About the Execution of 2025-gold for FunctionPointer-PT-c002
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-177961079800015.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.............
=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is FunctionPointer-PT-c002, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r159-tall-177961079800015
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 4.6M
-rw-r--r-- 1 mcc users 6.9K Mar 7 07:29 CTLCardinality.txt
-rw-r--r-- 1 mcc users 69K Mar 7 07:29 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.8K Mar 7 07:29 CTLFireability.txt
-rw-r--r-- 1 mcc users 50K Mar 7 07:29 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.1K Mar 15 10:24 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Mar 15 10:24 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 10:25 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 10:25 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.3K Mar 7 07:29 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 93K Mar 7 07:29 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Mar 7 07:29 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 94K Mar 7 07:29 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:25 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 10:25 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 4.2M 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-c002-UpperBounds-00
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-01
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-02
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-03
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-04
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-05
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-06
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-07
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-08
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-09
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-10
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-11
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-12
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-13
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-14
FORMULA_NAME FunctionPointer-PT-c002-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1779703549807
Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FunctionPointer-PT-c002
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-25 10:05:51] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-25 10:05:51] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 10:05:51] [INFO ] Load time of PNML (sax parser for PT used): 385 ms
[2026-05-25 10:05:51] [INFO ] Transformed 2826 places.
[2026-05-25 10:05:51] [INFO ] Transformed 8960 transitions.
[2026-05-25 10:05:51] [INFO ] Parsed PT model containing 2826 places and 8960 transitions and 36096 arcs in 515 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Deduced a syphon composed of 1198 places in 45 ms
Reduce places removed 1198 places and 2998 transitions.
FORMULA FunctionPointer-PT-c002-UpperBounds-03 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-c002-UpperBounds-07 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-c002-UpperBounds-08 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-c002-UpperBounds-10 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-c002-UpperBounds-11 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:51] [INFO ] Flow matrix only has 3540 transitions (discarded 2422 similar events)
// Phase 1: matrix 3540 rows 1628 cols
[2026-05-25 10:05:52] [INFO ] Computed 4 invariants in 120 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf, 1, +inf]
RANDOM walk for 10000 steps (2 resets) in 380 ms. (26 steps per ms)
FORMULA FunctionPointer-PT-c002-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 100010 steps (20 resets) in 299 ms. (333 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2, 1, 0, 2, 1, 1, 2, 2, 1, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:05:52] [INFO ] Flow matrix only has 3540 transitions (discarded 2422 similar events)
[2026-05-25 10:05:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using 3 positive place invariants in 17 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 10:05:53] [INFO ] [Real]Absence check using state equation in 804 ms returned sat
[2026-05-25 10:05:54] [INFO ] State equation strengthened by 479 read => feed constraints.
[2026-05-25 10:05:54] [INFO ] [Real]Added 479 Read/Feed constraints in 178 ms returned sat
[2026-05-25 10:05:54] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 15 ms returned sat
[2026-05-25 10:05:54] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Absence check using state equation in 742 ms returned sat
[2026-05-25 10:05:55] [INFO ] [Nat]Added 479 Read/Feed constraints in 160 ms returned sat
[2026-05-25 10:05:56] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 873 ms.
[2026-05-25 10:05:57] [INFO ] Added : 1 causal constraints over 1 iterations in 1384 ms. Result :sat
Minimization took 583 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:58] [INFO ] [Real]Absence check using 3 positive place invariants in 13 ms returned sat
[2026-05-25 10:05:58] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:05:58] [INFO ] [Real]Absence check using state equation in 752 ms returned sat
[2026-05-25 10:05:58] [INFO ] [Real]Added 479 Read/Feed constraints in 116 ms returned sat
[2026-05-25 10:05:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:05:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:05:59] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:05:59] [INFO ] [Nat]Absence check using state equation in 654 ms returned sat
[2026-05-25 10:06:00] [INFO ] [Nat]Added 479 Read/Feed constraints in 161 ms returned sat
[2026-05-25 10:06:01] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 922 ms.
[2026-05-25 10:06:01] [INFO ] Added : 0 causal constraints over 0 iterations in 1169 ms. Result :sat
Minimization took 578 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:02] [INFO ] [Real]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:02] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:02] [INFO ] [Real]Absence check using state equation in 747 ms returned sat
[2026-05-25 10:06:03] [INFO ] [Real]Added 479 Read/Feed constraints in 180 ms returned sat
[2026-05-25 10:06:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:03] [INFO ] [Nat]Absence check using 3 positive place invariants in 15 ms returned sat
[2026-05-25 10:06:03] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Absence check using state equation in 698 ms returned sat
[2026-05-25 10:06:04] [INFO ] [Nat]Added 479 Read/Feed constraints in 219 ms returned sat
[2026-05-25 10:06:04] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 485 ms.
[2026-05-25 10:06:05] [INFO ] Added : 2 causal constraints over 1 iterations in 860 ms. Result :sat
Minimization took 578 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 3 positive place invariants in 13 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Absence check using state equation in 712 ms returned sat
[2026-05-25 10:06:06] [INFO ] [Real]Added 479 Read/Feed constraints in 190 ms returned sat
[2026-05-25 10:06:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:07] [INFO ] [Nat]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:07] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:08] [INFO ] [Nat]Absence check using state equation in 746 ms returned sat
[2026-05-25 10:06:08] [INFO ] [Nat]Added 479 Read/Feed constraints in 275 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:09] [INFO ] Deduced a trap composed of 133 places in 1415 ms of which 244 ms to minimize.
[2026-05-25 10:06:09] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 1638 ms
[2026-05-25 10:06:10] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 508 ms.
[2026-05-25 10:06:10] [INFO ] Added : 1 causal constraints over 1 iterations in 904 ms. Result :sat
Minimization took 577 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:11] [INFO ] [Real]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:11] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Real]Absence check using state equation in 731 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Real]Added 479 Read/Feed constraints in 115 ms returned sat
[2026-05-25 10:06:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:12] [INFO ] [Nat]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:12] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 3 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Absence check using state equation in 669 ms returned sat
[2026-05-25 10:06:13] [INFO ] [Nat]Added 479 Read/Feed constraints in 102 ms returned sat
[2026-05-25 10:06:14] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 510 ms.
[2026-05-25 10:06:14] [INFO ] Added : 2 causal constraints over 1 iterations in 866 ms. Result :sat
Minimization took 578 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:15] [INFO ] [Real]Absence check using state equation in 689 ms returned sat
[2026-05-25 10:06:16] [INFO ] [Real]Added 479 Read/Feed constraints in 137 ms returned sat
[2026-05-25 10:06:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 13 ms returned sat
[2026-05-25 10:06:16] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:17] [INFO ] [Nat]Absence check using state equation in 714 ms returned sat
[2026-05-25 10:06:17] [INFO ] [Nat]Added 479 Read/Feed constraints in 145 ms returned sat
[2026-05-25 10:06:17] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 489 ms.
[2026-05-25 10:06:18] [INFO ] Added : 2 causal constraints over 1 iterations in 834 ms. Result :sat
Minimization took 574 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:19] [INFO ] [Real]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:19] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:19] [INFO ] [Real]Absence check using state equation in 704 ms returned sat
[2026-05-25 10:06:19] [INFO ] [Real]Added 479 Read/Feed constraints in 96 ms returned sat
[2026-05-25 10:06:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:20] [INFO ] [Nat]Absence check using 3 positive place invariants in 19 ms returned sat
[2026-05-25 10:06:20] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-25 10:06:20] [INFO ] [Nat]Absence check using state equation in 662 ms returned sat
[2026-05-25 10:06:20] [INFO ] [Nat]Added 479 Read/Feed constraints in 156 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:22] [INFO ] Deduced a trap composed of 133 places in 1421 ms of which 233 ms to minimize.
[2026-05-25 10:06:22] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 1608 ms
[2026-05-25 10:06:23] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 558 ms.
[2026-05-25 10:06:23] [INFO ] Added : 2 causal constraints over 1 iterations in 924 ms. Result :sat
Minimization took 575 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:24] [INFO ] [Real]Absence check using 3 positive place invariants in 13 ms returned sat
[2026-05-25 10:06:24] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:24] [INFO ] [Real]Absence check using state equation in 679 ms returned sat
[2026-05-25 10:06:25] [INFO ] [Real]Added 479 Read/Feed constraints in 105 ms returned sat
[2026-05-25 10:06:25] [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 10:06:25] [INFO ] [Nat]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:25] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:26] [INFO ] [Nat]Absence check using state equation in 711 ms returned sat
[2026-05-25 10:06:26] [INFO ] [Nat]Added 479 Read/Feed constraints in 117 ms returned sat
[2026-05-25 10:06:26] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 490 ms.
[2026-05-25 10:06:27] [INFO ] Added : 2 causal constraints over 1 iterations in 828 ms. Result :sat
Minimization took 578 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:27] [INFO ] [Real]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:27] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:28] [INFO ] [Real]Absence check using state equation in 723 ms returned sat
[2026-05-25 10:06:28] [INFO ] [Real]Added 479 Read/Feed constraints in 138 ms returned sat
[2026-05-25 10:06:28] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:29] [INFO ] [Nat]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:29] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:29] [INFO ] [Nat]Absence check using state equation in 734 ms returned sat
[2026-05-25 10:06:29] [INFO ] [Nat]Added 479 Read/Feed constraints in 98 ms returned sat
[2026-05-25 10:06:30] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 500 ms.
[2026-05-25 10:06:30] [INFO ] Added : 1 causal constraints over 1 iterations in 860 ms. Result :sat
Minimization took 576 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:31] [INFO ] [Real]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:31] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Real]Absence check using state equation in 732 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Real]Added 479 Read/Feed constraints in 125 ms returned sat
[2026-05-25 10:06:32] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:06:32] [INFO ] [Nat]Absence check using 3 positive place invariants in 14 ms returned sat
[2026-05-25 10:06:32] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Absence check using state equation in 710 ms returned sat
[2026-05-25 10:06:33] [INFO ] [Nat]Added 479 Read/Feed constraints in 106 ms returned sat
[2026-05-25 10:06:34] [INFO ] Computed and/alt/rep : 351/504/351 causal constraints (skipped 3187 transitions) in 505 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:35] [INFO ] Deduced a trap composed of 133 places in 1395 ms of which 237 ms to minimize.
[2026-05-25 10:06:36] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 1685 ms
[2026-05-25 10:06:36] [INFO ] Added : 2 causal constraints over 1 iterations in 2640 ms. Result :sat
Minimization took 577 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2, 1, 0, 2, 1, 1, 2, 2, 1, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2, 1, 0, 2, 1, 1, 2, 2, 1, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 10 out of 1628 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 1628/1628 places, 5962/5962 transitions.
Graph (complete) has 7332 edges and 1628 vertex of which 1422 are kept as prefixes of interest. Removing 206 places using SCC suffix rule.12 ms
Discarding 206 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 379 transitions
Reduce isomorphic transitions removed 379 transitions.
Iterating post reduction 0 with 379 rules applied. Total rules applied 380 place count 1422 transition count 5583
Discarding 298 places :
Symmetric choice reduction at 1 with 298 rule applications. Total rules 678 place count 1124 transition count 3319
Iterating global reduction 1 with 298 rules applied. Total rules applied 976 place count 1124 transition count 3319
Ensure Unique test removed 368 transitions
Reduce isomorphic transitions removed 368 transitions.
Iterating post reduction 1 with 368 rules applied. Total rules applied 1344 place count 1124 transition count 2951
Discarding 156 places :
Symmetric choice reduction at 2 with 156 rule applications. Total rules 1500 place count 968 transition count 2639
Iterating global reduction 2 with 156 rules applied. Total rules applied 1656 place count 968 transition count 2639
Ensure Unique test removed 72 transitions
Reduce isomorphic transitions removed 72 transitions.
Iterating post reduction 2 with 72 rules applied. Total rules applied 1728 place count 968 transition count 2567
Discarding 14 places :
Symmetric choice reduction at 3 with 14 rule applications. Total rules 1742 place count 954 transition count 2539
Iterating global reduction 3 with 14 rules applied. Total rules applied 1756 place count 954 transition count 2539
Discarding 13 places :
Symmetric choice reduction at 3 with 13 rule applications. Total rules 1769 place count 941 transition count 2513
Iterating global reduction 3 with 13 rules applied. Total rules applied 1782 place count 941 transition count 2513
Discarding 13 places :
Symmetric choice reduction at 3 with 13 rule applications. Total rules 1795 place count 928 transition count 2487
Iterating global reduction 3 with 13 rules applied. Total rules applied 1808 place count 928 transition count 2487
Discarding 13 places :
Symmetric choice reduction at 3 with 13 rule applications. Total rules 1821 place count 915 transition count 2461
Iterating global reduction 3 with 13 rules applied. Total rules applied 1834 place count 915 transition count 2461
Discarding 13 places :
Symmetric choice reduction at 3 with 13 rule applications. Total rules 1847 place count 902 transition count 2435
Iterating global reduction 3 with 13 rules applied. Total rules applied 1860 place count 902 transition count 2435
Discarding 12 places :
Symmetric choice reduction at 3 with 12 rule applications. Total rules 1872 place count 890 transition count 2411
Iterating global reduction 3 with 12 rules applied. Total rules applied 1884 place count 890 transition count 2411
Discarding 12 places :
Symmetric choice reduction at 3 with 12 rule applications. Total rules 1896 place count 878 transition count 2387
Iterating global reduction 3 with 12 rules applied. Total rules applied 1908 place count 878 transition count 2387
Discarding 43 places :
Symmetric choice reduction at 3 with 43 rule applications. Total rules 1951 place count 835 transition count 2229
Iterating global reduction 3 with 43 rules applied. Total rules applied 1994 place count 835 transition count 2229
Discarding 57 places :
Symmetric choice reduction at 3 with 57 rule applications. Total rules 2051 place count 778 transition count 2001
Iterating global reduction 3 with 57 rules applied. Total rules applied 2108 place count 778 transition count 2001
Discarding 57 places :
Symmetric choice reduction at 3 with 57 rule applications. Total rules 2165 place count 721 transition count 1845
Iterating global reduction 3 with 57 rules applied. Total rules applied 2222 place count 721 transition count 1845
Discarding 57 places :
Symmetric choice reduction at 3 with 57 rule applications. Total rules 2279 place count 664 transition count 1731
Iterating global reduction 3 with 57 rules applied. Total rules applied 2336 place count 664 transition count 1731
Discarding 56 places :
Symmetric choice reduction at 3 with 56 rule applications. Total rules 2392 place count 608 transition count 1619
Iterating global reduction 3 with 56 rules applied. Total rules applied 2448 place count 608 transition count 1619
Discarding 56 places :
Symmetric choice reduction at 3 with 56 rule applications. Total rules 2504 place count 552 transition count 1507
Iterating global reduction 3 with 56 rules applied. Total rules applied 2560 place count 552 transition count 1507
Discarding 56 places :
Symmetric choice reduction at 3 with 56 rule applications. Total rules 2616 place count 496 transition count 1395
Iterating global reduction 3 with 56 rules applied. Total rules applied 2672 place count 496 transition count 1395
Discarding 20 places :
Symmetric choice reduction at 3 with 20 rule applications. Total rules 2692 place count 476 transition count 1355
Iterating global reduction 3 with 20 rules applied. Total rules applied 2712 place count 476 transition count 1355
Drop transitions (Redundant composition of simpler transitions.) removed 14 transitions
Redundant transition composition rules discarded 14 transitions
Iterating global reduction 3 with 14 rules applied. Total rules applied 2726 place count 476 transition count 1341
Applied a total of 2726 rules in 1082 ms. Remains 476 /1628 variables (removed 1152) and now considering 1341/5962 (removed 4621) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1095 ms. Remains : 476/1628 places, 1341/5962 transitions.
[2026-05-25 10:06:38] [INFO ] Flow matrix only has 778 transitions (discarded 563 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {207=1, 347=1, 553=1, 760=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 3 ms.
This minimized invariant on transitions {206=1, 346=1, 552=1, 762=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 113 ms. (steps per millisecond=88 ) properties (out of 10) seen :[0, 1, 1, 0, 2, 2147483647, 0, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[2, 1, 1, 2, 2, +inf, 2, 2, 1, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:38] [INFO ] Flow matrix only has 778 transitions (discarded 563 similar events)
// Phase 1: matrix 778 rows 476 cols
[2026-05-25 10:06:38] [INFO ] Computed 3 invariants in 12 ms
Current structural bounds on expressions (after invariants) : Max Seen:[2, 1, 1, 2, 2, +inf, 2, 2, 1, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000005 steps (2 resets) in 3024 ms. (330 steps per ms)
FORMULA FunctionPointer-PT-c002-UpperBounds-06 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 9000007 steps (18 resets) in 5774 ms. (1558 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 1, 2, 444, 2, 2, 6, 4, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:06:47] [INFO ] Flow matrix only has 778 transitions (discarded 563 similar events)
[2026-05-25 10:06:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:47] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Real]Absence check using state equation in 168 ms returned sat
[2026-05-25 10:06:47] [INFO ] State equation strengthened by 98 read => feed constraints.
[2026-05-25 10:06:47] [INFO ] [Real]Added 98 Read/Feed constraints in 35 ms returned sat
[2026-05-25 10:06:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Nat]Absence check using state equation in 165 ms returned sat
[2026-05-25 10:06:47] [INFO ] [Nat]Added 98 Read/Feed constraints in 42 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:48] [INFO ] Deduced a trap composed of 77 places in 253 ms of which 40 ms to minimize.
[2026-05-25 10:06:48] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 317 ms
[2026-05-25 10:06:48] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 77 ms.
[2026-05-25 10:06:48] [INFO ] Added : 1 causal constraints over 1 iterations in 168 ms. Result :sat
Minimization took 318 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:48] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:49] [INFO ] [Real]Absence check using state equation in 148 ms returned sat
[2026-05-25 10:06:49] [INFO ] [Real]Added 98 Read/Feed constraints in 30 ms returned sat
[2026-05-25 10:06:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:49] [INFO ] [Nat]Absence check using state equation in 139 ms returned sat
[2026-05-25 10:06:49] [INFO ] [Nat]Added 98 Read/Feed constraints in 28 ms returned sat
[2026-05-25 10:06:49] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 73 ms.
