51 place count 85 transition count 210
Iterating global reduction 1 with 3 rules applied. Total rules applied 54 place count 85 transition count 210
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 57 place count 82 transition count 204
Iterating global reduction 1 with 3 rules applied. Total rules applied 60 place count 82 transition count 204
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 63 place count 79 transition count 198
Iterating global reduction 1 with 3 rules applied. Total rules applied 66 place count 79 transition count 198
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 67 place count 78 transition count 196
Iterating global reduction 1 with 1 rules applied. Total rules applied 68 place count 78 transition count 196
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 69 place count 77 transition count 194
Iterating global reduction 1 with 1 rules applied. Total rules applied 70 place count 77 transition count 194
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 71 place count 76 transition count 192
Iterating global reduction 1 with 1 rules applied. Total rules applied 72 place count 76 transition count 192
Applied a total of 72 rules in 13 ms. Remains 76 /113 variables (removed 37) and now considering 192/273 (removed 81) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13 ms. Remains : 76/113 places, 192/273 transitions.
[2026-05-25 09:26:45] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {32=1, 57=1, 103=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 54=1, 84=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 3 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 1) seen :[1]
Current structural bounds on expressions (after cover walk) : Max Seen:[15] Max Struct:[+inf]
[2026-05-25 09:26:46] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
// Phase 1: matrix 118 rows 76 cols
[2026-05-25 09:26:46] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[15] Max Struct:[+inf]
RANDOM walk for 1000004 steps (2 resets) in 1052 ms. (949 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 523 ms. (1908 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[15] Max Struct:[+inf]
[2026-05-25 09:26:47] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:26:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:26:47] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:47] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:26:47] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2026-05-25 09:26:47] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:26:47] [INFO ] [Real]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:26:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:26:47] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:26:47] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:26:47] [INFO ] [Nat]Absence check using state equation in 24 ms returned sat
[2026-05-25 09:26:47] [INFO ] [Nat]Added 18 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:26:47] [INFO ] Computed and/alt/rep : 62/198/53 causal constraints (skipped 63 transitions) in 7 ms.
[2026-05-25 09:26:47] [INFO ] Added : 6 causal constraints over 3 iterations in 31 ms. Result :sat
Minimization took 21 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[15] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15] Max Struct:[+inf]
Support contains 1 out of 76 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 76/76 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 76/76 places, 192/192 transitions.
Applied a total of 0 rules in 2 ms. Remains 76 /76 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-25 09:26:47] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:26:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:26:47] [INFO ] Implicit Places using invariants in 72 ms returned []
[2026-05-25 09:26:47] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:26:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:26:48] [INFO ] State equation strengthened by 18 read => feed constraints.
[2026-05-25 09:26:48] [INFO ] Implicit Places using invariants and state equation in 156 ms returned []
Implicit Place search using SMT with State Equation took 229 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:26:48] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-25 09:26:48] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
[2026-05-25 09:26:48] [INFO ] Invariant cache hit.
[2026-05-25 09:26:48] [INFO ] State equation strengthened by 18 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/194 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 194/194 variables, and 96 constraints, problems are : Problem set: 0 solved, 190 unsolved in 4326 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/76 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/76 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (OVERLAPS) 118/194 variables, 76/78 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/194 variables, 18/96 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/194 variables, 190/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/194 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 7 (OVERLAPS) 0/194 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 194/194 variables, and 286 constraints, problems are : Problem set: 0 solved, 190 unsolved in 15911 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 76/76 constraints, ReadFeed: 18/18 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 20283ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 20285ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20527 ms. Remains : 76/76 places, 192/192 transitions.
[2026-05-25 09:27:08] [INFO ] Flow matrix only has 118 transitions (discarded 74 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {32=1, 57=1, 103=1, 116=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {29=1, 54=1, 84=1, 113=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 8 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 1) seen :[4]
Current structural bounds on expressions (after cover walk) : Max Seen:[15] Max Struct:[+inf]
[2026-05-25 09:27:08] [INFO ] Flatten gal took : 9 ms
[2026-05-25 09:27:08] [INFO ] Flatten gal took : 13 ms
RANDOM walk for 24439 steps (6 resets) in 78 ms. (309 steps per ms) remains 0/1 properties
[2026-05-25 09:27:08] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17411712759176128622.gal : 9 ms
[2026-05-25 09:27:08] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14373822645062342893.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/ReachabilityCardinality17411712759176128622.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14373822645062342893.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
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:[15] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-b016-UpperBounds-11 in 22873 ms.
