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.r367-tall-178024404700019.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 LastZero-PT-N24, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r367-tall-178024404700019
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 5.7M
-rw-r--r-- 1 mcc users 8.0K May 27 10:27 CTLCardinality.txt
-rw-r--r-- 1 mcc users 77K May 27 10:27 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.2K May 27 10:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 68K May 27 10:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.4K Jun 16 12:27 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Jun 16 12:27 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Jun 16 12:27 LTLFireability.txt
-rw-r--r-- 1 mcc users 20K Jun 16 12:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 26 18:17 NewModel
-rw-r--r-- 1 mcc users 13K May 27 10:27 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 115K May 27 10:27 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.6K May 27 10:27 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 60K May 27 10:27 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Jun 16 12:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Jun 16 12:28 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 26 18:17 equiv_col
-rw-r--r-- 1 mcc users 4 May 26 18:17 instance
-rw-r--r-- 1 mcc users 6 May 26 18:17 iscolored
-rw-r--r-- 1 mcc users 5.2M Jun 10 11:58 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 LastZero-PT-N24-UpperBounds-00
FORMULA_NAME LastZero-PT-N24-UpperBounds-01
FORMULA_NAME LastZero-PT-N24-UpperBounds-02
FORMULA_NAME LastZero-PT-N24-UpperBounds-03
FORMULA_NAME LastZero-PT-N24-UpperBounds-04
FORMULA_NAME LastZero-PT-N24-UpperBounds-05
FORMULA_NAME LastZero-PT-N24-UpperBounds-06
FORMULA_NAME LastZero-PT-N24-UpperBounds-07
FORMULA_NAME LastZero-PT-N24-UpperBounds-08
FORMULA_NAME LastZero-PT-N24-UpperBounds-09
FORMULA_NAME LastZero-PT-N24-UpperBounds-10
FORMULA_NAME LastZero-PT-N24-UpperBounds-11
FORMULA_NAME LastZero-PT-N24-UpperBounds-12
FORMULA_NAME LastZero-PT-N24-UpperBounds-13
FORMULA_NAME LastZero-PT-N24-UpperBounds-14
FORMULA_NAME LastZero-PT-N24-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1781614890723

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=LastZero-PT-N24
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-06-16 13:01:32] [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]
[2026-06-16 13:01:32] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-06-16 13:01:32] [INFO ] Load time of PNML (sax parser for PT used): 365 ms
[2026-06-16 13:01:32] [INFO ] Transformed 1300 places.
[2026-06-16 13:01:32] [INFO ] Transformed 16777 transitions.
[2026-06-16 13:01:32] [INFO ] Parsed PT model containing 1300 places and 16777 transitions and 51483 arcs in 524 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 8 ms.
Deduced a syphon composed of 626 places in 83 ms
Reduce places removed 626 places and 10977 transitions.
Reduce places removed 1 places and 0 transitions.
FORMULA LastZero-PT-N24-UpperBounds-00 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N24-UpperBounds-09 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N24-UpperBounds-11 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA LastZero-PT-N24-UpperBounds-14 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-06-16 13:01:32] [INFO ] Flow matrix only has 5524 transitions (discarded 276 similar events)
// Phase 1: matrix 5524 rows 673 cols
[2026-06-16 13:01:32] [INFO ] Computed 25 invariants in 64 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, 1, +inf, +inf, 1, 1, +inf, +inf, 1, 1, +inf, 1]
RANDOM walk for 10000 steps (136 resets) in 101 ms. (98 steps per ms)
BEST_FIRST walk for 120009 steps (134 resets) in 192 ms. (621 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0] Max Struct:[+inf, 1, +inf, +inf, 1, 1, +inf, +inf, 1, 1, +inf, 1]
[2026-06-16 13:01:33] [INFO ] Flow matrix only has 5524 transitions (discarded 276 similar events)
[2026-06-16 13:01:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:33] [INFO ] [Real]Absence check using 25 positive place invariants in 14 ms returned sat
[2026-06-16 13:01:34] [INFO ] [Real]Absence check using state equation in 905 ms returned sat
[2026-06-16 13:01:34] [INFO ] State equation strengthened by 600 read => feed constraints.
[2026-06-16 13:01:34] [INFO ] [Real]Added 600 Read/Feed constraints in 133 ms returned sat
[2026-06-16 13:01:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:34] [INFO ] [Nat]Absence check using 25 positive place invariants in 12 ms returned sat
[2026-06-16 13:01:35] [INFO ] [Nat]Absence check using state equation in 822 ms returned sat
[2026-06-16 13:01:35] [INFO ] [Nat]Added 600 Read/Feed constraints in 94 ms returned sat
[2026-06-16 13:01:36] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 387 ms.
[2026-06-16 13:01:37] [INFO ] Added : 6 causal constraints over 2 iterations in 1067 ms. Result :sat
Minimization took 502 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:37] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:38] [INFO ] [Real]Absence check using state equation in 749 ms returned sat
[2026-06-16 13:01:38] [INFO ] [Real]Added 600 Read/Feed constraints in 94 ms returned sat
[2026-06-16 13:01:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:38] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:39] [INFO ] [Nat]Absence check using state equation in 801 ms returned sat
[2026-06-16 13:01:39] [INFO ] [Nat]Added 600 Read/Feed constraints in 111 ms returned sat
[2026-06-16 13:01:40] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 384 ms.