[2026-05-25 10:06:49] [INFO ] Added : 0 causal constraints over 0 iterations in 135 ms. Result :sat
Minimization took 263 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:49] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:49] [INFO ] [Real]Absence check using state equation in 142 ms returned sat
[2026-05-25 10:06:50] [INFO ] [Real]Added 98 Read/Feed constraints in 34 ms returned sat
[2026-05-25 10:06:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:50] [INFO ] [Nat]Absence check using state equation in 142 ms returned sat
[2026-05-25 10:06:50] [INFO ] [Nat]Added 98 Read/Feed constraints in 73 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:50] [INFO ] Deduced a trap composed of 77 places in 264 ms of which 46 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:50] [INFO ] Deduced a trap composed of 131 places in 178 ms of which 8 ms to minimize.
[2026-05-25 10:06:50] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 581 ms
[2026-05-25 10:06:50] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 79 ms.
[2026-05-25 10:06:51] [INFO ] Added : 2 causal constraints over 1 iterations in 206 ms. Result :sat
Minimization took 275 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:51] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:51] [INFO ] [Real]Absence check using state equation in 138 ms returned sat
[2026-05-25 10:06:51] [INFO ] [Real]Added 98 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:06:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 9 ms returned sat
[2026-05-25 10:06:51] [INFO ] [Nat]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:06:51] [INFO ] [Nat]Added 98 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:06:52] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 70 ms.
[2026-05-25 10:06:52] [INFO ] Added : 1 causal constraints over 1 iterations in 164 ms. Result :sat
Minimization took 299 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:52] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:52] [INFO ] [Real]Absence check using state equation in 149 ms returned sat
[2026-05-25 10:06:52] [INFO ] [Real]Added 98 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:06:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:52] [INFO ] [Nat]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:06:52] [INFO ] [Nat]Added 98 Read/Feed constraints in 38 ms returned sat
[2026-05-25 10:06:53] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 74 ms.
[2026-05-25 10:06:53] [INFO ] Added : 2 causal constraints over 1 iterations in 175 ms. Result :sat
Minimization took 270 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:53] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:53] [INFO ] [Real]Absence check using state equation in 152 ms returned sat
[2026-05-25 10:06:53] [INFO ] [Real]Added 98 Read/Feed constraints in 22 ms returned sat
[2026-05-25 10:06:53] [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 10:06:53] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:53] [INFO ] [Nat]Absence check using state equation in 149 ms returned sat
[2026-05-25 10:06:53] [INFO ] [Nat]Added 98 Read/Feed constraints in 22 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:54] [INFO ] Deduced a trap composed of 77 places in 271 ms of which 40 ms to minimize.
[2026-05-25 10:06:54] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 314 ms
[2026-05-25 10:06:54] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 73 ms.
[2026-05-25 10:06:54] [INFO ] Added : 2 causal constraints over 1 iterations in 177 ms. Result :sat
Minimization took 282 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:54] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:06:54] [INFO ] [Real]Absence check using state equation in 145 ms returned sat
[2026-05-25 10:06:55] [INFO ] [Real]Added 98 Read/Feed constraints in 30 ms returned sat
[2026-05-25 10:06:55] [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 10:06:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:55] [INFO ] [Nat]Absence check using state equation in 149 ms returned sat
[2026-05-25 10:06:55] [INFO ] [Nat]Added 98 Read/Feed constraints in 27 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:06:55] [INFO ] Deduced a trap composed of 77 places in 253 ms of which 39 ms to minimize.
[2026-05-25 10:06:55] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 302 ms
[2026-05-25 10:06:55] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 75 ms.
[2026-05-25 10:06:55] [INFO ] Added : 2 causal constraints over 1 iterations in 179 ms. Result :sat
Minimization took 276 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:56] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:56] [INFO ] [Real]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:06:56] [INFO ] [Real]Added 98 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:06:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 6 ms returned sat
[2026-05-25 10:06:56] [INFO ] [Nat]Absence check using state equation in 159 ms returned sat
[2026-05-25 10:06:56] [INFO ] [Nat]Added 98 Read/Feed constraints in 31 ms returned sat
[2026-05-25 10:06:56] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 82 ms.
[2026-05-25 10:06:56] [INFO ] Added : 1 causal constraints over 1 iterations in 171 ms. Result :sat
Minimization took 258 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:57] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:57] [INFO ] [Real]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:06:57] [INFO ] [Real]Added 98 Read/Feed constraints in 30 ms returned sat
[2026-05-25 10:06:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:06:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:06:57] [INFO ] [Nat]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:06:57] [INFO ] [Nat]Added 98 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:06:57] [INFO ] Computed and/alt/rep : 98/104/85 causal constraints (skipped 691 transitions) in 75 ms.
[2026-05-25 10:06:57] [INFO ] Added : 2 causal constraints over 1 iterations in 172 ms. Result :sat
Minimization took 256 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 1, 2, 444, 2, 2, 6, 4, 0] Max Struct:[+inf, 2, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
FORMULA FunctionPointer-PT-c002-UpperBounds-01 2 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 444, 2, 2, 6, 4, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 476 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 476/476 places, 1341/1341 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 475 transition count 1339
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 475 transition count 1339
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 4 place count 475 transition count 1337
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 5 place count 474 transition count 1335
Iterating global reduction 1 with 1 rules applied. Total rules applied 6 place count 474 transition count 1335
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 7 place count 473 transition count 1333
Iterating global reduction 1 with 1 rules applied. Total rules applied 8 place count 473 transition count 1333
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 9 place count 472 transition count 1329
Iterating global reduction 1 with 1 rules applied. Total rules applied 10 place count 472 transition count 1329
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 11 place count 471 transition count 1327
Iterating global reduction 1 with 1 rules applied. Total rules applied 12 place count 471 transition count 1327
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 13 place count 470 transition count 1325
Iterating global reduction 1 with 1 rules applied. Total rules applied 14 place count 470 transition count 1325
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 15 place count 469 transition count 1323
Iterating global reduction 1 with 1 rules applied. Total rules applied 16 place count 469 transition count 1323
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 17 place count 468 transition count 1321
Iterating global reduction 1 with 1 rules applied. Total rules applied 18 place count 468 transition count 1321
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 19 place count 467 transition count 1319
Iterating global reduction 1 with 1 rules applied. Total rules applied 20 place count 467 transition count 1319
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 21 place count 466 transition count 1317
Iterating global reduction 1 with 1 rules applied. Total rules applied 22 place count 466 transition count 1317
Applied a total of 22 rules in 170 ms. Remains 466 /476 variables (removed 10) and now considering 1317/1341 (removed 24) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 170 ms. Remains : 466/476 places, 1317/1341 transitions.
[2026-05-25 10:07:01] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {255=1, 263=1, 270=1, 385=1, 590=1, 748=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 382=1, 715=1, 756=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 97 ms. (steps per millisecond=103 ) properties (out of 8) seen :[0, 0, 0, 0, 0, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, 444, 2, 2, 6, 4, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:01] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
// Phase 1: matrix 762 rows 466 cols
[2026-05-25 10:07:01] [INFO ] Computed 3 invariants in 11 ms
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, 444, 2, 2, 6, 4, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2873 ms. (347 steps per ms)
BEST_FIRST walk for 8000008 steps (16 resets) in 5230 ms. (1529 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 2, 444, 2, 1325, 6, 1554, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:07:09] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:07:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:09] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:10] [INFO ] [Real]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:07:10] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:07:10] [INFO ] [Real]Added 95 Read/Feed constraints in 43 ms returned sat
[2026-05-25 10:07:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:10] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:10] [INFO ] [Nat]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:07:10] [INFO ] [Nat]Added 95 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:07:10] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 73 ms.
[2026-05-25 10:07:10] [INFO ] Added : 1 causal constraints over 1 iterations in 162 ms. Result :sat
Minimization took 264 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:10] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:07:11] [INFO ] [Real]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:07:11] [INFO ] [Real]Added 95 Read/Feed constraints in 39 ms returned sat
[2026-05-25 10:07:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:11] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:11] [INFO ] [Nat]Absence check using state equation in 136 ms returned sat
[2026-05-25 10:07:11] [INFO ] [Nat]Added 95 Read/Feed constraints in 55 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:11] [INFO ] Deduced a trap composed of 76 places in 259 ms of which 47 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:11] [INFO ] Deduced a trap composed of 131 places in 194 ms of which 8 ms to minimize.
[2026-05-25 10:07:12] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 538 ms
[2026-05-25 10:07:12] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:07:12] [INFO ] Added : 2 causal constraints over 1 iterations in 165 ms. Result :sat
Minimization took 274 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:12] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:12] [INFO ] [Real]Absence check using state equation in 148 ms returned sat
[2026-05-25 10:07:12] [INFO ] [Real]Added 95 Read/Feed constraints in 32 ms returned sat
[2026-05-25 10:07:12] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:12] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:12] [INFO ] [Nat]Absence check using state equation in 152 ms returned sat
[2026-05-25 10:07:12] [INFO ] [Nat]Added 95 Read/Feed constraints in 28 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:13] [INFO ] Deduced a trap composed of 76 places in 243 ms of which 39 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:13] [INFO ] Deduced a trap composed of 82 places in 248 ms of which 41 ms to minimize.
[2026-05-25 10:07:13] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 576 ms
[2026-05-25 10:07:13] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:07:13] [INFO ] Added : 4 causal constraints over 2 iterations in 221 ms. Result :sat
Minimization took 389 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:14] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:07:14] [INFO ] [Real]Absence check using state equation in 145 ms returned sat
[2026-05-25 10:07:14] [INFO ] [Real]Added 95 Read/Feed constraints in 23 ms returned sat
[2026-05-25 10:07:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:07:14] [INFO ] [Nat]Absence check using state equation in 139 ms returned sat
[2026-05-25 10:07:14] [INFO ] [Nat]Added 95 Read/Feed constraints in 36 ms returned sat
[2026-05-25 10:07:14] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 71 ms.
[2026-05-25 10:07:15] [INFO ] Added : 13 causal constraints over 4 iterations in 264 ms. Result :sat
Minimization took 265 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:15] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:07:15] [INFO ] [Real]Absence check using state equation in 148 ms returned sat
[2026-05-25 10:07:15] [INFO ] [Real]Added 95 Read/Feed constraints in 36 ms returned sat
[2026-05-25 10:07:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:15] [INFO ] [Nat]Absence check using state equation in 137 ms returned sat
[2026-05-25 10:07:15] [INFO ] [Nat]Added 95 Read/Feed constraints in 20 ms returned sat
[2026-05-25 10:07:15] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 71 ms.
[2026-05-25 10:07:16] [INFO ] Added : 7 causal constraints over 4 iterations in 257 ms. Result :sat
Minimization took 315 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:16] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:07:16] [INFO ] [Real]Absence check using state equation in 157 ms returned sat
[2026-05-25 10:07:16] [INFO ] [Real]Added 95 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:07:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:07:16] [INFO ] [Nat]Absence check using state equation in 137 ms returned sat
[2026-05-25 10:07:16] [INFO ] [Nat]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:07:17] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 81 ms.
[2026-05-25 10:07:17] [INFO ] Added : 5 causal constraints over 2 iterations in 224 ms. Result :sat
Minimization took 289 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:17] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:17] [INFO ] [Real]Absence check using state equation in 137 ms returned sat
[2026-05-25 10:07:17] [INFO ] [Real]Added 95 Read/Feed constraints in 41 ms returned sat
[2026-05-25 10:07:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:07:18] [INFO ] [Nat]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:07:18] [INFO ] [Nat]Added 95 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:07:18] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:07:18] [INFO ] Added : 1 causal constraints over 1 iterations in 156 ms. Result :sat
Minimization took 260 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:18] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:18] [INFO ] [Real]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:07:18] [INFO ] [Real]Added 95 Read/Feed constraints in 23 ms returned sat
[2026-05-25 10:07:18] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:07:18] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:07:19] [INFO ] [Nat]Absence check using state equation in 142 ms returned sat
[2026-05-25 10:07:19] [INFO ] [Nat]Added 95 Read/Feed constraints in 36 ms returned sat
[2026-05-25 10:07:19] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 71 ms.
[2026-05-25 10:07:19] [INFO ] Added : 11 causal constraints over 3 iterations in 238 ms. Result :sat
Minimization took 261 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 2, 444, 2, 1325, 6, 1554, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 444, 5, 1325, 6, 1554, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 466 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 56 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 56 ms. Remains : 466/466 places, 1317/1317 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 55 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
[2026-05-25 10:07:28] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:07:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:28] [INFO ] Implicit Places using invariants in 414 ms returned []
[2026-05-25 10:07:28] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:07:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:07:28] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:07:30] [INFO ] Implicit Places using invariants and state equation in 2202 ms returned []
Implicit Place search using SMT with State Equation took 2620 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:07:31] [INFO ] Redundant transitions in 91 ms returned []
Running 1315 sub problems to find dead transitions.
[2026-05-25 10:07:31] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:07:31] [INFO ] Invariant cache hit.
[2026-05-25 10:07:31] [INFO ] State equation strengthened by 95 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:07:43] [INFO ] Deduced a trap composed of 131 places in 164 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Broken pipe")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 466/1228 variables, and 4 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 30040 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/466 constraints, ReadFeed: 0/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/466 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 3 (OVERLAPS) 762/1228 variables, 466/470 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1228 variables, 95/565 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1228/1228 variables, and 1880 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 30954 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 466/466 constraints, ReadFeed: 95/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 63167ms problems are : Problem set: 0 solved, 1315 unsolved
Search for dead transitions found 0 dead transitions in 63186ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 65977 ms. Remains : 466/466 places, 1317/1317 transitions.
[2026-05-25 10:08:34] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {255=1, 263=1, 270=1, 385=1, 590=1, 748=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {252=1, 382=1, 715=1, 756=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 41 ms. (steps per millisecond=243 ) properties (out of 8) seen :[0, 0, 0, 0, 3, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, 444, 5, 1325, 6, 1554, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:34] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:08:34] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, 444, 5, 1325, 6, 1554, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000005 steps (2 resets) in 2846 ms. (351 steps per ms)
BEST_FIRST walk for 8000007 steps (16 resets) in 5273 ms. (1516 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 4] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:08:42] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:08:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:42] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:42] [INFO ] [Real]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:08:42] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:08:42] [INFO ] [Real]Added 95 Read/Feed constraints in 30 ms returned sat
[2026-05-25 10:08:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Absence check using state equation in 133 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Nat]Added 95 Read/Feed constraints in 23 ms returned sat
[2026-05-25 10:08:43] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 95 ms.
[2026-05-25 10:08:43] [INFO ] Added : 1 causal constraints over 1 iterations in 174 ms. Result :sat
Minimization took 253 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Absence check using state equation in 138 ms returned sat
[2026-05-25 10:08:43] [INFO ] [Real]Added 95 Read/Feed constraints in 39 ms returned sat
[2026-05-25 10:08:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:08:44] [INFO ] [Nat]Added 95 Read/Feed constraints in 55 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:44] [INFO ] Deduced a trap composed of 76 places in 273 ms of which 45 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:44] [INFO ] Deduced a trap composed of 131 places in 175 ms of which 8 ms to minimize.
[2026-05-25 10:08:44] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 530 ms
[2026-05-25 10:08:44] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 74 ms.
[2026-05-25 10:08:44] [INFO ] Added : 2 causal constraints over 1 iterations in 172 ms. Result :sat
Minimization took 274 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Absence check using state equation in 144 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Real]Added 95 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:08:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Absence check using state equation in 154 ms returned sat
[2026-05-25 10:08:45] [INFO ] [Nat]Added 95 Read/Feed constraints in 30 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:46] [INFO ] Deduced a trap composed of 76 places in 252 ms of which 38 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:08:46] [INFO ] Deduced a trap composed of 82 places in 241 ms of which 40 ms to minimize.
[2026-05-25 10:08:46] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 564 ms
[2026-05-25 10:08:46] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 73 ms.
[2026-05-25 10:08:46] [INFO ] Added : 4 causal constraints over 2 iterations in 221 ms. Result :sat
Minimization took 375 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:47] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:47] [INFO ] [Real]Absence check using state equation in 147 ms returned sat
[2026-05-25 10:08:47] [INFO ] [Real]Added 95 Read/Feed constraints in 28 ms returned sat
[2026-05-25 10:08:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:47] [INFO ] [Nat]Absence check using state equation in 145 ms returned sat
[2026-05-25 10:08:47] [INFO ] [Nat]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:08:47] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 75 ms.
[2026-05-25 10:08:47] [INFO ] Added : 13 causal constraints over 4 iterations in 282 ms. Result :sat
Minimization took 278 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:48] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:08:48] [INFO ] [Real]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:08:48] [INFO ] [Real]Added 95 Read/Feed constraints in 34 ms returned sat
[2026-05-25 10:08:48] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:08:48] [INFO ] [Nat]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:08:48] [INFO ] [Nat]Added 95 Read/Feed constraints in 21 ms returned sat
[2026-05-25 10:08:48] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 74 ms.
[2026-05-25 10:08:48] [INFO ] Added : 7 causal constraints over 4 iterations in 263 ms. Result :sat
Minimization took 317 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:49] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:49] [INFO ] [Real]Absence check using state equation in 151 ms returned sat
[2026-05-25 10:08:49] [INFO ] [Real]Added 95 Read/Feed constraints in 47 ms returned sat
[2026-05-25 10:08:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:49] [INFO ] [Nat]Absence check using state equation in 146 ms returned sat
[2026-05-25 10:08:49] [INFO ] [Nat]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:08:49] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 73 ms.
[2026-05-25 10:08:50] [INFO ] Added : 5 causal constraints over 2 iterations in 212 ms. Result :sat
Minimization took 293 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:50] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:50] [INFO ] [Real]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:08:50] [INFO ] [Real]Added 95 Read/Feed constraints in 42 ms returned sat
[2026-05-25 10:08:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:50] [INFO ] [Nat]Absence check using state equation in 147 ms returned sat
[2026-05-25 10:08:50] [INFO ] [Nat]Added 95 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:08:51] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 74 ms.