Starting property specific reduction for FunctionPointer-PT-b016-UpperBounds-12
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 09:27:08] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
// Phase 1: matrix 180 rows 113 cols
[2026-05-25 09:27:08] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10005 steps (2 resets) in 14 ms. (667 steps per ms)
BEST_FIRST walk for 10001 steps (4 resets) in 6 ms. (1428 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[17] Max Struct:[+inf]
[2026-05-25 09:27:08] [INFO ] Flow matrix only has 180 transitions (discarded 93 similar events)
[2026-05-25 09:27:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 09:27:08] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:27:08] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 09:27:08] [INFO ] [Real]Absence check using state equation in 35 ms returned sat
[2026-05-25 09:27:08] [INFO ] State equation strengthened by 33 read => feed constraints.
[2026-05-25 09:27:08] [INFO ] [Real]Added 33 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:27:08] [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 09:27:08] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 09:27:08] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 09:27:08] [INFO ] [Nat]Absence check using state equation in 34 ms returned sat
[2026-05-25 09:27:08] [INFO ] [Nat]Added 33 Read/Feed constraints in 5 ms returned sat
[2026-05-25 09:27:08] [INFO ] Computed and/alt/rep : 58/280/55 causal constraints (skipped 123 transitions) in 9 ms.
[2026-05-25 09:27:08] [INFO ] Added : 35 causal constraints over 8 iterations in 97 ms. Result :sat
Minimization took 40 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[17] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[17] Max Struct:[+inf]
Support contains 1 out of 113 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 113/113 places, 273/273 transitions.
Graph (complete) has 469 edges and 113 vertex of which 107 are kept as prefixes of interest. Removing 6 places using SCC suffix rule.0 ms
Discarding 6 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 0 with 11 rules applied. Total rules applied 12 place count 107 transition count 262
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 15 place count 104 transition count 254
Iterating global reduction 1 with 3 rules applied. Total rules applied 18 place count 104 transition count 254
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 21 place count 101 transition count 248
Iterating global reduction 1 with 3 rules applied. Total rules applied 24 place count 101 transition count 248
Discarding 3 places :
Symmetric choice reduction at 1 with 3 rule applications. Total rules 27 place count 98 transition count 238
Iterating global reduction 1 with 3 rules applied. Total rules applied 30 place count 98 transition count 238
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 32 place count 96 transition count 234
Iterating global reduction 1 with 2 rules applied. Total rules applied 34 place count 96 transition count 234
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 36 place count 94 transition count 230
Iterating global reduction 1 with 2 rules applied. Total rules applied 38 place count 94 transition count 230
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 40 place count 92 transition count 226
Iterating global reduction 1 with 2 rules applied. Total rules applied 42 place count 92 transition count 226
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 44 place count 90 transition count 222
Iterating global reduction 1 with 2 rules applied. Total rules applied 46 place count 90 transition count 222
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 48 place count 88 transition count 218
Iterating global reduction 1 with 2 rules applied. Total rules applied 50 place count 88 transition count 218
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 52 place count 86 transition count 214
Iterating global reduction 1 with 2 rules applied. Total rules applied 54 place count 86 transition count 214
Applied a total of 54 rules in 14 ms. Remains 86 /113 variables (removed 27) and now considering 214/273 (removed 59) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 86/113 places, 214/273 transitions.
[2026-05-25 09:27:09] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 62=1, 94=1, 128=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 65=1, 97=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[24]
Current structural bounds on expressions (after cover walk) : Max Seen:[24] Max Struct:[+inf]
[2026-05-25 09:27:09] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
// Phase 1: matrix 133 rows 86 cols
[2026-05-25 09:27:09] [INFO ] Computed 3 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[24] Max Struct:[+inf]
RANDOM walk for 1000005 steps (2 resets) in 1150 ms. (868 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 648 ms. (1540 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[237] Max Struct:[+inf]
[2026-05-25 09:27:10] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:27:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:27:10] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:27:10] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2026-05-25 09:27:10] [INFO ] State equation strengthened by 19 read => feed constraints.