[2026-05-25 10:08:51] [INFO ] Added : 1 causal constraints over 1 iterations in 183 ms. Result :sat
Minimization took 249 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:51] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:51] [INFO ] [Real]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:08:51] [INFO ] [Real]Added 95 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:08:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:08:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:08:51] [INFO ] [Nat]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:08:51] [INFO ] [Nat]Added 95 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:08:51] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 74 ms.
[2026-05-25 10:08:52] [INFO ] Added : 12 causal constraints over 4 iterations in 273 ms. Result :sat
Minimization took 277 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 4] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 4] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 466 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 60 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 60 ms. Remains : 466/466 places, 1317/1317 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 58 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
[2026-05-25 10:09:29] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:09:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:29] [INFO ] Implicit Places using invariants in 336 ms returned []
[2026-05-25 10:09:29] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:09:29] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:09:29] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:09:31] [INFO ] Implicit Places using invariants and state equation in 2085 ms returned []
Implicit Place search using SMT with State Equation took 2424 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:09:31] [INFO ] Redundant transitions in 75 ms returned []
Running 1315 sub problems to find dead transitions.
[2026-05-25 10:09:31] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:09:31] [INFO ] Invariant cache hit.
[2026-05-25 10:09:31] [INFO ] State equation strengthened by 95 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:09:42] [INFO ] Deduced a trap composed of 131 places in 154 ms of which 6 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Error getting values : (error "ParserException while parsing response: ((s0 0.0)
(s1 1.0)
(s2 0.0)
(s3 0.0)
(s4 0.0)
(s5 0.0)
(s6 0.0)
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(s8 0.0)
(s9 0.0)
(s10 0.0)
(s11 0.0)
(s12 0.0)
(s13 0.0)
(s14 0.0)
(s15 0.0)
(s16 0.0)
(s17 0.0)
(s18 0.0)
(s19 0.0)
(s20 0.0)
(s21 0.0)
(s22 0.0)
(s23 0.0)
(s24 0.0)
(s25 0.0)
(s26 0.0)
(s27 0.0)
(s28 0.0)
(s29 0.0)
(s30 0.0)
(s31 0.0)
(s32 0.0)
(s33 0.0)
(s34 0.0)
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(s38 0.0)
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(s40 0.0)
(s41 0.0)
(s42 0.0)
(s43 0.0)
(s44 0.0)
(s45 0.0)
(s46 0.0)
(s47 0.0)
(s48 0.0)
(s49 0.0)
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(s52 0.0)
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(s56 0.0)
(s57 0.0)
(s58 0.0)
(s59 0.0)
(s60 0.0)
(s61 0.0)
(s62 0.0)
(s63 0.0)
(s64 0.0)
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(s66 0.0)
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(s75 timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 466/1228 variables, and 4 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 30030 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/466 constraints, ReadFeed: 0/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/466 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 3 (OVERLAPS) 762/1228 variables, 466/470 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1228 variables, 95/565 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1228/1228 variables, and 1880 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 30912 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 466/466 constraints, ReadFeed: 95/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62611ms problems are : Problem set: 0 solved, 1315 unsolved
Search for dead transitions found 0 dead transitions in 62614ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 65185 ms. Remains : 466/466 places, 1317/1317 transitions.
[2026-05-25 10:10:34] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {255=1, 263=1, 270=1, 385=1, 590=1, 748=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 382=1, 715=1, 756=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 59 ms. (steps per millisecond=169 ) properties (out of 8) seen :[0, 0, 0, 0, 0, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 4] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:34] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:10:34] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 4] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2945 ms. (339 steps per ms)
BEST_FIRST walk for 8000005 steps (16 resets) in 5202 ms. (1537 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 443] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:10:43] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:10:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:43] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Real]Absence check using state equation in 168 ms returned sat
[2026-05-25 10:10:43] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:10:43] [INFO ] [Real]Added 95 Read/Feed constraints in 38 ms returned sat
[2026-05-25 10:10:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Nat]Absence check using state equation in 163 ms returned sat
[2026-05-25 10:10:43] [INFO ] [Nat]Added 95 Read/Feed constraints in 31 ms returned sat
[2026-05-25 10:10:43] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 78 ms.
[2026-05-25 10:10:43] [INFO ] Added : 1 causal constraints over 1 iterations in 182 ms. Result :sat
Minimization took 286 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:44] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:10:44] [INFO ] [Real]Absence check using state equation in 154 ms returned sat
[2026-05-25 10:10:44] [INFO ] [Real]Added 95 Read/Feed constraints in 39 ms returned sat
[2026-05-25 10:10:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:44] [INFO ] [Nat]Absence check using state equation in 142 ms returned sat
[2026-05-25 10:10:44] [INFO ] [Nat]Added 95 Read/Feed constraints in 56 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:45] [INFO ] Deduced a trap composed of 76 places in 260 ms of which 46 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:45] [INFO ] Deduced a trap composed of 131 places in 177 ms of which 8 ms to minimize.
[2026-05-25 10:10:45] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 526 ms
[2026-05-25 10:10:45] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 79 ms.
[2026-05-25 10:10:45] [INFO ] Added : 2 causal constraints over 1 iterations in 169 ms. Result :sat
Minimization took 291 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:45] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:10:46] [INFO ] [Real]Absence check using state equation in 144 ms returned sat
[2026-05-25 10:10:46] [INFO ] [Real]Added 95 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:10:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:46] [INFO ] [Nat]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:10:46] [INFO ] [Nat]Added 95 Read/Feed constraints in 29 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:46] [INFO ] Deduced a trap composed of 76 places in 265 ms of which 39 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:10:46] [INFO ] Deduced a trap composed of 82 places in 248 ms of which 41 ms to minimize.
[2026-05-25 10:10:46] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 590 ms
[2026-05-25 10:10:46] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 75 ms.
[2026-05-25 10:10:47] [INFO ] Added : 4 causal constraints over 2 iterations in 213 ms. Result :sat
Minimization took 407 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:47] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:10:47] [INFO ] [Real]Absence check using state equation in 155 ms returned sat
[2026-05-25 10:10:47] [INFO ] [Real]Added 95 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:10:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:48] [INFO ] [Nat]Absence check using state equation in 152 ms returned sat
[2026-05-25 10:10:48] [INFO ] [Nat]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:10:48] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 74 ms.
[2026-05-25 10:10:48] [INFO ] Added : 13 causal constraints over 4 iterations in 266 ms. Result :sat
Minimization took 297 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:48] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:10:48] [INFO ] [Real]Absence check using state equation in 153 ms returned sat
[2026-05-25 10:10:48] [INFO ] [Real]Added 95 Read/Feed constraints in 35 ms returned sat
[2026-05-25 10:10:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:49] [INFO ] [Nat]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:10:49] [INFO ] [Nat]Added 95 Read/Feed constraints in 32 ms returned sat
[2026-05-25 10:10:49] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 73 ms.
[2026-05-25 10:10:49] [INFO ] Added : 7 causal constraints over 4 iterations in 260 ms. Result :sat
Minimization took 343 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:49] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:50] [INFO ] [Real]Absence check using state equation in 146 ms returned sat
[2026-05-25 10:10:50] [INFO ] [Real]Added 95 Read/Feed constraints in 50 ms returned sat
[2026-05-25 10:10:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:50] [INFO ] [Nat]Absence check using state equation in 161 ms returned sat
[2026-05-25 10:10:50] [INFO ] [Nat]Added 95 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:10:50] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 78 ms.
[2026-05-25 10:10:50] [INFO ] Added : 5 causal constraints over 2 iterations in 220 ms. Result :sat
Minimization took 326 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:51] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:51] [INFO ] [Real]Absence check using state equation in 161 ms returned sat
[2026-05-25 10:10:51] [INFO ] [Real]Added 95 Read/Feed constraints in 46 ms returned sat
[2026-05-25 10:10:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 6 ms returned sat
[2026-05-25 10:10:51] [INFO ] [Nat]Absence check using state equation in 156 ms returned sat
[2026-05-25 10:10:51] [INFO ] [Nat]Added 95 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:10:51] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 76 ms.
[2026-05-25 10:10:51] [INFO ] Added : 1 causal constraints over 1 iterations in 163 ms. Result :sat
Minimization took 282 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:52] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:52] [INFO ] [Real]Absence check using state equation in 147 ms returned sat
[2026-05-25 10:10:52] [INFO ] [Real]Added 95 Read/Feed constraints in 45 ms returned sat
[2026-05-25 10:10:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:10:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:10:52] [INFO ] [Nat]Absence check using state equation in 149 ms returned sat
[2026-05-25 10:10:52] [INFO ] [Nat]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:10:52] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:10:52] [INFO ] Added : 12 causal constraints over 4 iterations in 265 ms. Result :sat
Minimization took 302 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 443] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 443] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 466 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 59 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 60 ms. Remains : 466/466 places, 1317/1317 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 74 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
[2026-05-25 10:11:33] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:11:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:33] [INFO ] Implicit Places using invariants in 349 ms returned []
[2026-05-25 10:11:33] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:11:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:11:33] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:11:35] [INFO ] Implicit Places using invariants and state equation in 2229 ms returned []
Implicit Place search using SMT with State Equation took 2579 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:11:35] [INFO ] Redundant transitions in 26 ms returned []
Running 1315 sub problems to find dead transitions.
[2026-05-25 10:11:35] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:11:35] [INFO ] Invariant cache hit.
[2026-05-25 10:11:35] [INFO ] State equation strengthened by 95 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:11:47] [INFO ] Deduced a trap composed of 131 places in 150 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 466/1228 variables, and 4 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 30036 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/466 constraints, ReadFeed: 0/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/466 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 3 (OVERLAPS) 762/1228 variables, 466/470 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1228 variables, 95/565 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1228/1228 variables, and 1880 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 30892 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 466/466 constraints, ReadFeed: 95/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62691ms problems are : Problem set: 0 solved, 1315 unsolved
Search for dead transitions found 0 dead transitions in 62694ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 65381 ms. Remains : 466/466 places, 1317/1317 transitions.
[2026-05-25 10:12:38] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {255=1, 263=1, 270=1, 385=1, 590=1, 748=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 382=1, 715=1, 756=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 52 ms. (steps per millisecond=192 ) properties (out of 8) seen :[0, 0, 0, 0, 0, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 443] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:12:38] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:12:38] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, 466, 5, 1325, 6961, 1554, 443] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 3051 ms. (327 steps per ms)
BEST_FIRST walk for 8000008 steps (16 resets) in 5136 ms. (1557 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 2, 980, 5, 1325, 6961, 1554, 496] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:12:47] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:12:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:47] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:47] [INFO ] [Real]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:12:47] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:12:47] [INFO ] [Real]Added 95 Read/Feed constraints in 32 ms returned sat
[2026-05-25 10:12:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:47] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:47] [INFO ] [Nat]Absence check using state equation in 156 ms returned sat
[2026-05-25 10:12:47] [INFO ] [Nat]Added 95 Read/Feed constraints in 35 ms returned sat
[2026-05-25 10:12:47] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:12:47] [INFO ] Added : 1 causal constraints over 1 iterations in 164 ms. Result :sat
Minimization took 280 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:48] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:48] [INFO ] [Real]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:12:48] [INFO ] [Real]Added 95 Read/Feed constraints in 37 ms returned sat
[2026-05-25 10:12:48] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:48] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:48] [INFO ] [Nat]Absence check using state equation in 137 ms returned sat
[2026-05-25 10:12:48] [INFO ] [Nat]Added 95 Read/Feed constraints in 55 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:49] [INFO ] Deduced a trap composed of 76 places in 262 ms of which 46 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:49] [INFO ] Deduced a trap composed of 131 places in 177 ms of which 8 ms to minimize.
[2026-05-25 10:12:49] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 523 ms
[2026-05-25 10:12:49] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:12:49] [INFO ] Added : 2 causal constraints over 1 iterations in 161 ms. Result :sat
Minimization took 278 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:49] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:12:49] [INFO ] [Real]Absence check using state equation in 138 ms returned sat
[2026-05-25 10:12:49] [INFO ] [Real]Added 95 Read/Feed constraints in 34 ms returned sat
[2026-05-25 10:12:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:50] [INFO ] [Nat]Absence check using state equation in 153 ms returned sat
[2026-05-25 10:12:50] [INFO ] [Nat]Added 95 Read/Feed constraints in 28 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:50] [INFO ] Deduced a trap composed of 76 places in 240 ms of which 39 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:12:50] [INFO ] Deduced a trap composed of 82 places in 241 ms of which 40 ms to minimize.
[2026-05-25 10:12:50] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 547 ms
[2026-05-25 10:12:50] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:12:51] [INFO ] Added : 4 causal constraints over 2 iterations in 222 ms. Result :sat
Minimization took 390 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:51] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:12:51] [INFO ] [Real]Absence check using state equation in 147 ms returned sat
[2026-05-25 10:12:51] [INFO ] [Real]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:12:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 13 ms returned sat
[2026-05-25 10:12:51] [INFO ] [Nat]Absence check using state equation in 151 ms returned sat
[2026-05-25 10:12:51] [INFO ] [Nat]Added 95 Read/Feed constraints in 25 ms returned sat
[2026-05-25 10:12:52] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 74 ms.
[2026-05-25 10:12:52] [INFO ] Added : 13 causal constraints over 4 iterations in 264 ms. Result :sat
Minimization took 296 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:52] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:52] [INFO ] [Real]Absence check using state equation in 137 ms returned sat
[2026-05-25 10:12:52] [INFO ] [Real]Added 95 Read/Feed constraints in 36 ms returned sat
[2026-05-25 10:12:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:53] [INFO ] [Nat]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:12:53] [INFO ] [Nat]Added 95 Read/Feed constraints in 20 ms returned sat
[2026-05-25 10:12:53] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 73 ms.
[2026-05-25 10:12:53] [INFO ] Added : 7 causal constraints over 4 iterations in 260 ms. Result :sat
Minimization took 316 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:53] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:12:53] [INFO ] [Real]Absence check using state equation in 148 ms returned sat
[2026-05-25 10:12:54] [INFO ] [Real]Added 95 Read/Feed constraints in 46 ms returned sat
[2026-05-25 10:12:54] [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 10:12:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:54] [INFO ] [Nat]Absence check using state equation in 157 ms returned sat
[2026-05-25 10:12:54] [INFO ] [Nat]Added 95 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:12:54] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 76 ms.
[2026-05-25 10:12:54] [INFO ] Added : 5 causal constraints over 2 iterations in 218 ms. Result :sat
Minimization took 315 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:54] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:12:55] [INFO ] [Real]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:12:55] [INFO ] [Real]Added 95 Read/Feed constraints in 41 ms returned sat
[2026-05-25 10:12:55] [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 10:12:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:55] [INFO ] [Nat]Absence check using state equation in 136 ms returned sat
[2026-05-25 10:12:55] [INFO ] [Nat]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:12:55] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:12:55] [INFO ] Added : 1 causal constraints over 1 iterations in 159 ms. Result :sat
Minimization took 247 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:55] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:12:56] [INFO ] [Real]Absence check using state equation in 144 ms returned sat
[2026-05-25 10:12:56] [INFO ] [Real]Added 95 Read/Feed constraints in 46 ms returned sat
[2026-05-25 10:12:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:12:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:12:56] [INFO ] [Nat]Absence check using state equation in 148 ms returned sat
[2026-05-25 10:12:56] [INFO ] [Nat]Added 95 Read/Feed constraints in 31 ms returned sat
[2026-05-25 10:12:56] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:12:56] [INFO ] Added : 12 causal constraints over 4 iterations in 248 ms. Result :sat
Minimization took 298 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 2, 980, 5, 1325, 6961, 1554, 496] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 980, 6, 1325, 6961, 1554, 496] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 466 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 58 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 58 ms. Remains : 466/466 places, 1317/1317 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Applied a total of 0 rules in 60 ms. Remains 466 /466 variables (removed 0) and now considering 1317/1317 (removed 0) transitions.
[2026-05-25 10:13:39] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:13:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:39] [INFO ] Implicit Places using invariants in 316 ms returned []
[2026-05-25 10:13:39] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:13:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:13:40] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:13:41] [INFO ] Implicit Places using invariants and state equation in 2075 ms returned []
Implicit Place search using SMT with State Equation took 2392 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:13:42] [INFO ] Redundant transitions in 24 ms returned []
Running 1315 sub problems to find dead transitions.
[2026-05-25 10:13:42] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:13:42] [INFO ] Invariant cache hit.
[2026-05-25 10:13:42] [INFO ] State equation strengthened by 95 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:13:53] [INFO ] Deduced a trap composed of 131 places in 161 ms of which 8 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 466/1228 variables, and 4 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 30023 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/466 constraints, ReadFeed: 0/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1315 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/466 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/466 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/466 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 3 (OVERLAPS) 762/1228 variables, 466/470 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1228 variables, 95/565 constraints. Problems are: Problem set: 0 solved, 1315 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1228/1228 variables, and 1880 constraints, problems are : Problem set: 0 solved, 1315 unsolved in 31049 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 466/466 constraints, ReadFeed: 95/95 constraints, PredecessorRefiner: 1315/1315 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62946ms problems are : Problem set: 0 solved, 1315 unsolved
Search for dead transitions found 0 dead transitions in 62949ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 65443 ms. Remains : 466/466 places, 1317/1317 transitions.
[2026-05-25 10:14:44] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {255=1, 263=1, 270=1, 385=1, 590=1, 748=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {252=1, 382=1, 715=1, 756=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 51 ms. (steps per millisecond=196 ) properties (out of 8) seen :[0, 0, 3, 0, 3, 0, 3, 2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, 980, 6, 1325, 6961, 1554, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:14:45] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:14:45] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, 980, 6, 1325, 6961, 1554, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2917 ms. (342 steps per ms)
FORMULA FunctionPointer-PT-c002-UpperBounds-15 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 7000007 steps (14 resets) in 4572 ms. (1530 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 2, 980, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:14:52] [INFO ] Flow matrix only has 762 transitions (discarded 555 similar events)
[2026-05-25 10:14:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:52] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using state equation in 145 ms returned sat
[2026-05-25 10:14:53] [INFO ] State equation strengthened by 95 read => feed constraints.
[2026-05-25 10:14:53] [INFO ] [Real]Added 95 Read/Feed constraints in 31 ms returned sat
[2026-05-25 10:14:53] [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 10:14:53] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:14:53] [INFO ] [Nat]Added 95 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:14:53] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 71 ms.
[2026-05-25 10:14:53] [INFO ] Added : 1 causal constraints over 1 iterations in 153 ms. Result :sat
Minimization took 258 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:53] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Absence check using state equation in 156 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Real]Added 95 Read/Feed constraints in 41 ms returned sat
[2026-05-25 10:14:54] [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 10:14:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Absence check using state equation in 158 ms returned sat
[2026-05-25 10:14:54] [INFO ] [Nat]Added 95 Read/Feed constraints in 60 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:54] [INFO ] Deduced a trap composed of 76 places in 259 ms of which 45 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:54] [INFO ] Deduced a trap composed of 131 places in 173 ms of which 8 ms to minimize.
[2026-05-25 10:14:54] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 539 ms
[2026-05-25 10:14:54] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 76 ms.
[2026-05-25 10:14:55] [INFO ] Added : 2 causal constraints over 1 iterations in 161 ms. Result :sat
Minimization took 336 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:55] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:55] [INFO ] [Real]Absence check using state equation in 139 ms returned sat
[2026-05-25 10:14:55] [INFO ] [Real]Added 95 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:14:55] [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 10:14:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:55] [INFO ] [Nat]Absence check using state equation in 135 ms returned sat
[2026-05-25 10:14:55] [INFO ] [Nat]Added 95 Read/Feed constraints in 27 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:56] [INFO ] Deduced a trap composed of 76 places in 243 ms of which 39 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:14:56] [INFO ] Deduced a trap composed of 82 places in 258 ms of which 40 ms to minimize.
[2026-05-25 10:14:56] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 587 ms
[2026-05-25 10:14:56] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 77 ms.
[2026-05-25 10:14:56] [INFO ] Added : 4 causal constraints over 2 iterations in 225 ms. Result :sat
Minimization took 445 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:57] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:57] [INFO ] [Real]Absence check using state equation in 137 ms returned sat
[2026-05-25 10:14:57] [INFO ] [Real]Added 95 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:14:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:14:57] [INFO ] [Nat]Absence check using state equation in 136 ms returned sat
[2026-05-25 10:14:57] [INFO ] [Nat]Added 95 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:14:57] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 72 ms.
[2026-05-25 10:14:58] [INFO ] Added : 13 causal constraints over 4 iterations in 254 ms. Result :sat
Minimization took 278 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:58] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:58] [INFO ] [Real]Absence check using state equation in 157 ms returned sat
[2026-05-25 10:14:58] [INFO ] [Real]Added 95 Read/Feed constraints in 34 ms returned sat
[2026-05-25 10:14:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:58] [INFO ] [Nat]Absence check using state equation in 144 ms returned sat
[2026-05-25 10:14:58] [INFO ] [Nat]Added 95 Read/Feed constraints in 22 ms returned sat
[2026-05-25 10:14:58] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 73 ms.
[2026-05-25 10:14:59] [INFO ] Added : 7 causal constraints over 4 iterations in 259 ms. Result :sat
Minimization took 321 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:59] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:14:59] [INFO ] [Real]Absence check using state equation in 144 ms returned sat
[2026-05-25 10:14:59] [INFO ] [Real]Added 95 Read/Feed constraints in 48 ms returned sat
[2026-05-25 10:14:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:14:59] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:14:59] [INFO ] [Nat]Absence check using state equation in 146 ms returned sat
[2026-05-25 10:15:00] [INFO ] [Nat]Added 95 Read/Feed constraints in 25 ms returned sat
[2026-05-25 10:15:00] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 73 ms.
[2026-05-25 10:15:00] [INFO ] Added : 5 causal constraints over 2 iterations in 207 ms. Result :sat
Minimization took 292 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:00] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:00] [INFO ] [Real]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:15:00] [INFO ] [Real]Added 95 Read/Feed constraints in 43 ms returned sat
[2026-05-25 10:15:00] [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 10:15:00] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:15:01] [INFO ] [Nat]Absence check using state equation in 141 ms returned sat
[2026-05-25 10:15:01] [INFO ] [Nat]Added 95 Read/Feed constraints in 28 ms returned sat
[2026-05-25 10:15:01] [INFO ] Computed and/alt/rep : 103/221/97 causal constraints (skipped 663 transitions) in 78 ms.
[2026-05-25 10:15:01] [INFO ] Added : 1 causal constraints over 1 iterations in 181 ms. Result :sat
Minimization took 247 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 2, 980, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 980, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 7 out of 466 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 466/466 places, 1317/1317 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 465 transition count 1315
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 465 transition count 1315
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 3 place count 464 transition count 1313
Iterating global reduction 0 with 1 rules applied. Total rules applied 4 place count 464 transition count 1313
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 463 transition count 1309
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 463 transition count 1309
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 462 transition count 1307
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 462 transition count 1307
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 461 transition count 1305
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 461 transition count 1305
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 11 place count 460 transition count 1303
Iterating global reduction 0 with 1 rules applied. Total rules applied 12 place count 460 transition count 1303
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 13 place count 459 transition count 1301
Iterating global reduction 0 with 1 rules applied. Total rules applied 14 place count 459 transition count 1301
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 15 place count 458 transition count 1299
Iterating global reduction 0 with 1 rules applied. Total rules applied 16 place count 458 transition count 1299
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 17 place count 457 transition count 1297
Iterating global reduction 0 with 1 rules applied. Total rules applied 18 place count 457 transition count 1297
Applied a total of 18 rules in 165 ms. Remains 457 /466 variables (removed 9) and now considering 1297/1317 (removed 20) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 165 ms. Remains : 457/466 places, 1297/1317 transitions.
[2026-05-25 10:15:42] [INFO ] Flow matrix only has 748 transitions (discarded 549 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {200=1, 322=1, 654=1, 745=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {252=1, 374=1, 578=1, 732=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 50 ms. (steps per millisecond=200 ) properties (out of 7) seen :[0, 0, 2147483647, 0, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, +inf, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:15:42] [INFO ] Flow matrix only has 748 transitions (discarded 549 similar events)
// Phase 1: matrix 748 rows 457 cols
[2026-05-25 10:15:42] [INFO ] Computed 3 invariants in 9 ms
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, +inf, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2817 ms. (354 steps per ms)
FORMULA FunctionPointer-PT-c002-UpperBounds-04 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 6000006 steps (12 resets) in 3828 ms. (1566 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 2, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:15:49] [INFO ] Flow matrix only has 748 transitions (discarded 549 similar events)
[2026-05-25 10:15:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:49] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:49] [INFO ] [Real]Absence check using state equation in 138 ms returned sat
[2026-05-25 10:15:49] [INFO ] State equation strengthened by 92 read => feed constraints.
[2026-05-25 10:15:49] [INFO ] [Real]Added 92 Read/Feed constraints in 23 ms returned sat
[2026-05-25 10:15:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:49] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:15:49] [INFO ] [Nat]Absence check using state equation in 134 ms returned sat
[2026-05-25 10:15:49] [INFO ] [Nat]Added 92 Read/Feed constraints in 32 ms returned sat
[2026-05-25 10:15:49] [INFO ] Computed and/alt/rep : 99/189/93 causal constraints (skipped 653 transitions) in 71 ms.
[2026-05-25 10:15:49] [INFO ] Added : 1 causal constraints over 1 iterations in 163 ms. Result :sat
Minimization took 270 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:50] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:50] [INFO ] [Real]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:15:50] [INFO ] [Real]Added 92 Read/Feed constraints in 31 ms returned sat
[2026-05-25 10:15:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:50] [INFO ] [Nat]Absence check using state equation in 135 ms returned sat
[2026-05-25 10:15:50] [INFO ] [Nat]Added 92 Read/Feed constraints in 56 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:50] [INFO ] Deduced a trap composed of 75 places in 224 ms of which 35 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:50] [INFO ] Deduced a trap composed of 131 places in 175 ms of which 7 ms to minimize.
[2026-05-25 10:15:51] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 481 ms
[2026-05-25 10:15:51] [INFO ] Computed and/alt/rep : 99/189/93 causal constraints (skipped 653 transitions) in 68 ms.
[2026-05-25 10:15:51] [INFO ] Added : 2 causal constraints over 1 iterations in 158 ms. Result :sat
Minimization took 265 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:51] [INFO ] [Real]Absence check using 3 positive place invariants in 8 ms returned sat
[2026-05-25 10:15:51] [INFO ] [Real]Absence check using state equation in 138 ms returned sat
[2026-05-25 10:15:51] [INFO ] [Real]Added 92 Read/Feed constraints in 30 ms returned sat
[2026-05-25 10:15:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:51] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:51] [INFO ] [Nat]Absence check using state equation in 134 ms returned sat
[2026-05-25 10:15:51] [INFO ] [Nat]Added 92 Read/Feed constraints in 36 ms returned sat
[2026-05-25 10:15:52] [INFO ] Computed and/alt/rep : 99/189/93 causal constraints (skipped 653 transitions) in 70 ms.
[2026-05-25 10:15:52] [INFO ] Added : 6 causal constraints over 3 iterations in 239 ms. Result :sat
Minimization took 253 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:52] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:52] [INFO ] [Real]Absence check using state equation in 152 ms returned sat
[2026-05-25 10:15:52] [INFO ] [Real]Added 92 Read/Feed constraints in 40 ms returned sat
[2026-05-25 10:15:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:15:52] [INFO ] [Nat]Absence check using state equation in 136 ms returned sat
[2026-05-25 10:15:53] [INFO ] [Nat]Added 92 Read/Feed constraints in 51 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:15:53] [INFO ] Deduced a trap composed of 75 places in 239 ms of which 28 ms to minimize.
[2026-05-25 10:15:53] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 292 ms
[2026-05-25 10:15:53] [INFO ] Computed and/alt/rep : 99/189/93 causal constraints (skipped 653 transitions) in 75 ms.
[2026-05-25 10:15:53] [INFO ] Added : 13 causal constraints over 4 iterations in 291 ms. Result :sat
Minimization took 265 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:53] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:15:54] [INFO ] [Real]Absence check using state equation in 145 ms returned sat
[2026-05-25 10:15:54] [INFO ] [Real]Added 92 Read/Feed constraints in 36 ms returned sat
[2026-05-25 10:15:54] [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 10:15:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:15:54] [INFO ] [Nat]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:15:54] [INFO ] [Nat]Added 92 Read/Feed constraints in 35 ms returned sat
[2026-05-25 10:15:54] [INFO ] Computed and/alt/rep : 99/189/93 causal constraints (skipped 653 transitions) in 74 ms.
[2026-05-25 10:15:54] [INFO ] Added : 11 causal constraints over 4 iterations in 273 ms. Result :sat
Minimization took 262 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:15:55] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:55] [INFO ] [Real]Absence check using state equation in 142 ms returned sat
[2026-05-25 10:15:55] [INFO ] [Real]Added 92 Read/Feed constraints in 54 ms returned sat
[2026-05-25 10:15:55] [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 10:15:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:15:55] [INFO ] [Nat]Absence check using state equation in 147 ms returned sat
[2026-05-25 10:15:55] [INFO ] [Nat]Added 92 Read/Feed constraints in 41 ms returned sat
[2026-05-25 10:15:55] [INFO ] Computed and/alt/rep : 99/189/93 causal constraints (skipped 653 transitions) in 71 ms.
[2026-05-25 10:15:55] [INFO ] Added : 1 causal constraints over 1 iterations in 168 ms. Result :sat
Minimization took 259 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 2, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 6, 1325, 6961, 1554] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf]
Support contains 6 out of 457 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 457/457 places, 1297/1297 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 456 transition count 1295
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 456 transition count 1295
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 3 place count 455 transition count 1293
Iterating global reduction 0 with 1 rules applied. Total rules applied 4 place count 455 transition count 1293
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 454 transition count 1291
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 454 transition count 1291
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 453 transition count 1289
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 453 transition count 1289
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 452 transition count 1287
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 452 transition count 1287
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 11 place count 451 transition count 1285
Iterating global reduction 0 with 1 rules applied. Total rules applied 12 place count 451 transition count 1285
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 13 place count 450 transition count 1281
Iterating global reduction 0 with 1 rules applied. Total rules applied 14 place count 450 transition count 1281
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 15 place count 449 transition count 1279
Iterating global reduction 0 with 1 rules applied. Total rules applied 16 place count 449 transition count 1279
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 17 place count 448 transition count 1277
Iterating global reduction 0 with 1 rules applied. Total rules applied 18 place count 448 transition count 1277
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 19 place count 447 transition count 1275
Iterating global reduction 0 with 1 rules applied. Total rules applied 20 place count 447 transition count 1275
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 21 place count 446 transition count 1273
Iterating global reduction 0 with 1 rules applied. Total rules applied 22 place count 446 transition count 1273
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 23 place count 445 transition count 1271
Iterating global reduction 0 with 1 rules applied. Total rules applied 24 place count 445 transition count 1271
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 25 place count 444 transition count 1269
Iterating global reduction 0 with 1 rules applied. Total rules applied 26 place count 444 transition count 1269
Applied a total of 26 rules in 192 ms. Remains 444 /457 variables (removed 13) and now considering 1269/1297 (removed 28) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 192 ms. Remains : 444/457 places, 1269/1297 transitions.
[2026-05-25 10:15:56] [INFO ] Flow matrix only has 729 transitions (discarded 540 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {222=1, 332=1, 534=1, 719=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 362=1, 564=1, 716=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 56 ms. (steps per millisecond=178 ) properties (out of 6) seen :[0, 0, 0, 0, 0, 2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, 6, 1325, 6961, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:15:56] [INFO ] Flow matrix only has 729 transitions (discarded 540 similar events)
// Phase 1: matrix 729 rows 444 cols
[2026-05-25 10:15:56] [INFO ] Computed 3 invariants in 9 ms
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, 6, 1325, 6961, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2792 ms. (358 steps per ms)
FORMULA FunctionPointer-PT-c002-UpperBounds-13 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 5000003 steps (10 resets) in 3143 ms. (1590 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12, 2, 6, 1325, 6961] Max Struct:[+inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:16:02] [INFO ] Flow matrix only has 729 transitions (discarded 540 similar events)
[2026-05-25 10:16:02] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:02] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:02] [INFO ] [Real]Absence check using state equation in 131 ms returned sat
[2026-05-25 10:16:02] [INFO ] State equation strengthened by 88 read => feed constraints.
[2026-05-25 10:16:02] [INFO ] [Real]Added 88 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:16:02] [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 10:16:02] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:02] [INFO ] [Nat]Absence check using state equation in 127 ms returned sat
[2026-05-25 10:16:02] [INFO ] [Nat]Added 88 Read/Feed constraints in 21 ms returned sat
[2026-05-25 10:16:03] [INFO ] Computed and/alt/rep : 216/1304/216 causal constraints (skipped 511 transitions) in 68 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:03] [INFO ] Deduced a trap composed of 74 places in 245 ms of which 46 ms to minimize.
[2026-05-25 10:16:03] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 317 ms
[2026-05-25 10:16:03] [INFO ] Added : 15 causal constraints over 5 iterations in 689 ms. Result :sat
Minimization took 299 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:04] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:04] [INFO ] [Real]Absence check using state equation in 142 ms returned sat
[2026-05-25 10:16:04] [INFO ] [Real]Added 88 Read/Feed constraints in 30 ms returned sat
[2026-05-25 10:16:04] [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 10:16:04] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:04] [INFO ] [Nat]Absence check using state equation in 129 ms returned sat
[2026-05-25 10:16:04] [INFO ] [Nat]Added 88 Read/Feed constraints in 44 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:04] [INFO ] Deduced a trap composed of 74 places in 226 ms of which 34 ms to minimize.
[2026-05-25 10:16:04] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 297 ms
[2026-05-25 10:16:04] [INFO ] Computed and/alt/rep : 216/1304/216 causal constraints (skipped 511 transitions) in 69 ms.
[2026-05-25 10:16:04] [INFO ] Added : 3 causal constraints over 1 iterations in 156 ms. Result :sat
Minimization took 298 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:05] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:05] [INFO ] [Real]Absence check using state equation in 132 ms returned sat
[2026-05-25 10:16:05] [INFO ] [Real]Added 88 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:16:05] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:05] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:05] [INFO ] [Nat]Absence check using state equation in 133 ms returned sat
[2026-05-25 10:16:05] [INFO ] [Nat]Added 88 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:16:05] [INFO ] Computed and/alt/rep : 216/1304/216 causal constraints (skipped 511 transitions) in 70 ms.
[2026-05-25 10:16:06] [INFO ] Added : 14 causal constraints over 4 iterations in 295 ms. Result :sat
Minimization took 316 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:06] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:06] [INFO ] [Real]Absence check using state equation in 135 ms returned sat
[2026-05-25 10:16:06] [INFO ] [Real]Added 88 Read/Feed constraints in 46 ms returned sat
[2026-05-25 10:16:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:06] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:06] [INFO ] [Nat]Absence check using state equation in 133 ms returned sat
[2026-05-25 10:16:06] [INFO ] [Nat]Added 88 Read/Feed constraints in 23 ms returned sat
[2026-05-25 10:16:07] [INFO ] Computed and/alt/rep : 216/1304/216 causal constraints (skipped 511 transitions) in 68 ms.