[2026-05-25 09:27:10] [INFO ] [Real]Added 19 Read/Feed constraints in 11 ms returned sat
[2026-05-25 09:27:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:27:11] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:27:11] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2026-05-25 09:27:11] [INFO ] [Nat]Added 19 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:27:11] [INFO ] Computed and/alt/rep : 63/212/57 causal constraints (skipped 74 transitions) in 7 ms.
[2026-05-25 09:27:11] [INFO ] Added : 18 causal constraints over 4 iterations in 42 ms. Result :sat
Minimization took 25 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[237] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[4636] Max Struct:[+inf]
Support contains 1 out of 86 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 86 /86 variables (removed 0) and now considering 214/214 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 86/86 places, 214/214 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 214/214 transitions.
Applied a total of 0 rules in 2 ms. Remains 86 /86 variables (removed 0) and now considering 214/214 (removed 0) transitions.
[2026-05-25 09:27:12] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:27:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:27:12] [INFO ] Implicit Places using invariants in 69 ms returned []
[2026-05-25 09:27:12] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:27:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:27:12] [INFO ] State equation strengthened by 19 read => feed constraints.
[2026-05-25 09:27:12] [INFO ] Implicit Places using invariants and state equation in 178 ms returned []
Implicit Place search using SMT with State Equation took 249 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:27:12] [INFO ] Redundant transitions in 1 ms returned []
Running 212 sub problems to find dead transitions.
[2026-05-25 09:27:12] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:27:12] [INFO ] Invariant cache hit.
[2026-05-25 09:27:12] [INFO ] State equation strengthened by 19 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (OVERLAPS) 133/218 variables, 85/88 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 19/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (OVERLAPS) 1/219 variables, 1/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/219 variables, 0/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (OVERLAPS) 0/219 variables, 0/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
No progress, stopping.
After SMT solving in domain Real declared 219/219 variables, and 108 constraints, problems are : Problem set: 0 solved, 212 unsolved in 8352 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 19/19 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (OVERLAPS) 133/218 variables, 85/88 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 19/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 32/139 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/218 variables, 0/139 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 6 (OVERLAPS) 1/219 variables, 1/140 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 180/320 constraints. Problems are: Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:27:33] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 1 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/219 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 10 (OVERLAPS) 0/219 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
No progress, stopping.
After SMT solving in domain Int declared 219/219 variables, and 321 constraints, problems are : Problem set: 0 solved, 212 unsolved in 30011 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 19/19 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 38411ms problems are : Problem set: 0 solved, 212 unsolved
Search for dead transitions found 0 dead transitions in 38411ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38668 ms. Remains : 86/86 places, 214/214 transitions.
[2026-05-25 09:27:50] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 62=1, 94=1, 128=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 65=1, 97=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 1) seen :[33]
Current structural bounds on expressions (after cover walk) : Max Seen:[4636] Max Struct:[+inf]
[2026-05-25 09:27:50] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:27:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[4636] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1109 ms. (900 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 618 ms. (1615 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[4636] Max Struct:[+inf]
[2026-05-25 09:27:52] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:27:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:27:52] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:27:52] [INFO ] [Real]Absence check using state equation in 26 ms returned sat
[2026-05-25 09:27:52] [INFO ] State equation strengthened by 19 read => feed constraints.
[2026-05-25 09:27:52] [INFO ] [Real]Added 19 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:27:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:27:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:27:52] [INFO ] [Nat]Absence check using state equation in 32 ms returned sat
[2026-05-25 09:27:52] [INFO ] [Nat]Added 19 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:27:52] [INFO ] Computed and/alt/rep : 63/212/57 causal constraints (skipped 74 transitions) in 7 ms.
[2026-05-25 09:27:52] [INFO ] Added : 18 causal constraints over 4 iterations in 52 ms. Result :sat
Minimization took 26 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[4636] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[90560] Max Struct:[+inf]
Support contains 1 out of 86 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 214/214 transitions.
Applied a total of 0 rules in 2 ms. Remains 86 /86 variables (removed 0) and now considering 214/214 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 86/86 places, 214/214 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 214/214 transitions.
Applied a total of 0 rules in 2 ms. Remains 86 /86 variables (removed 0) and now considering 214/214 (removed 0) transitions.