[2026-05-25 10:16:07] [INFO ] Added : 12 causal constraints over 3 iterations in 296 ms. Result :sat
Minimization took 276 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:07] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:07] [INFO ] [Real]Absence check using state equation in 146 ms returned sat
[2026-05-25 10:16:07] [INFO ] [Real]Added 88 Read/Feed constraints in 39 ms returned sat
[2026-05-25 10:16:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:07] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:08] [INFO ] [Nat]Absence check using state equation in 144 ms returned sat
[2026-05-25 10:16:08] [INFO ] [Nat]Added 88 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:16:08] [INFO ] Computed and/alt/rep : 216/1304/216 causal constraints (skipped 511 transitions) in 68 ms.
[2026-05-25 10:16:08] [INFO ] Added : 13 causal constraints over 3 iterations in 286 ms. Result :sat
Minimization took 272 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12, 2, 6, 1325, 6961] Max Struct:[+inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12, 2, 6, 1325, 6961] Max Struct:[+inf, +inf, +inf, +inf, +inf]
Support contains 5 out of 444 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 444/444 places, 1269/1269 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 443 transition count 1267
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 443 transition count 1267
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 4 place count 443 transition count 1265
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 5 place count 442 transition count 1263
Iterating global reduction 1 with 1 rules applied. Total rules applied 6 place count 442 transition count 1263
Applied a total of 6 rules in 80 ms. Remains 442 /444 variables (removed 2) and now considering 1263/1269 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 80 ms. Remains : 442/444 places, 1263/1269 transitions.
[2026-05-25 10:16:08] [INFO ] Flow matrix only has 724 transitions (discarded 539 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {256=1, 363=1, 693=1, 719=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 359=1, 689=1, 723=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 45 ms. (steps per millisecond=222 ) properties (out of 5) seen :[0, 0, 0, 0, 2147483647]
Current structural bounds on expressions (after cover walk) : Max Seen:[12, 2, 6, 1325, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf]
[2026-05-25 10:16:09] [INFO ] Flow matrix only has 724 transitions (discarded 539 similar events)
// Phase 1: matrix 724 rows 442 cols
[2026-05-25 10:16:09] [INFO ] Computed 3 invariants in 8 ms
Current structural bounds on expressions (after invariants) : Max Seen:[12, 2, 6, 1325, +inf] Max Struct:[+inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2684 ms. (372 steps per ms)
FORMULA FunctionPointer-PT-c002-UpperBounds-12 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 4000003 steps (8 resets) in 2518 ms. (1587 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1735, 2, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-25 10:16:14] [INFO ] Flow matrix only has 724 transitions (discarded 539 similar events)
[2026-05-25 10:16:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:14] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:16:14] [INFO ] [Real]Absence check using state equation in 149 ms returned sat
[2026-05-25 10:16:14] [INFO ] State equation strengthened by 86 read => feed constraints.
[2026-05-25 10:16:14] [INFO ] [Real]Added 86 Read/Feed constraints in 32 ms returned sat
[2026-05-25 10:16:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:16:14] [INFO ] [Nat]Absence check using state equation in 149 ms returned sat
[2026-05-25 10:16:14] [INFO ] [Nat]Added 86 Read/Feed constraints in 41 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:15] [INFO ] Deduced a trap composed of 73 places in 233 ms of which 35 ms to minimize.
[2026-05-25 10:16:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 281 ms
[2026-05-25 10:16:15] [INFO ] Computed and/alt/rep : 343/2326/343 causal constraints (skipped 379 transitions) in 68 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:15] [INFO ] Deduced a trap composed of 73 places in 241 ms of which 42 ms to minimize.
[2026-05-25 10:16:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 303 ms
[2026-05-25 10:16:15] [INFO ] Added : 6 causal constraints over 3 iterations in 554 ms. Result :sat
Minimization took 336 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:16] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:16] [INFO ] [Real]Absence check using state equation in 131 ms returned sat
[2026-05-25 10:16:16] [INFO ] [Real]Added 86 Read/Feed constraints in 28 ms returned sat
[2026-05-25 10:16:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:16:16] [INFO ] [Nat]Absence check using state equation in 148 ms returned sat
[2026-05-25 10:16:16] [INFO ] [Nat]Added 86 Read/Feed constraints in 66 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:16] [INFO ] Deduced a trap composed of 73 places in 233 ms of which 33 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:17] [INFO ] Deduced a trap composed of 131 places in 169 ms of which 8 ms to minimize.
[2026-05-25 10:16:17] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 490 ms
[2026-05-25 10:16:17] [INFO ] Computed and/alt/rep : 343/2326/343 causal constraints (skipped 379 transitions) in 72 ms.
[2026-05-25 10:16:17] [INFO ] Added : 7 causal constraints over 2 iterations in 194 ms. Result :sat
Minimization took 312 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:17] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:17] [INFO ] [Real]Absence check using state equation in 139 ms returned sat
[2026-05-25 10:16:17] [INFO ] [Real]Added 86 Read/Feed constraints in 25 ms returned sat
[2026-05-25 10:16:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:18] [INFO ] [Nat]Absence check using state equation in 136 ms returned sat
[2026-05-25 10:16:18] [INFO ] [Nat]Added 86 Read/Feed constraints in 20 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:18] [INFO ] Deduced a trap composed of 73 places in 231 ms of which 35 ms to minimize.
[2026-05-25 10:16:18] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 284 ms
[2026-05-25 10:16:18] [INFO ] Computed and/alt/rep : 343/2326/343 causal constraints (skipped 379 transitions) in 68 ms.
[2026-05-25 10:16:18] [INFO ] Added : 15 causal constraints over 4 iterations in 284 ms. Result :sat
Minimization took 283 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:19] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:16:19] [INFO ] [Real]Absence check using state equation in 148 ms returned sat
[2026-05-25 10:16:19] [INFO ] [Real]Added 86 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:16:19] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:19] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:16:19] [INFO ] [Nat]Absence check using state equation in 131 ms returned sat
[2026-05-25 10:16:19] [INFO ] [Nat]Added 86 Read/Feed constraints in 21 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:19] [INFO ] Deduced a trap composed of 73 places in 257 ms of which 36 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:20] [INFO ] Deduced a trap composed of 73 places in 241 ms of which 41 ms to minimize.
[2026-05-25 10:16:20] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 578 ms
[2026-05-25 10:16:20] [INFO ] Computed and/alt/rep : 343/2326/343 causal constraints (skipped 379 transitions) in 74 ms.
[2026-05-25 10:16:20] [INFO ] Added : 14 causal constraints over 3 iterations in 731 ms. Result :sat
Minimization took 351 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1735, 2, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1735, 2, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
Support contains 4 out of 442 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 442/442 places, 1263/1263 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 441 transition count 1259
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 441 transition count 1259
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 3 place count 440 transition count 1257
Iterating global reduction 0 with 1 rules applied. Total rules applied 4 place count 440 transition count 1257
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 439 transition count 1255
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 439 transition count 1255
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 438 transition count 1253
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 438 transition count 1253
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 437 transition count 1251
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 437 transition count 1251
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 11 place count 436 transition count 1249
Iterating global reduction 0 with 1 rules applied. Total rules applied 12 place count 436 transition count 1249
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 13 place count 435 transition count 1247
Iterating global reduction 0 with 1 rules applied. Total rules applied 14 place count 435 transition count 1247
Applied a total of 14 rules in 127 ms. Remains 435 /442 variables (removed 7) and now considering 1247/1263 (removed 16) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 127 ms. Remains : 435/442 places, 1247/1263 transitions.
[2026-05-25 10:16:25] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {213=1, 314=1, 643=1, 707=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {252=1, 353=1, 682=1, 710=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 4) seen :[3, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[1735, 2, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-25 10:16:26] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
// Phase 1: matrix 712 rows 435 cols
[2026-05-25 10:16:26] [INFO ] Computed 3 invariants in 9 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1735, 2, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2731 ms. (366 steps per ms)
BEST_FIRST walk for 4000003 steps (8 resets) in 2655 ms. (1506 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1735, 2, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-25 10:16:31] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:16:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:31] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:31] [INFO ] [Real]Absence check using state equation in 149 ms returned sat
[2026-05-25 10:16:31] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:16:31] [INFO ] [Real]Added 83 Read/Feed constraints in 47 ms returned sat
[2026-05-25 10:16:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:31] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:16:32] [INFO ] [Nat]Absence check using state equation in 147 ms returned sat
[2026-05-25 10:16:32] [INFO ] [Nat]Added 83 Read/Feed constraints in 30 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:32] [INFO ] Deduced a trap composed of 72 places in 258 ms of which 41 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:32] [INFO ] Deduced a trap composed of 72 places in 234 ms of which 40 ms to minimize.
[2026-05-25 10:16:32] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 594 ms
[2026-05-25 10:16:32] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 68 ms.
[2026-05-25 10:16:32] [INFO ] Added : 6 causal constraints over 3 iterations in 305 ms. Result :sat
Minimization took 341 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:33] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:33] [INFO ] [Real]Absence check using state equation in 134 ms returned sat
[2026-05-25 10:16:33] [INFO ] [Real]Added 83 Read/Feed constraints in 33 ms returned sat
[2026-05-25 10:16:33] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:33] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:33] [INFO ] [Nat]Absence check using state equation in 128 ms returned sat
[2026-05-25 10:16:33] [INFO ] [Nat]Added 83 Read/Feed constraints in 46 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:34] [INFO ] Deduced a trap composed of 72 places in 234 ms of which 40 ms to minimize.
[2026-05-25 10:16:34] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 309 ms
[2026-05-25 10:16:34] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 69 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:34] [INFO ] Deduced a trap composed of 72 places in 227 ms of which 40 ms to minimize.
[2026-05-25 10:16:34] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 294 ms
[2026-05-25 10:16:34] [INFO ] Added : 5 causal constraints over 2 iterations in 507 ms. Result :sat
Minimization took 252 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:34] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:35] [INFO ] [Real]Absence check using state equation in 147 ms returned sat
[2026-05-25 10:16:35] [INFO ] [Real]Added 83 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:16:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:35] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:35] [INFO ] [Nat]Absence check using state equation in 128 ms returned sat
[2026-05-25 10:16:35] [INFO ] [Nat]Added 83 Read/Feed constraints in 27 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:35] [INFO ] Deduced a trap composed of 72 places in 252 ms of which 42 ms to minimize.
[2026-05-25 10:16:35] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 310 ms
[2026-05-25 10:16:35] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 67 ms.
[2026-05-25 10:16:36] [INFO ] Added : 20 causal constraints over 5 iterations in 318 ms. Result :sat
Minimization took 263 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:36] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:36] [INFO ] [Real]Absence check using state equation in 134 ms returned sat
[2026-05-25 10:16:36] [INFO ] [Real]Added 83 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:16:36] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:16:36] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:16:36] [INFO ] [Nat]Absence check using state equation in 129 ms returned sat
[2026-05-25 10:16:36] [INFO ] [Nat]Added 83 Read/Feed constraints in 21 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:37] [INFO ] Deduced a trap composed of 72 places in 251 ms of which 41 ms to minimize.
[2026-05-25 10:16:37] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 327 ms
[2026-05-25 10:16:37] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 69 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:37] [INFO ] Deduced a trap composed of 131 places in 179 ms of which 7 ms to minimize.
[2026-05-25 10:16:37] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 246 ms
[2026-05-25 10:16:37] [INFO ] Added : 21 causal constraints over 5 iterations in 605 ms. Result :sat
Minimization took 254 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1735, 2, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1735, 3, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
Support contains 4 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Applied a total of 0 rules in 54 ms. Remains 435 /435 variables (removed 0) and now considering 1247/1247 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 55 ms. Remains : 435/435 places, 1247/1247 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Applied a total of 0 rules in 54 ms. Remains 435 /435 variables (removed 0) and now considering 1247/1247 (removed 0) transitions.
[2026-05-25 10:16:42] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:16:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:42] [INFO ] Implicit Places using invariants in 293 ms returned []
[2026-05-25 10:16:42] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:16:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:16:42] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:16:44] [INFO ] Implicit Places using invariants and state equation in 1407 ms returned []
Implicit Place search using SMT with State Equation took 1702 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:16:44] [INFO ] Redundant transitions in 27 ms returned []
Running 1245 sub problems to find dead transitions.
[2026-05-25 10:16:44] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:16:44] [INFO ] Invariant cache hit.
[2026-05-25 10:16:44] [INFO ] State equation strengthened by 83 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/435 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:16:54] [INFO ] Deduced a trap composed of 131 places in 141 ms of which 6 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/435 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 435/1147 variables, and 4 constraints, problems are : Problem set: 0 solved, 1245 unsolved in 30025 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/435 constraints, ReadFeed: 0/83 constraints, PredecessorRefiner: 1245/1245 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1245 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/435 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/435 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/435 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 3 (OVERLAPS) 712/1147 variables, 435/439 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1147 variables, 83/522 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1147/1147 variables, and 1767 constraints, problems are : Problem set: 0 solved, 1245 unsolved in 30928 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 435/435 constraints, ReadFeed: 83/83 constraints, PredecessorRefiner: 1245/1245 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62656ms problems are : Problem set: 0 solved, 1245 unsolved
Search for dead transitions found 0 dead transitions in 62658ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 64448 ms. Remains : 435/435 places, 1247/1247 transitions.
[2026-05-25 10:17:46] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {213=1, 314=1, 643=1, 707=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 353=1, 682=1, 710=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 46 ms. (steps per millisecond=217 ) properties (out of 4) seen :[0, 0, 2, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[1735, 3, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-25 10:17:47] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:17:47] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1735, 3, 6, 1325] Max Struct:[+inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2744 ms. (364 steps per ms)
BEST_FIRST walk for 4000004 steps (8 resets) in 2503 ms. (1597 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-25 10:17:52] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:17:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:52] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:17:52] [INFO ] [Real]Absence check using state equation in 129 ms returned sat
[2026-05-25 10:17:52] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:17:52] [INFO ] [Real]Added 83 Read/Feed constraints in 44 ms returned sat
[2026-05-25 10:17:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:52] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:17:52] [INFO ] [Nat]Absence check using state equation in 127 ms returned sat
[2026-05-25 10:17:52] [INFO ] [Nat]Added 83 Read/Feed constraints in 29 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:53] [INFO ] Deduced a trap composed of 72 places in 235 ms of which 40 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:53] [INFO ] Deduced a trap composed of 72 places in 243 ms of which 39 ms to minimize.
[2026-05-25 10:17:53] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 557 ms
[2026-05-25 10:17:53] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 73 ms.
[2026-05-25 10:17:53] [INFO ] Added : 6 causal constraints over 3 iterations in 316 ms. Result :sat
Minimization took 335 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:54] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:17:54] [INFO ] [Real]Absence check using state equation in 128 ms returned sat
[2026-05-25 10:17:54] [INFO ] [Real]Added 83 Read/Feed constraints in 34 ms returned sat
[2026-05-25 10:17:54] [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 10:17:54] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:17:54] [INFO ] [Nat]Absence check using state equation in 127 ms returned sat
[2026-05-25 10:17:54] [INFO ] [Nat]Added 83 Read/Feed constraints in 48 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:54] [INFO ] Deduced a trap composed of 72 places in 222 ms of which 40 ms to minimize.
[2026-05-25 10:17:54] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 288 ms
[2026-05-25 10:17:54] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 68 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:55] [INFO ] Deduced a trap composed of 131 places in 167 ms of which 7 ms to minimize.
[2026-05-25 10:17:55] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 222 ms
[2026-05-25 10:17:55] [INFO ] Added : 6 causal constraints over 2 iterations in 413 ms. Result :sat
Minimization took 264 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:55] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:17:55] [INFO ] [Real]Absence check using state equation in 133 ms returned sat
[2026-05-25 10:17:55] [INFO ] [Real]Added 83 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:17:55] [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 10:17:55] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:17:56] [INFO ] [Nat]Absence check using state equation in 128 ms returned sat
[2026-05-25 10:17:56] [INFO ] [Nat]Added 83 Read/Feed constraints in 26 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:56] [INFO ] Deduced a trap composed of 72 places in 226 ms of which 39 ms to minimize.
[2026-05-25 10:17:56] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 292 ms
[2026-05-25 10:17:56] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 69 ms.
[2026-05-25 10:17:56] [INFO ] Added : 20 causal constraints over 5 iterations in 332 ms. Result :sat
Minimization took 264 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:57] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-25 10:17:57] [INFO ] [Real]Absence check using state equation in 132 ms returned sat
[2026-05-25 10:17:57] [INFO ] [Real]Added 83 Read/Feed constraints in 26 ms returned sat
[2026-05-25 10:17:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:17:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:17:57] [INFO ] [Nat]Absence check using state equation in 140 ms returned sat
[2026-05-25 10:17:57] [INFO ] [Nat]Added 83 Read/Feed constraints in 21 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:57] [INFO ] Deduced a trap composed of 72 places in 217 ms of which 40 ms to minimize.
[2026-05-25 10:17:57] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 280 ms
[2026-05-25 10:17:57] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 71 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:17:58] [INFO ] Deduced a trap composed of 131 places in 151 ms of which 7 ms to minimize.
[2026-05-25 10:17:58] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 216 ms
[2026-05-25 10:17:58] [INFO ] Added : 21 causal constraints over 5 iterations in 567 ms. Result :sat
Minimization took 259 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
Support contains 4 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Applied a total of 0 rules in 56 ms. Remains 435 /435 variables (removed 0) and now considering 1247/1247 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 56 ms. Remains : 435/435 places, 1247/1247 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Applied a total of 0 rules in 52 ms. Remains 435 /435 variables (removed 0) and now considering 1247/1247 (removed 0) transitions.
[2026-05-25 10:18:03] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:18:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:03] [INFO ] Implicit Places using invariants in 302 ms returned []
[2026-05-25 10:18:03] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:18:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:18:03] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:18:04] [INFO ] Implicit Places using invariants and state equation in 1403 ms returned []
Implicit Place search using SMT with State Equation took 1706 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:18:04] [INFO ] Redundant transitions in 23 ms returned []
Running 1245 sub problems to find dead transitions.
[2026-05-25 10:18:04] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:18:04] [INFO ] Invariant cache hit.
[2026-05-25 10:18:04] [INFO ] State equation strengthened by 83 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/435 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:18:15] [INFO ] Deduced a trap composed of 131 places in 146 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/435 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Error getting values : (error "ParserException while parsing response: ((s0 0.0)
(s1 1.0)
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(s3 0.0)
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(s73 timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 435/1147 variables, and 4 constraints, problems are : Problem set: 0 solved, 1245 unsolved in 30022 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/435 constraints, ReadFeed: 0/83 constraints, PredecessorRefiner: 1245/1245 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1245 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/435 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/435 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/435 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 3 (OVERLAPS) 712/1147 variables, 435/439 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1147 variables, 83/522 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1147/1147 variables, and 1767 constraints, problems are : Problem set: 0 solved, 1245 unsolved in 30831 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 435/435 constraints, ReadFeed: 83/83 constraints, PredecessorRefiner: 1245/1245 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62484ms problems are : Problem set: 0 solved, 1245 unsolved
Search for dead transitions found 0 dead transitions in 62486ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 64278 ms. Remains : 435/435 places, 1247/1247 transitions.
[2026-05-25 10:19:07] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {213=1, 314=1, 643=1, 707=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {252=1, 353=1, 682=1, 710=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 4) seen :[0, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-25 10:19:07] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:19:07] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2 resets) in 2694 ms. (371 steps per ms)
BEST_FIRST walk for 4000002 steps (8 resets) in 2489 ms. (1606 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-25 10:19:12] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:19:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:12] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:19:12] [INFO ] [Real]Absence check using state equation in 126 ms returned sat
[2026-05-25 10:19:12] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:19:12] [INFO ] [Real]Added 83 Read/Feed constraints in 43 ms returned sat
[2026-05-25 10:19:13] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:19:13] [INFO ] [Nat]Absence check using state equation in 127 ms returned sat
[2026-05-25 10:19:13] [INFO ] [Nat]Added 83 Read/Feed constraints in 29 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:13] [INFO ] Deduced a trap composed of 72 places in 235 ms of which 40 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:13] [INFO ] Deduced a trap composed of 72 places in 225 ms of which 39 ms to minimize.
[2026-05-25 10:19:13] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 548 ms
[2026-05-25 10:19:13] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 68 ms.
[2026-05-25 10:19:14] [INFO ] Added : 6 causal constraints over 3 iterations in 315 ms. Result :sat
Minimization took 339 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:14] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:19:14] [INFO ] [Real]Absence check using state equation in 126 ms returned sat
[2026-05-25 10:19:14] [INFO ] [Real]Added 83 Read/Feed constraints in 36 ms returned sat
[2026-05-25 10:19:14] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:14] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:19:14] [INFO ] [Nat]Absence check using state equation in 125 ms returned sat
[2026-05-25 10:19:14] [INFO ] [Nat]Added 83 Read/Feed constraints in 48 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:15] [INFO ] Deduced a trap composed of 72 places in 229 ms of which 40 ms to minimize.
[2026-05-25 10:19:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 277 ms
[2026-05-25 10:19:15] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 79 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:15] [INFO ] Deduced a trap composed of 131 places in 161 ms of which 7 ms to minimize.
[2026-05-25 10:19:15] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 218 ms
[2026-05-25 10:19:15] [INFO ] Added : 6 causal constraints over 2 iterations in 436 ms. Result :sat
Minimization took 253 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:16] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:19:16] [INFO ] [Real]Absence check using state equation in 143 ms returned sat
[2026-05-25 10:19:16] [INFO ] [Real]Added 83 Read/Feed constraints in 25 ms returned sat
[2026-05-25 10:19:16] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:16] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:19:16] [INFO ] [Nat]Absence check using state equation in 135 ms returned sat
[2026-05-25 10:19:16] [INFO ] [Nat]Added 83 Read/Feed constraints in 26 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:16] [INFO ] Deduced a trap composed of 72 places in 231 ms of which 40 ms to minimize.
[2026-05-25 10:19:16] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 285 ms
[2026-05-25 10:19:16] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 67 ms.
[2026-05-25 10:19:17] [INFO ] Added : 20 causal constraints over 5 iterations in 323 ms. Result :sat
Minimization took 266 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:17] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:19:17] [INFO ] [Real]Absence check using state equation in 135 ms returned sat
[2026-05-25 10:19:17] [INFO ] [Real]Added 83 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:19:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:19:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:19:17] [INFO ] [Nat]Absence check using state equation in 133 ms returned sat
[2026-05-25 10:19:17] [INFO ] [Nat]Added 83 Read/Feed constraints in 21 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:18] [INFO ] Deduced a trap composed of 72 places in 227 ms of which 39 ms to minimize.
[2026-05-25 10:19:18] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 290 ms
[2026-05-25 10:19:18] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 69 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:18] [INFO ] Deduced a trap composed of 131 places in 156 ms of which 7 ms to minimize.
[2026-05-25 10:19:18] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 217 ms
[2026-05-25 10:19:18] [INFO ] Added : 21 causal constraints over 5 iterations in 580 ms. Result :sat
Minimization took 261 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
Support contains 4 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Applied a total of 0 rules in 53 ms. Remains 435 /435 variables (removed 0) and now considering 1247/1247 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 54 ms. Remains : 435/435 places, 1247/1247 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Applied a total of 0 rules in 53 ms. Remains 435 /435 variables (removed 0) and now considering 1247/1247 (removed 0) transitions.
[2026-05-25 10:19:23] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:19:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:23] [INFO ] Implicit Places using invariants in 301 ms returned []
[2026-05-25 10:19:23] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:19:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:19:23] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:19:25] [INFO ] Implicit Places using invariants and state equation in 1391 ms returned []
Implicit Place search using SMT with State Equation took 1695 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:19:25] [INFO ] Redundant transitions in 24 ms returned []
Running 1245 sub problems to find dead transitions.
[2026-05-25 10:19:25] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:19:25] [INFO ] Invariant cache hit.
[2026-05-25 10:19:25] [INFO ] State equation strengthened by 83 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/435 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:19:35] [INFO ] Deduced a trap composed of 131 places in 152 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/435 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 435/1147 variables, and 4 constraints, problems are : Problem set: 0 solved, 1245 unsolved in 30025 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/435 constraints, ReadFeed: 0/83 constraints, PredecessorRefiner: 1245/1245 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1245 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/435 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/435 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/435 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 3 (OVERLAPS) 712/1147 variables, 435/439 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1147 variables, 83/522 constraints. Problems are: Problem set: 0 solved, 1245 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1147/1147 variables, and 1767 constraints, problems are : Problem set: 0 solved, 1245 unsolved in 30837 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 435/435 constraints, ReadFeed: 83/83 constraints, PredecessorRefiner: 1245/1245 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62529ms problems are : Problem set: 0 solved, 1245 unsolved
Search for dead transitions found 0 dead transitions in 62531ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 64320 ms. Remains : 435/435 places, 1247/1247 transitions.
[2026-05-25 10:20:27] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {213=1, 314=1, 643=1, 707=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 353=1, 682=1, 710=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 4) seen :[0, 0, 0, 0]
Current structural bounds on expressions (after cover walk) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
RANDOM walk for 40000 steps (8 resets) in 874 ms. (45 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40003 steps (8 resets) in 218 ms. (182 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 209 ms. (190 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 190 ms. (209 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 163 ms. (243 steps per ms) remains 4/4 properties
[2026-05-25 10:20:28] [INFO ] Flatten gal took : 246 ms
[2026-05-25 10:20:28] [INFO ] Flatten gal took : 86 ms
[2026-05-25 10:20:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5242591899970322403.gal : 67 ms
[2026-05-25 10:20:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1894164824209518254.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/ReachabilityCardinality5242591899970322403.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1894164824209518254.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/ReachabilityCardinality1894164824209518254.prop.
SDD proceeding with computation,4 properties remain. new max is 4
SDD size :1 after 27
SDD proceeding with computation,4 properties remain. new max is 8
SDD size :27 after 1019
SDD proceeding with computation,4 properties remain. new max is 16
SDD size :1019 after 17392
SDD proceeding with computation,4 properties remain. new max is 32
SDD size :17392 after 34592
SDD proceeding with computation,4 properties remain. new max is 64
SDD size :34592 after 59690
SDD proceeding with computation,4 properties remain. new max is 128
SDD size :59690 after 65859
SDD proceeding with computation,4 properties remain. new max is 256
SDD size :65859 after 76944
Invariant property MIN1 does not hold.
SDD proceeding with computation,3 properties remain. new max is 256
SDD size :76944 after 80652
SDD proceeding with computation,3 properties remain. new max is 512
SDD size :80652 after 82497
SDD proceeding with computation,3 properties remain. new max is 1024
SDD size :82497 after 88547
Interrupted probabilistic random walk after 222158 steps, run timeout after 3001 ms. (steps per millisecond=74 ) properties seen :0 out of 4
Probabilistic random walk after 222158 steps, saw 136240 distinct states, run finished after 3008 ms. (steps per millisecond=73 ) properties seen :0
[2026-05-25 10:20:31] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:20:31] [INFO ] Invariant cache hit.
[2026-05-25 10:20:31] [INFO ] State equation strengthened by 83 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 8/11 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 373/384 variables, 11/14 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/384 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/384 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 9/393 variables, 2/17 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/393 variables, 3/20 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/393 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 3 unsolved
SDD proceeding with computation,3 properties remain. new max is 2048
SDD size :88547 after 107091
At refinement iteration 9 (OVERLAPS) 620/1013 variables, 347/367 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/1013 variables, 81/448 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/1013 variables, 0/448 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 12 (OVERLAPS) 62/1075 variables, 1/449 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/1075 variables, 0/449 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 14 (OVERLAPS) 71/1146 variables, 70/519 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/1146 variables, 1/520 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/1146 variables, 0/520 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 17 (OVERLAPS) 1/1147 variables, 1/521 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/1147 variables, 0/521 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 19 (OVERLAPS) 0/1147 variables, 0/521 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 1147/1147 variables, and 521 constraints, problems are : Problem set: 0 solved, 3 unsolved in 586 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 435/435 constraints, ReadFeed: 83/83 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 8/11 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 373/384 variables, 11/14 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/384 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/384 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/384 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 9/393 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/393 variables, 3/23 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/393 variables, 0/23 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (OVERLAPS) 620/1013 variables, 347/370 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/1013 variables, 81/451 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/1013 variables, 0/451 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (OVERLAPS) 62/1075 variables, 1/452 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:32] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 2 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/1075 variables, 1/453 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/1075 variables, 0/453 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 16 (OVERLAPS) 71/1146 variables, 70/523 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/1146 variables, 1/524 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:32] [INFO ] Deduced a trap along path composed of 3 places in 29 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 2 ms to minimize.
SDD proceeding with computation,3 properties remain. new max is 4096
SDD size :107091 after 227992
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [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 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 21 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:33] [INFO ] Deduced a trap along path composed of 3 places in 18 ms of which 0 ms to minimize.
At refinement iteration 18 (INCLUDED_ONLY) 0/1146 variables, 20/544 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 17 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:34] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
At refinement iteration 19 (INCLUDED_ONLY) 0/1146 variables, 20/564 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 22 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 25 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 24 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [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 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 19 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:35] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:36] [INFO ] Deduced a trap along path composed of 3 places in 23 ms of which 1 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/1146 variables, 20/584 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:36] [INFO ] Deduced a trap composed of 131 places in 193 ms of which 7 ms to minimize.
SDD proceeding with computation,3 properties remain. new max is 8192
SDD size :227992 after 1.58823e+06
At refinement iteration 21 (INCLUDED_ONLY) 0/1146 variables, 1/585 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:36] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:36] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:20:36] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 0 ms to minimize.
At refinement iteration 22 (INCLUDED_ONLY) 0/1146 variables, 3/588 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/1146 variables, 0/588 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 24 (OVERLAPS) 1/1147 variables, 1/589 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/1147 variables, 0/589 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 26 (OVERLAPS) 0/1147 variables, 0/589 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 1147/1147 variables, and 589 constraints, problems are : Problem set: 0 solved, 3 unsolved in 4977 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 435/435 constraints, ReadFeed: 83/83 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 64/64 constraints]
After SMT, in 5580ms problems are : Problem set: 0 solved, 3 unsolved
Fused 3 Parikh solutions to 2 different solutions.
SDD proceeding with computation,3 properties remain. new max is 16384
SDD size :1.58823e+06 after 2.02733e+07
Parikh walk visited 0 properties in 30001 ms.
Support contains 3 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Graph (complete) has 2150 edges and 435 vertex of which 432 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.1 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 432 transition count 1242
Applied a total of 6 rules in 62 ms. Remains 432 /435 variables (removed 3) and now considering 1242/1247 (removed 5) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 63 ms. Remains : 432/435 places, 1242/1247 transitions.
RANDOM walk for 40008 steps (8 resets) in 234 ms. (170 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40003 steps (8 resets) in 93 ms. (425 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (8 resets) in 73 ms. (540 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40003 steps (8 resets) in 74 ms. (533 steps per ms) remains 3/3 properties
SDD proceeding with computation,3 properties remain. new max is 32768
SDD size :2.02733e+07 after 2.97337e+08
Interrupted probabilistic random walk after 294083 steps, run timeout after 3001 ms. (steps per millisecond=97 ) properties seen :0 out of 3
Probabilistic random walk after 294083 steps, saw 180340 distinct states, run finished after 3002 ms. (steps per millisecond=97 ) properties seen :0
[2026-05-25 10:21:10] [INFO ] Flow matrix only has 707 transitions (discarded 535 similar events)
// Phase 1: matrix 707 rows 432 cols
[2026-05-25 10:21:10] [INFO ] Computed 3 invariants in 4 ms
[2026-05-25 10:21:10] [INFO ] State equation strengthened by 80 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 8/11 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 371/382 variables, 11/14 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/382 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/382 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 9/391 variables, 2/17 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/391 variables, 3/20 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/391 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 9 (OVERLAPS) 617/1008 variables, 346/366 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/1008 variables, 79/445 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/1008 variables, 0/445 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 12 (OVERLAPS) 62/1070 variables, 1/446 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/1070 variables, 0/446 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 14 (OVERLAPS) 68/1138 variables, 68/514 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/1138 variables, 0/514 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 16 (OVERLAPS) 1/1139 variables, 1/515 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/1139 variables, 0/515 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 18 (OVERLAPS) 0/1139 variables, 0/515 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 1139/1139 variables, and 515 constraints, problems are : Problem set: 0 solved, 3 unsolved in 486 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 432/432 constraints, ReadFeed: 80/80 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 8/11 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/11 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 371/382 variables, 11/14 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/382 variables, 1/15 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/382 variables, 3/18 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/382 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 9/391 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/391 variables, 3/23 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/391 variables, 0/23 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (OVERLAPS) 617/1008 variables, 346/369 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/1008 variables, 79/448 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:11] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 1 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/1008 variables, 1/449 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/1008 variables, 0/449 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 14 (OVERLAPS) 62/1070 variables, 1/450 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/1070 variables, 0/450 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 16 (OVERLAPS) 68/1138 variables, 68/518 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:11] [INFO ] Deduced a trap along path composed of 3 places in 15 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:11] [INFO ] Deduced a trap along path composed of 3 places in 14 ms of which 0 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/1138 variables, 2/520 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:11] [INFO ] Deduced a trap composed of 131 places in 193 ms of which 7 ms to minimize.
At refinement iteration 18 (INCLUDED_ONLY) 0/1138 variables, 1/521 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/1138 variables, 0/521 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 20 (OVERLAPS) 1/1139 variables, 1/522 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/1139 variables, 0/522 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 22 (OVERLAPS) 0/1139 variables, 0/522 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 1139/1139 variables, and 522 constraints, problems are : Problem set: 0 solved, 3 unsolved in 1573 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 432/432 constraints, ReadFeed: 80/80 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 2081ms problems are : Problem set: 0 solved, 3 unsolved
Fused 3 Parikh solutions to 2 different solutions.
Parikh walk visited 0 properties in 1 ms.
Support contains 3 out of 432 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 432/432 places, 1242/1242 transitions.
Applied a total of 0 rules in 60 ms. Remains 432 /432 variables (removed 0) and now considering 1242/1242 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 60 ms. Remains : 432/432 places, 1242/1242 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 432/432 places, 1242/1242 transitions.
Applied a total of 0 rules in 55 ms. Remains 432 /432 variables (removed 0) and now considering 1242/1242 (removed 0) transitions.
[2026-05-25 10:21:12] [INFO ] Flow matrix only has 707 transitions (discarded 535 similar events)
[2026-05-25 10:21:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:12] [INFO ] Implicit Places using invariants in 313 ms returned []
[2026-05-25 10:21:12] [INFO ] Flow matrix only has 707 transitions (discarded 535 similar events)
[2026-05-25 10:21:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:21:13] [INFO ] State equation strengthened by 80 read => feed constraints.
[2026-05-25 10:21:14] [INFO ] Implicit Places using invariants and state equation in 1578 ms returned []
Implicit Place search using SMT with State Equation took 1893 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:21:14] [INFO ] Redundant transitions in 27 ms returned []
Running 1240 sub problems to find dead transitions.
[2026-05-25 10:21:14] [INFO ] Flow matrix only has 707 transitions (discarded 535 similar events)
[2026-05-25 10:21:14] [INFO ] Invariant cache hit.
[2026-05-25 10:21:14] [INFO ] State equation strengthened by 80 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
Detected timeout of ITS tools.
[2026-05-25 10:21:18] [INFO ] Flatten gal took : 68 ms
[2026-05-25 10:21:18] [INFO ] Applying decomposition
[2026-05-25 10:21:19] [INFO ] Flatten gal took : 178 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/graph5983386526228933524.txt' '-o' '/tmp/graph5983386526228933524.bin' '-w' '/tmp/graph5983386526228933524.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5983386526228933524.bin' '-l' '-1' '-v' '-w' '/tmp/graph5983386526228933524.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:21:19] [INFO ] Decomposing Gal with order
[2026-05-25 10:21:19] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:21:19] [INFO ] Removed a total of 2138 redundant transitions.