[2026-05-25 09:28:11] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:28:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:28:11] [INFO ] Implicit Places using invariants in 72 ms returned []
[2026-05-25 09:28:11] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:28:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:28:12] [INFO ] State equation strengthened by 19 read => feed constraints.
[2026-05-25 09:28:12] [INFO ] Implicit Places using invariants and state equation in 182 ms returned []
Implicit Place search using SMT with State Equation took 256 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:28:12] [INFO ] Redundant transitions in 1 ms returned []
Running 212 sub problems to find dead transitions.
[2026-05-25 09:28:12] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:28:12] [INFO ] Invariant cache hit.
[2026-05-25 09:28:12] [INFO ] State equation strengthened by 19 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (OVERLAPS) 133/218 variables, 85/88 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 19/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (OVERLAPS) 1/219 variables, 1/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/219 variables, 0/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (OVERLAPS) 0/219 variables, 0/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
No progress, stopping.
After SMT solving in domain Real declared 219/219 variables, and 108 constraints, problems are : Problem set: 0 solved, 212 unsolved in 8249 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 19/19 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (OVERLAPS) 133/218 variables, 85/88 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 19/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 32/139 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/218 variables, 0/139 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 6 (OVERLAPS) 1/219 variables, 1/140 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 180/320 constraints. Problems are: Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:28:33] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/219 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 10 (OVERLAPS) 0/219 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
No progress, stopping.
After SMT solving in domain Int declared 219/219 variables, and 321 constraints, problems are : Problem set: 0 solved, 212 unsolved in 30024 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 19/19 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 38324ms problems are : Problem set: 0 solved, 212 unsolved
Search for dead transitions found 0 dead transitions in 38324ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38593 ms. Remains : 86/86 places, 214/214 transitions.
[2026-05-25 09:28:50] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 62=1, 94=1, 128=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {30=1, 65=1, 97=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 1) seen :[27]
Current structural bounds on expressions (after cover walk) : Max Seen:[90560] Max Struct:[+inf]
[2026-05-25 09:28:50] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:28:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[90560] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1136 ms. (879 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 638 ms. (1564 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[90560] Max Struct:[+inf]
[2026-05-25 09:28:52] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:28:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:28:52] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-25 09:28:52] [INFO ] [Real]Absence check using state equation in 29 ms returned sat
[2026-05-25 09:28:52] [INFO ] State equation strengthened by 19 read => feed constraints.
[2026-05-25 09:28:52] [INFO ] [Real]Added 19 Read/Feed constraints in 3 ms returned sat
[2026-05-25 09:28:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 09:28:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2026-05-25 09:28:52] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-25 09:28:52] [INFO ] [Nat]Added 19 Read/Feed constraints in 4 ms returned sat
[2026-05-25 09:28:52] [INFO ] Computed and/alt/rep : 63/212/57 causal constraints (skipped 74 transitions) in 10 ms.
[2026-05-25 09:28:52] [INFO ] Added : 18 causal constraints over 4 iterations in 45 ms. Result :sat
Minimization took 30 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[90560] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[151991] Max Struct:[+inf]
Support contains 1 out of 86 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 86 /86 variables (removed 0) and now considering 214/214 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 86/86 places, 214/214 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 86/86 places, 214/214 transitions.
Applied a total of 0 rules in 2 ms. Remains 86 /86 variables (removed 0) and now considering 214/214 (removed 0) transitions.
[2026-05-25 09:29:22] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:29:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:29:22] [INFO ] Implicit Places using invariants in 141 ms returned []
[2026-05-25 09:29:22] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:29:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 09:29:22] [INFO ] State equation strengthened by 19 read => feed constraints.
[2026-05-25 09:29:22] [INFO ] Implicit Places using invariants and state equation in 176 ms returned []
Implicit Place search using SMT with State Equation took 340 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 09:29:22] [INFO ] Redundant transitions in 1 ms returned []
Running 212 sub problems to find dead transitions.
[2026-05-25 09:29:22] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:29:22] [INFO ] Invariant cache hit.
[2026-05-25 09:29:22] [INFO ] State equation strengthened by 19 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (OVERLAPS) 133/218 variables, 85/88 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 19/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 0/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (OVERLAPS) 1/219 variables, 1/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/219 variables, 0/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (OVERLAPS) 0/219 variables, 0/108 constraints. Problems are: Problem set: 0 solved, 212 unsolved
No progress, stopping.