[2026-05-25 10:21:19] [INFO ] Flatten gal took : 155 ms
[2026-05-25 10:21:19] [INFO ] Fuse similar labels procedure discarded/fused a total of 854 labels/synchronizations in 69 ms.
[2026-05-25 10:21:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4010065064740931455.gal : 12 ms
[2026-05-25 10:21:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18338135930093075176.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/ReachabilityCardinality4010065064740931455.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18338135930093075176.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/ReachabilityCardinality18338135930093075176.prop.
At refinement iteration 0 (INCLUDED_ONLY) 0/432 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1240 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:21:25] [INFO ] Deduced a trap composed of 131 places in 162 ms of which 8 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/432 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1240 unsolved
Error getting values : (error "ParserException while parsing response: ((s0 1.0)
(s1 timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 432/1139 variables, and 4 constraints, problems are : Problem set: 0 solved, 1240 unsolved in 30024 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/432 constraints, ReadFeed: 0/80 constraints, PredecessorRefiner: 1240/1240 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1240 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/432 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1240 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/432 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1240 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/432 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1240 unsolved
At refinement iteration 3 (OVERLAPS) 707/1139 variables, 432/436 constraints. Problems are: Problem set: 0 solved, 1240 unsolved
Detected timeout of ITS tools.
At refinement iteration 4 (INCLUDED_ONLY) 0/1139 variables, 80/516 constraints. Problems are: Problem set: 0 solved, 1240 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1139/1139 variables, and 1756 constraints, problems are : Problem set: 0 solved, 1240 unsolved in 30861 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 432/432 constraints, ReadFeed: 80/80 constraints, PredecessorRefiner: 1240/1240 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62723ms problems are : Problem set: 0 solved, 1240 unsolved
Search for dead transitions found 0 dead transitions in 62733ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 64727 ms. Remains : 432/432 places, 1242/1242 transitions.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[1735, 3, 483, 1349] Max Struct:[+inf, +inf, +inf, +inf]
Starting property specific reduction for FunctionPointer-PT-c002-UpperBounds-00
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:22:17] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
// Phase 1: matrix 712 rows 435 cols
[2026-05-25 10:22:17] [INFO ] Computed 3 invariants in 11 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 30 ms. (322 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:[0] Max Struct:[+inf]
[2026-05-25 10:22:17] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:22:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:22:17] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:22:17] [INFO ] [Real]Absence check using state equation in 134 ms returned sat
[2026-05-25 10:22:17] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:22:17] [INFO ] [Real]Added 83 Read/Feed constraints in 38 ms returned sat
[2026-05-25 10:22:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:22:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:22:17] [INFO ] [Nat]Absence check using state equation in 145 ms returned sat
[2026-05-25 10:22:17] [INFO ] [Nat]Added 83 Read/Feed constraints in 38 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:18] [INFO ] Deduced a trap composed of 72 places in 258 ms of which 40 ms to minimize.
[2026-05-25 10:22:18] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 331 ms
[2026-05-25 10:22:18] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 66 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:18] [INFO ] Deduced a trap composed of 131 places in 194 ms of which 8 ms to minimize.
[2026-05-25 10:22:18] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 248 ms
[2026-05-25 10:22:18] [INFO ] Added : 5 causal constraints over 3 iterations in 513 ms. Result :sat
Minimization took 278 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Graph (complete) has 2150 edges and 435 vertex of which 432 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 432 transition count 1242
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 8 place count 430 transition count 1236
Iterating global reduction 1 with 2 rules applied. Total rules applied 10 place count 430 transition count 1236
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 12 place count 428 transition count 1232
Iterating global reduction 1 with 2 rules applied. Total rules applied 14 place count 428 transition count 1232
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 16 place count 426 transition count 1226
Iterating global reduction 1 with 2 rules applied. Total rules applied 18 place count 426 transition count 1226
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 20 place count 424 transition count 1222
Iterating global reduction 1 with 2 rules applied. Total rules applied 22 place count 424 transition count 1222
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 24 place count 422 transition count 1218
Iterating global reduction 1 with 2 rules applied. Total rules applied 26 place count 422 transition count 1218
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 28 place count 420 transition count 1214
Iterating global reduction 1 with 2 rules applied. Total rules applied 30 place count 420 transition count 1214
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 32 place count 418 transition count 1210
Iterating global reduction 1 with 2 rules applied. Total rules applied 34 place count 418 transition count 1210
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 35 place count 417 transition count 1208
Iterating global reduction 1 with 1 rules applied. Total rules applied 36 place count 417 transition count 1208
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 37 place count 416 transition count 1206
Iterating global reduction 1 with 1 rules applied. Total rules applied 38 place count 416 transition count 1206
Applied a total of 38 rules in 139 ms. Remains 416 /435 variables (removed 19) and now considering 1206/1247 (removed 41) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 141 ms. Remains : 416/435 places, 1206/1247 transitions.
[2026-05-25 10:22:19] [INFO ] Flow matrix only has 681 transitions (discarded 525 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {253=1, 340=1, 666=1, 679=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {233=1, 320=1, 646=1, 679=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 53 ms. (steps per millisecond=188 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:22:19] [INFO ] Flow matrix only has 681 transitions (discarded 525 similar events)
// Phase 1: matrix 681 rows 416 cols
[2026-05-25 10:22:19] [INFO ] Computed 3 invariants in 8 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 2577 ms. (387 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 642 ms. (1555 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:22:22] [INFO ] Flow matrix only has 681 transitions (discarded 525 similar events)
[2026-05-25 10:22:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:22] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:22:22] [INFO ] [Real]Absence check using state equation in 154 ms returned sat
[2026-05-25 10:22:22] [INFO ] State equation strengthened by 74 read => feed constraints.
[2026-05-25 10:22:22] [INFO ] [Real]Added 74 Read/Feed constraints in 21 ms returned sat
[2026-05-25 10:22:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:22:23] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:22:23] [INFO ] [Nat]Absence check using state equation in 133 ms returned sat
[2026-05-25 10:22:23] [INFO ] [Nat]Added 74 Read/Feed constraints in 21 ms returned sat
[2026-05-25 10:22:23] [INFO ] Computed and/alt/rep : 330/1240/330 causal constraints (skipped 349 transitions) in 82 ms.
[2026-05-25 10:22:23] [INFO ] Added : 4 causal constraints over 2 iterations in 256 ms. Result :sat
Minimization took 296 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 416 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 416/416 places, 1206/1206 transitions.
Applied a total of 0 rules in 63 ms. Remains 416 /416 variables (removed 0) and now considering 1206/1206 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 63 ms. Remains : 416/416 places, 1206/1206 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 416/416 places, 1206/1206 transitions.
Applied a total of 0 rules in 56 ms. Remains 416 /416 variables (removed 0) and now considering 1206/1206 (removed 0) transitions.
[2026-05-25 10:22:23] [INFO ] Flow matrix only has 681 transitions (discarded 525 similar events)
[2026-05-25 10:22:23] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:24] [INFO ] Implicit Places using invariants in 310 ms returned []
[2026-05-25 10:22:24] [INFO ] Flow matrix only has 681 transitions (discarded 525 similar events)
[2026-05-25 10:22:24] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:22:24] [INFO ] State equation strengthened by 74 read => feed constraints.
[2026-05-25 10:22:27] [INFO ] Implicit Places using invariants and state equation in 3237 ms returned []
Implicit Place search using SMT with State Equation took 3549 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:22:27] [INFO ] Redundant transitions in 24 ms returned []
Running 1204 sub problems to find dead transitions.
[2026-05-25 10:22:27] [INFO ] Flow matrix only has 681 transitions (discarded 525 similar events)
[2026-05-25 10:22:27] [INFO ] Invariant cache hit.
[2026-05-25 10:22:27] [INFO ] State equation strengthened by 74 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/416 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1204 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:22:37] [INFO ] Deduced a trap composed of 131 places in 152 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/416 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1204 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 416/1097 variables, and 4 constraints, problems are : Problem set: 0 solved, 1204 unsolved in 30018 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/416 constraints, ReadFeed: 0/74 constraints, PredecessorRefiner: 1204/1204 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1204 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/416 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1204 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/416 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1204 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/416 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1204 unsolved
At refinement iteration 3 (OVERLAPS) 681/1097 variables, 416/420 constraints. Problems are: Problem set: 0 solved, 1204 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1097 variables, 74/494 constraints. Problems are: Problem set: 0 solved, 1204 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1097/1097 variables, and 1698 constraints, problems are : Problem set: 0 solved, 1204 unsolved in 30807 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 416/416 constraints, ReadFeed: 74/74 constraints, PredecessorRefiner: 1204/1204 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62705ms problems are : Problem set: 0 solved, 1204 unsolved
Search for dead transitions found 0 dead transitions in 62708ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 66351 ms. Remains : 416/416 places, 1206/1206 transitions.
[2026-05-25 10:23:30] [INFO ] Flow matrix only has 681 transitions (discarded 525 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {253=1, 340=1, 666=1, 679=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {233=1, 320=1, 646=1, 679=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:23:30] [INFO ] Flatten gal took : 75 ms
RANDOM walk for 40003 steps (8 resets) in 354 ms. (112 steps per ms) remains 1/1 properties
BEST_FIRST walk for 30133 steps (6 resets) in 118 ms. (253 steps per ms) remains 0/1 properties
[2026-05-25 10:23:30] [INFO ] Flatten gal took : 81 ms
[2026-05-25 10:23:30] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4640395045524657072.gal : 8 ms
[2026-05-25 10:23:30] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5375680792100857652.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/ReachabilityCardinality4640395045524657072.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5375680792100857652.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
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:[0] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-c002-UpperBounds-00 in 73718 ms.
Starting property specific reduction for FunctionPointer-PT-c002-UpperBounds-02
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:23:30] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
// Phase 1: matrix 712 rows 435 cols
[2026-05-25 10:23:30] [INFO ] Computed 3 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 29 ms. (333 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 9 ms. (1000 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:23:30] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:23:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:23:31] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Real]Absence check using state equation in 130 ms returned sat
[2026-05-25 10:23:31] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:23:31] [INFO ] [Real]Added 83 Read/Feed constraints in 27 ms returned sat
[2026-05-25 10:23:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:23:31] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Nat]Absence check using state equation in 134 ms returned sat
[2026-05-25 10:23:31] [INFO ] [Nat]Added 83 Read/Feed constraints in 54 ms returned sat
[2026-05-25 10:23:31] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 69 ms.
[2026-05-25 10:23:31] [INFO ] Added : 2 causal constraints over 1 iterations in 168 ms. Result :sat
Minimization took 299 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[+inf]
Support contains 1 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 432 transition count 1239
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 432 transition count 1239
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 9 place count 429 transition count 1233
Iterating global reduction 0 with 3 rules applied. Total rules applied 12 place count 429 transition count 1233
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 15 place count 426 transition count 1225
Iterating global reduction 0 with 3 rules applied. Total rules applied 18 place count 426 transition count 1225
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 20 place count 424 transition count 1221
Iterating global reduction 0 with 2 rules applied. Total rules applied 22 place count 424 transition count 1221
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 24 place count 422 transition count 1217
Iterating global reduction 0 with 2 rules applied. Total rules applied 26 place count 422 transition count 1217
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 28 place count 420 transition count 1213
Iterating global reduction 0 with 2 rules applied. Total rules applied 30 place count 420 transition count 1213
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 32 place count 418 transition count 1209
Iterating global reduction 0 with 2 rules applied. Total rules applied 34 place count 418 transition count 1209
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 35 place count 417 transition count 1207
Iterating global reduction 0 with 1 rules applied. Total rules applied 36 place count 417 transition count 1207
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 37 place count 416 transition count 1205
Iterating global reduction 0 with 1 rules applied. Total rules applied 38 place count 416 transition count 1205
Applied a total of 38 rules in 130 ms. Remains 416 /435 variables (removed 19) and now considering 1205/1247 (removed 42) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 131 ms. Remains : 416/435 places, 1205/1247 transitions.
[2026-05-25 10:23:32] [INFO ] Flow matrix only has 680 transitions (discarded 525 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {219=1, 303=1, 501=1, 675=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {256=1, 340=1, 666=1, 678=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 44 ms. (steps per millisecond=227 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 10:23:32] [INFO ] Flow matrix only has 680 transitions (discarded 525 similar events)
// Phase 1: matrix 680 rows 416 cols
[2026-05-25 10:23:32] [INFO ] Computed 3 invariants in 8 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1] Max Struct:[+inf]
RANDOM walk for 1000003 steps (2 resets) in 2529 ms. (395 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 603 ms. (1655 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[+inf]
[2026-05-25 10:23:35] [INFO ] Flow matrix only has 680 transitions (discarded 525 similar events)
[2026-05-25 10:23:35] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:35] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:23:35] [INFO ] [Real]Absence check using state equation in 130 ms returned sat
[2026-05-25 10:23:35] [INFO ] State equation strengthened by 75 read => feed constraints.
[2026-05-25 10:23:35] [INFO ] [Real]Added 75 Read/Feed constraints in 25 ms returned sat
[2026-05-25 10:23:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:23:35] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:23:36] [INFO ] [Nat]Absence check using state equation in 131 ms returned sat
[2026-05-25 10:23:36] [INFO ] [Nat]Added 75 Read/Feed constraints in 49 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:36] [INFO ] Deduced a trap composed of 69 places in 200 ms of which 24 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:36] [INFO ] Deduced a trap composed of 131 places in 160 ms of which 7 ms to minimize.
[2026-05-25 10:23:36] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 446 ms
[2026-05-25 10:23:36] [INFO ] Computed and/alt/rep : 333/1252/331 causal constraints (skipped 347 transitions) in 66 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:36] [INFO ] Deduced a trap composed of 132 places in 251 ms of which 64 ms to minimize.
[2026-05-25 10:23:37] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 319 ms
[2026-05-25 10:23:37] [INFO ] Added : 7 causal constraints over 4 iterations in 586 ms. Result :sat
Minimization took 254 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 416 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 416/416 places, 1205/1205 transitions.
Applied a total of 0 rules in 51 ms. Remains 416 /416 variables (removed 0) and now considering 1205/1205 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 51 ms. Remains : 416/416 places, 1205/1205 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 416/416 places, 1205/1205 transitions.
Applied a total of 0 rules in 50 ms. Remains 416 /416 variables (removed 0) and now considering 1205/1205 (removed 0) transitions.
[2026-05-25 10:23:37] [INFO ] Flow matrix only has 680 transitions (discarded 525 similar events)
[2026-05-25 10:23:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:37] [INFO ] Implicit Places using invariants in 294 ms returned []
[2026-05-25 10:23:37] [INFO ] Flow matrix only has 680 transitions (discarded 525 similar events)
[2026-05-25 10:23:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:23:37] [INFO ] State equation strengthened by 75 read => feed constraints.
[2026-05-25 10:23:39] [INFO ] Implicit Places using invariants and state equation in 1569 ms returned []
Implicit Place search using SMT with State Equation took 1868 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:23:39] [INFO ] Redundant transitions in 25 ms returned []
Running 1203 sub problems to find dead transitions.
[2026-05-25 10:23:39] [INFO ] Flow matrix only has 680 transitions (discarded 525 similar events)
[2026-05-25 10:23:39] [INFO ] Invariant cache hit.
[2026-05-25 10:23:39] [INFO ] State equation strengthened by 75 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/416 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1203 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:23:49] [INFO ] Deduced a trap composed of 131 places in 161 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/416 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1203 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 416/1096 variables, and 4 constraints, problems are : Problem set: 0 solved, 1203 unsolved in 30026 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/416 constraints, ReadFeed: 0/75 constraints, PredecessorRefiner: 1203/1203 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1203 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/416 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1203 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/416 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1203 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/416 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1203 unsolved
At refinement iteration 3 (OVERLAPS) 680/1096 variables, 416/420 constraints. Problems are: Problem set: 0 solved, 1203 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1096 variables, 75/495 constraints. Problems are: Problem set: 0 solved, 1203 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1096/1096 variables, and 1698 constraints, problems are : Problem set: 0 solved, 1203 unsolved in 30795 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 416/416 constraints, ReadFeed: 75/75 constraints, PredecessorRefiner: 1203/1203 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62474ms problems are : Problem set: 0 solved, 1203 unsolved
Search for dead transitions found 0 dead transitions in 62476ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 64427 ms. Remains : 416/416 places, 1205/1205 transitions.
[2026-05-25 10:24:41] [INFO ] Flow matrix only has 680 transitions (discarded 525 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {219=1, 303=1, 501=1, 675=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {256=1, 340=1, 666=1, 678=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 43 ms. (steps per millisecond=232 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[1] Max Struct:[+inf]
RANDOM walk for 40000 steps (8 resets) in 210 ms. (189 steps per ms) remains 1/1 properties
[2026-05-25 10:24:42] [INFO ] Flatten gal took : 68 ms
BEST_FIRST walk for 40004 steps (8 resets) in 79 ms. (500 steps per ms) remains 1/1 properties
[2026-05-25 10:24:42] [INFO ] Flatten gal took : 77 ms
[2026-05-25 10:24:42] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1178957841240368514.gal : 7 ms
[2026-05-25 10:24:42] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10599182873158696990.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/ReachabilityCardinality1178957841240368514.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10599182873158696990.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/ReachabilityCardinality10599182873158696990.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 27
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :27 after 1033
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1033 after 19105
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 17 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,53763,1.84431,55836,2,1516,9,275108,6,0,2871,20020,0
Total reachable state count : 53763
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
MIN0,1,1.84592,55836,2,417,9,275108,7,0,2874,20020,0
ITS tools runner thread asked to quit. Dying gracefully.
Interrupted probabilistic random walk after 425597 steps, run timeout after 3001 ms. (steps per millisecond=141 ) properties seen :0 out of 1
Probabilistic random walk after 425597 steps, saw 260975 distinct states, run finished after 3001 ms. (steps per millisecond=141 ) properties seen :0
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[1] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-c002-UpperBounds-02 in 74457 ms.
Starting property specific reduction for FunctionPointer-PT-c002-UpperBounds-05
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:24:45] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
// Phase 1: matrix 712 rows 435 cols
[2026-05-25 10:24:45] [INFO ] Computed 3 invariants in 6 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (2 resets) in 28 ms. (344 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:[0] Max Struct:[+inf]
[2026-05-25 10:24:45] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:24:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:24:45] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:24:45] [INFO ] [Real]Absence check using state equation in 136 ms returned sat
[2026-05-25 10:24:45] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:24:45] [INFO ] [Real]Added 83 Read/Feed constraints in 28 ms returned sat
[2026-05-25 10:24:45] [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 10:24:45] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:24:45] [INFO ] [Nat]Absence check using state equation in 138 ms returned sat
[2026-05-25 10:24:45] [INFO ] [Nat]Added 83 Read/Feed constraints in 34 ms returned sat
[2026-05-25 10:24:46] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 69 ms.
[2026-05-25 10:24:46] [INFO ] Added : 21 causal constraints over 5 iterations in 391 ms. Result :sat
Minimization took 272 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Graph (complete) has 2150 edges and 435 vertex of which 432 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 432 transition count 1242
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 8 place count 430 transition count 1236
Iterating global reduction 1 with 2 rules applied. Total rules applied 10 place count 430 transition count 1236
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 12 place count 428 transition count 1232
Iterating global reduction 1 with 2 rules applied. Total rules applied 14 place count 428 transition count 1232
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 16 place count 426 transition count 1228
Iterating global reduction 1 with 2 rules applied. Total rules applied 18 place count 426 transition count 1228
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 19 place count 425 transition count 1226
Iterating global reduction 1 with 1 rules applied. Total rules applied 20 place count 425 transition count 1226
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 21 place count 424 transition count 1224
Iterating global reduction 1 with 1 rules applied. Total rules applied 22 place count 424 transition count 1224
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 23 place count 423 transition count 1222
Iterating global reduction 1 with 1 rules applied. Total rules applied 24 place count 423 transition count 1222
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 25 place count 422 transition count 1220
Iterating global reduction 1 with 1 rules applied. Total rules applied 26 place count 422 transition count 1220
Applied a total of 26 rules in 120 ms. Remains 422 /435 variables (removed 13) and now considering 1220/1247 (removed 27) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 120 ms. Remains : 422/435 places, 1220/1247 transitions.
[2026-05-25 10:24:46] [INFO ] Flow matrix only has 689 transitions (discarded 531 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {228=1, 320=1, 518=1, 684=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {252=1, 344=1, 670=1, 688=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 45 ms. (steps per millisecond=222 ) properties (out of 1) seen :[2]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 10:24:47] [INFO ] Flow matrix only has 689 transitions (discarded 531 similar events)
// Phase 1: matrix 689 rows 422 cols
[2026-05-25 10:24:47] [INFO ] Computed 3 invariants in 8 ms
Current structural bounds on expressions (after invariants) : Max Seen:[2] Max Struct:[+inf]
RANDOM walk for 1000002 steps (2 resets) in 2758 ms. (362 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 722 ms. (1383 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 10:24:50] [INFO ] Flow matrix only has 689 transitions (discarded 531 similar events)
[2026-05-25 10:24:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:24:50] [INFO ] [Real]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:24:50] [INFO ] [Real]Absence check using state equation in 136 ms returned sat
[2026-05-25 10:24:50] [INFO ] State equation strengthened by 75 read => feed constraints.
[2026-05-25 10:24:50] [INFO ] [Real]Added 75 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:24:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:24:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:24:50] [INFO ] [Nat]Absence check using state equation in 145 ms returned sat
[2026-05-25 10:24:51] [INFO ] [Nat]Added 75 Read/Feed constraints in 30 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:51] [INFO ] Deduced a trap composed of 70 places in 208 ms of which 24 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:24:51] [INFO ] Deduced a trap composed of 70 places in 201 ms of which 25 ms to minimize.
[2026-05-25 10:24:51] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 479 ms
[2026-05-25 10:24:51] [INFO ] Computed and/alt/rep : 332/1248/332 causal constraints (skipped 355 transitions) in 67 ms.
[2026-05-25 10:24:51] [INFO ] Added : 9 causal constraints over 3 iterations in 256 ms. Result :sat
Minimization took 250 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[2] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2] Max Struct:[+inf]
Support contains 1 out of 422 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 422/422 places, 1220/1220 transitions.
Applied a total of 0 rules in 67 ms. Remains 422 /422 variables (removed 0) and now considering 1220/1220 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 67 ms. Remains : 422/422 places, 1220/1220 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 422/422 places, 1220/1220 transitions.
Applied a total of 0 rules in 52 ms. Remains 422 /422 variables (removed 0) and now considering 1220/1220 (removed 0) transitions.
[2026-05-25 10:24:52] [INFO ] Flow matrix only has 689 transitions (discarded 531 similar events)
[2026-05-25 10:24:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:52] [INFO ] Implicit Places using invariants in 292 ms returned []
[2026-05-25 10:24:52] [INFO ] Flow matrix only has 689 transitions (discarded 531 similar events)
[2026-05-25 10:24:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:24:52] [INFO ] State equation strengthened by 75 read => feed constraints.
[2026-05-25 10:24:54] [INFO ] Implicit Places using invariants and state equation in 1550 ms returned []
Implicit Place search using SMT with State Equation took 1844 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:24:54] [INFO ] Redundant transitions in 22 ms returned []
Running 1218 sub problems to find dead transitions.
[2026-05-25 10:24:54] [INFO ] Flow matrix only has 689 transitions (discarded 531 similar events)
[2026-05-25 10:24:54] [INFO ] Invariant cache hit.
[2026-05-25 10:24:54] [INFO ] State equation strengthened by 75 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/422 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1218 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:25:03] [INFO ] Deduced a trap composed of 131 places in 144 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/422 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1218 unsolved
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0.0 org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 422/1111 variables, and 4 constraints, problems are : Problem set: 0 solved, 1218 unsolved in 30021 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/422 constraints, ReadFeed: 0/75 constraints, PredecessorRefiner: 1218/1218 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1218 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/422 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1218 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/422 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1218 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/422 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1218 unsolved
At refinement iteration 3 (OVERLAPS) 689/1111 variables, 422/426 constraints. Problems are: Problem set: 0 solved, 1218 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1111 variables, 75/501 constraints. Problems are: Problem set: 0 solved, 1218 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1111/1111 variables, and 1719 constraints, problems are : Problem set: 0 solved, 1218 unsolved in 30799 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 422/422 constraints, ReadFeed: 75/75 constraints, PredecessorRefiner: 1218/1218 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62762ms problems are : Problem set: 0 solved, 1218 unsolved
Search for dead transitions found 0 dead transitions in 62765ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 64703 ms. Remains : 422/422 places, 1220/1220 transitions.
[2026-05-25 10:25:56] [INFO ] Flow matrix only has 689 transitions (discarded 531 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {228=1, 320=1, 518=1, 684=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 344=1, 670=1, 688=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 53 ms. (steps per millisecond=188 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[2] Max Struct:[+inf]
[2026-05-25 10:25:57] [INFO ] Flatten gal took : 61 ms
RANDOM walk for 40004 steps (8 resets) in 171 ms. (232 steps per ms) remains 1/1 properties
BEST_FIRST walk for 34902 steps (7 resets) in 40 ms. (851 steps per ms) remains 0/1 properties
[2026-05-25 10:25:57] [INFO ] Flatten gal took : 31 ms
[2026-05-25 10:25:57] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15825167808913879853.gal : 5 ms
[2026-05-25 10:25:57] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3003479502951920788.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/ReachabilityCardinality15825167808913879853.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3003479502951920788.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 ...329
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[2] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-c002-UpperBounds-05 in 71828 ms.
Starting property specific reduction for FunctionPointer-PT-c002-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 10:25:57] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
// Phase 1: matrix 712 rows 435 cols
[2026-05-25 10:25:57] [INFO ] Computed 3 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 28 ms. (344 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:[0] Max Struct:[+inf]
[2026-05-25 10:25:57] [INFO ] Flow matrix only has 712 transitions (discarded 535 similar events)
[2026-05-25 10:25:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 10:25:57] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:25:57] [INFO ] [Real]Absence check using state equation in 130 ms returned sat
[2026-05-25 10:25:57] [INFO ] State equation strengthened by 83 read => feed constraints.
[2026-05-25 10:25:57] [INFO ] [Real]Added 83 Read/Feed constraints in 21 ms returned sat
[2026-05-25 10:25:57] [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 10:25:57] [INFO ] [Nat]Absence check using 3 positive place invariants in 5 ms returned sat
[2026-05-25 10:25:57] [INFO ] [Nat]Absence check using state equation in 130 ms returned sat
[2026-05-25 10:25:57] [INFO ] [Nat]Added 83 Read/Feed constraints in 29 ms returned sat
[2026-05-25 10:25:57] [INFO ] Computed and/alt/rep : 339/2046/339 causal constraints (skipped 371 transitions) in 66 ms.
[2026-05-25 10:25:58] [INFO ] Added : 23 causal constraints over 6 iterations in 347 ms. Result :sat
Minimization took 260 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 435 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 435/435 places, 1247/1247 transitions.
Graph (complete) has 2150 edges and 435 vertex of which 432 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 6 place count 432 transition count 1242
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 8 place count 430 transition count 1238
Iterating global reduction 1 with 2 rules applied. Total rules applied 10 place count 430 transition count 1238
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 12 place count 428 transition count 1234
Iterating global reduction 1 with 2 rules applied. Total rules applied 14 place count 428 transition count 1234
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 16 place count 426 transition count 1228
Iterating global reduction 1 with 2 rules applied. Total rules applied 18 place count 426 transition count 1228
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 19 place count 425 transition count 1226
Iterating global reduction 1 with 1 rules applied. Total rules applied 20 place count 425 transition count 1226
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 21 place count 424 transition count 1224
Iterating global reduction 1 with 1 rules applied. Total rules applied 22 place count 424 transition count 1224
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 23 place count 423 transition count 1222
Iterating global reduction 1 with 1 rules applied. Total rules applied 24 place count 423 transition count 1222
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 25 place count 422 transition count 1220
Iterating global reduction 1 with 1 rules applied. Total rules applied 26 place count 422 transition count 1220
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 27 place count 421 transition count 1218
Iterating global reduction 1 with 1 rules applied. Total rules applied 28 place count 421 transition count 1218
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 29 place count 420 transition count 1216
Iterating global reduction 1 with 1 rules applied. Total rules applied 30 place count 420 transition count 1216
Applied a total of 30 rules in 132 ms. Remains 420 /435 variables (removed 15) and now considering 1216/1247 (removed 31) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 132 ms. Remains : 420/435 places, 1216/1247 transitions.
[2026-05-25 10:25:58] [INFO ] Flow matrix only has 687 transitions (discarded 529 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {244=1, 334=1, 660=1, 685=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 342=1, 668=1, 685=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 53 ms. (steps per millisecond=188 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:25:58] [INFO ] Flow matrix only has 687 transitions (discarded 529 similar events)
// Phase 1: matrix 687 rows 420 cols
[2026-05-25 10:25:58] [INFO ] Computed 3 invariants in 6 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 2517 ms. (397 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 615 ms. (1623 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:26:01] [INFO ] Flow matrix only has 687 transitions (discarded 529 similar events)
[2026-05-25 10:26:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:01] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:26:02] [INFO ] [Real]Absence check using state equation in 131 ms returned sat
[2026-05-25 10:26:02] [INFO ] State equation strengthened by 75 read => feed constraints.
[2026-05-25 10:26:02] [INFO ] [Real]Added 75 Read/Feed constraints in 24 ms returned sat
[2026-05-25 10:26:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 10:26:02] [INFO ] [Nat]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-25 10:26:02] [INFO ] [Nat]Absence check using state equation in 121 ms returned sat
[2026-05-25 10:26:02] [INFO ] [Nat]Added 75 Read/Feed constraints in 20 ms returned sat
[2026-05-25 10:26:02] [INFO ] Computed and/alt/rep : 332/1248/332 causal constraints (skipped 353 transitions) in 65 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:02] [INFO ] Deduced a trap composed of 131 places in 186 ms of which 8 ms to minimize.
[2026-05-25 10:26:02] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 263 ms
[2026-05-25 10:26:03] [INFO ] Added : 9 causal constraints over 2 iterations in 770 ms. Result :sat
Minimization took 253 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[+inf]
Support contains 1 out of 420 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 420/420 places, 1216/1216 transitions.
Applied a total of 0 rules in 53 ms. Remains 420 /420 variables (removed 0) and now considering 1216/1216 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 53 ms. Remains : 420/420 places, 1216/1216 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 420/420 places, 1216/1216 transitions.
Applied a total of 0 rules in 51 ms. Remains 420 /420 variables (removed 0) and now considering 1216/1216 (removed 0) transitions.
[2026-05-25 10:26:03] [INFO ] Flow matrix only has 687 transitions (discarded 529 similar events)
[2026-05-25 10:26:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:03] [INFO ] Implicit Places using invariants in 280 ms returned []
[2026-05-25 10:26:03] [INFO ] Flow matrix only has 687 transitions (discarded 529 similar events)
[2026-05-25 10:26:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-25 10:26:03] [INFO ] State equation strengthened by 75 read => feed constraints.
[2026-05-25 10:26:06] [INFO ] Implicit Places using invariants and state equation in 2312 ms returned []
Implicit Place search using SMT with State Equation took 2597 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-25 10:26:06] [INFO ] Redundant transitions in 32 ms returned []
Running 1214 sub problems to find dead transitions.
[2026-05-25 10:26:06] [INFO ] Flow matrix only has 687 transitions (discarded 529 similar events)
[2026-05-25 10:26:06] [INFO ] Invariant cache hit.
[2026-05-25 10:26:06] [INFO ] State equation strengthened by 75 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/420 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1214 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 10:26:16] [INFO ] Deduced a trap composed of 131 places in 155 ms of which 7 ms to minimize.
At refinement iteration 1 (INCLUDED_ONLY) 0/420 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1214 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 420/1107 variables, and 4 constraints, problems are : Problem set: 0 solved, 1214 unsolved in 30019 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 0/420 constraints, ReadFeed: 0/75 constraints, PredecessorRefiner: 1214/1214 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1214 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/420 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1214 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/420 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1214 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/420 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1214 unsolved
At refinement iteration 3 (OVERLAPS) 687/1107 variables, 420/424 constraints. Problems are: Problem set: 0 solved, 1214 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1107 variables, 75/499 constraints. Problems are: Problem set: 0 solved, 1214 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1107/1107 variables, and 1713 constraints, problems are : Problem set: 0 solved, 1214 unsolved in 30922 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 420/420 constraints, ReadFeed: 75/75 constraints, PredecessorRefiner: 1214/1214 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62682ms problems are : Problem set: 0 solved, 1214 unsolved
Search for dead transitions found 0 dead transitions in 62684ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 65377 ms. Remains : 420/420 places, 1216/1216 transitions.
[2026-05-25 10:27:08] [INFO ] Flow matrix only has 687 transitions (discarded 529 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {244=1, 334=1, 660=1, 685=1}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {252=1, 342=1, 668=1, 685=1}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 42 ms. (steps per millisecond=238 ) properties (out of 1) seen :[0]
Current structural bounds on expressions (after cover walk) : Max Seen:[0] Max Struct:[+inf]
[2026-05-25 10:27:09] [INFO ] Flatten gal took : 34 ms
RANDOM walk for 40003 steps (8 resets) in 185 ms. (215 steps per ms) remains 1/1 properties
BEST_FIRST walk for 30201 steps (6 resets) in 26 ms. (1118 steps per ms) remains 0/1 properties
[2026-05-25 10:27:09] [INFO ] Flatten gal took : 37 ms
[2026-05-25 10:27:09] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1978305890754861030.gal : 6 ms
[2026-05-25 10:27:09] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9605068378986665734.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/ReachabilityCardinality1978305890754861030.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9605068378986665734.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:[0] Max Struct:[+inf]
Ending property specific reduction for FunctionPointer-PT-c002-UpperBounds-09 in 72020 ms.
[2026-05-25 10:27:09] [INFO ] Flatten gal took : 28 ms
[2026-05-25 10:27:09] [INFO ] Applying decomposition
[2026-05-25 10:27:09] [INFO ] Flatten gal took : 29 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/graph8321574449085472979.txt' '-o' '/tmp/graph8321574449085472979.bin' '-w' '/tmp/graph8321574449085472979.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph8321574449085472979.bin' '-l' '-1' '-v' '-w' '/tmp/graph8321574449085472979.weights' '-q' '0' '-e' '0.001'
[2026-05-25 10:27:09] [INFO ] Decomposing Gal with order
[2026-05-25 10:27:09] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-25 10:27:09] [INFO ] Removed a total of 2135 redundant transitions.
[2026-05-25 10:27:09] [INFO ] Flatten gal took : 61 ms
[2026-05-25 10:27:09] [INFO ] Fuse similar labels procedure discarded/fused a total of 850 labels/synchronizations in 41 ms.
[2026-05-25 10:27:09] [INFO ] Time to serialize gal into /tmp/UpperBounds14076394399746081860.gal : 6 ms
[2026-05-25 10:27:09] [INFO ] Time to serialize properties into /tmp/UpperBounds6546602558890040403.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/UpperBounds14076394399746081860.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds6546602558890040403.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/UpperBounds6546602558890040403.prop.
Detected timeout of ITS tools.
[2026-05-25 10:54:16] [INFO ] Flatten gal took : 198 ms
[2026-05-25 10:54:16] [INFO ] Time to serialize gal into /tmp/UpperBounds11199358609610141512.gal : 17 ms
[2026-05-25 10:54:16] [INFO ] Time to serialize properties into /tmp/UpperBounds570920026318005527.prop : 3 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/UpperBounds11199358609610141512.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds570920026318005527.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/UpperBounds570920026318005527.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-c002"
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-c002, 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-177961079800015"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/FunctionPointer-PT-c002.tgz
mv FunctionPointer-PT-c002 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 '
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 ;