After SMT solving in domain Real declared 219/219 variables, and 108 constraints, problems are : Problem set: 0 solved, 212 unsolved in 8333 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 19/19 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (OVERLAPS) 133/218 variables, 85/88 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 19/107 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 32/139 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/218 variables, 0/139 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 6 (OVERLAPS) 1/219 variables, 1/140 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 180/320 constraints. Problems are: Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 09:29:44] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 1 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/219 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 10 (OVERLAPS) 0/219 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 212 unsolved
No progress, stopping.
After SMT solving in domain Int declared 219/219 variables, and 321 constraints, problems are : Problem set: 0 solved, 212 unsolved in 30015 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 86/86 constraints, ReadFeed: 19/19 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 38396ms problems are : Problem set: 0 solved, 212 unsolved
Search for dead transitions found 0 dead transitions in 38398ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38746 ms. Remains : 86/86 places, 214/214 transitions.
[2026-05-25 09:30:01] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {27=1, 62=1, 94=1, 128=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 3 ms.
This minimized invariant on transitions {30=1, 65=1, 97=1, 128=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 1) seen :[2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf] Max Struct:[+inf]
[2026-05-25 09:30:01] [INFO ] Flow matrix only has 133 transitions (discarded 81 similar events)
[2026-05-25 09:30:01] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[+inf] Max Struct:[+inf]
RANDOM walk for 1000011 steps (2 resets) in 1121 ms. (891 steps per ms)
FORMULA FunctionPointer-PT-b016-UpperBounds-12 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 0 steps (0 resets) in 0 ms. (0 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2026-05-25 09:30:02] [INFO ] Flatten gal took : 17 ms
[2026-05-25 09:30:02] [INFO ] Flatten gal took : 6 ms
[2026-05-25 09:30:02] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2821539310679655910.gal : 2 ms
[2026-05-25 09:30:02] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14216004005708208777.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/ReachabilityCardinality2821539310679655910.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14216004005708208777.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
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:[] Max Struct:[]
Ending property specific reduction for FunctionPointer-PT-b016-UpperBounds-12 in 174043 ms.
[2026-05-25 09:30:02] [INFO ] Flatten gal took : 7 ms
[2026-05-25 09:30:02] [INFO ] Applying decomposition
[2026-05-25 09:30:02] [INFO ] Flatten gal took : 9 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph17616930631533799115.txt' '-o' '/tmp/graph17616930631533799115.bin' '-w' '/tmp/graph17616930631533799115.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph17616930631533799115.bin' '-l' '-1' '-v' '-w' '/tmp/graph17616930631533799115.weights' '-q' '0' '-e' '0.001'
[2026-05-25 09:30:02] [INFO ] Decomposing Gal with order
[2026-05-25 09:30:02] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 09:30:02] [INFO ] Removed a total of 464 redundant transitions.
[2026-05-25 09:30:02] [INFO ] Flatten gal took : 14 ms
[2026-05-25 09:30:02] [INFO ] Fuse similar labels procedure discarded/fused a total of 153 labels/synchronizations in 5 ms.
[2026-05-25 09:30:02] [INFO ] Time to serialize gal into /tmp/UpperBounds13397726242882630764.gal : 2 ms
[2026-05-25 09:30:02] [INFO ] Time to serialize properties into /tmp/UpperBounds9866597659844187303.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/UpperBounds13397726242882630764.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds9866597659844187303.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...284
Loading property file /tmp/UpperBounds9866597659844187303.prop.
Detected timeout of ITS tools.
[2026-05-25 09:58:23] [INFO ] Flatten gal took : 162 ms
[2026-05-25 09:58:24] [INFO ] Time to serialize gal into /tmp/UpperBounds8418640000319526657.gal : 54 ms
[2026-05-25 09:58:24] [INFO ] Time to serialize properties into /tmp/UpperBounds2603496445700740400.prop : 6 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/UpperBounds8418640000319526657.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds2603496445700740400.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...304
Loading property file /tmp/UpperBounds2603496445700740400.prop.

BK_TIME_CONFINEMENT_REACHED

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

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

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="FunctionPointer-PT-b016"
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 FunctionPointer-PT-b016, 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 r159-tall-177961079700011"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FunctionPointer-PT-b016.tgz
mv FunctionPointer-PT-b016 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 ;