[2026-06-16 13:01:40] [INFO ] Added : 9 causal constraints over 2 iterations in 992 ms. Result :sat
Minimization took 514 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:41] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:42] [INFO ] [Real]Absence check using state equation in 761 ms returned sat
[2026-06-16 13:01:42] [INFO ] [Real]Added 600 Read/Feed constraints in 107 ms returned sat
[2026-06-16 13:01:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:42] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:43] [INFO ] [Nat]Absence check using state equation in 771 ms returned sat
[2026-06-16 13:01:43] [INFO ] [Nat]Added 600 Read/Feed constraints in 107 ms returned sat
[2026-06-16 13:01:44] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 382 ms.
[2026-06-16 13:01:44] [INFO ] Added : 11 causal constraints over 3 iterations in 1106 ms. Result :sat
Minimization took 528 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:45] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:46] [INFO ] [Real]Absence check using state equation in 658 ms returned unsat
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:46] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:01:46] [INFO ] [Real]Absence check using state equation in 801 ms returned sat
[2026-06-16 13:01:47] [INFO ] [Real]Added 600 Read/Feed constraints in 88 ms returned sat
[2026-06-16 13:01:47] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:47] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:48] [INFO ] [Nat]Absence check using state equation in 763 ms returned sat
[2026-06-16 13:01:48] [INFO ] [Nat]Added 600 Read/Feed constraints in 82 ms returned sat
[2026-06-16 13:01:48] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 304 ms.
[2026-06-16 13:01:49] [INFO ] Added : 16 causal constraints over 4 iterations in 1208 ms. Result :sat
Minimization took 509 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:50] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:50] [INFO ] [Real]Absence check using state equation in 739 ms returned sat
[2026-06-16 13:01:51] [INFO ] [Real]Added 600 Read/Feed constraints in 111 ms returned sat
[2026-06-16 13:01:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:51] [INFO ] [Nat]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:01:51] [INFO ] [Nat]Absence check using state equation in 685 ms returned sat
[2026-06-16 13:01:51] [INFO ] [Nat]Added 600 Read/Feed constraints in 102 ms returned sat
[2026-06-16 13:01:52] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 258 ms.
[2026-06-16 13:01:53] [INFO ] Added : 22 causal constraints over 5 iterations in 1405 ms. Result :sat
Minimization took 501 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:54] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:01:54] [INFO ] [Real]Absence check using state equation in 715 ms returned sat
[2026-06-16 13:01:55] [INFO ] [Real]Added 600 Read/Feed constraints in 96 ms returned sat
[2026-06-16 13:01:55] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:55] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:01:55] [INFO ] [Nat]Absence check using state equation in 689 ms returned sat
[2026-06-16 13:01:55] [INFO ] [Nat]Added 600 Read/Feed constraints in 101 ms returned sat
[2026-06-16 13:01:56] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 241 ms.
[2026-06-16 13:01:57] [INFO ] Added : 19 causal constraints over 4 iterations in 1145 ms. Result :sat
Minimization took 503 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:57] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:01:58] [INFO ] [Real]Absence check using state equation in 617 ms returned unsat
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:58] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:01:59] [INFO ] [Real]Absence check using state equation in 763 ms returned sat
[2026-06-16 13:01:59] [INFO ] [Real]Added 600 Read/Feed constraints in 91 ms returned sat
[2026-06-16 13:01:59] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:01:59] [INFO ] [Nat]Absence check using 25 positive place invariants in 10 ms returned sat
[2026-06-16 13:02:00] [INFO ] [Nat]Absence check using state equation in 671 ms returned sat
[2026-06-16 13:02:00] [INFO ] [Nat]Added 600 Read/Feed constraints in 93 ms returned sat
[2026-06-16 13:02:00] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 292 ms.
[2026-06-16 13:02:01] [INFO ] Added : 22 causal constraints over 5 iterations in 1444 ms. Result :sat
Minimization took 506 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:02:02] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:02:03] [INFO ] [Real]Absence check using state equation in 768 ms returned sat
[2026-06-16 13:02:03] [INFO ] [Real]Added 600 Read/Feed constraints in 99 ms returned sat
[2026-06-16 13:02:03] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:02:03] [INFO ] [Nat]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:04] [INFO ] [Nat]Absence check using state equation in 691 ms returned sat
[2026-06-16 13:02:04] [INFO ] [Nat]Added 600 Read/Feed constraints in 107 ms returned sat
[2026-06-16 13:02:04] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 276 ms.
[2026-06-16 13:02:05] [INFO ] Added : 7 causal constraints over 2 iterations in 826 ms. Result :sat
Minimization took 502 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:02:06] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:06] [INFO ] [Real]Absence check using state equation in 721 ms returned sat
[2026-06-16 13:02:06] [INFO ] [Real]Added 600 Read/Feed constraints in 108 ms returned sat
[2026-06-16 13:02:07] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:02:07] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:02:07] [INFO ] [Nat]Absence check using state equation in 760 ms returned sat
[2026-06-16 13:02:07] [INFO ] [Nat]Added 600 Read/Feed constraints in 89 ms returned sat
[2026-06-16 13:02:08] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 286 ms.
[2026-06-16 13:02:09] [INFO ] Added : 23 causal constraints over 5 iterations in 1242 ms. Result :sat
Minimization took 505 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:02:09] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:10] [INFO ] [Real]Absence check using state equation in 751 ms returned sat
[2026-06-16 13:02:10] [INFO ] [Real]Added 600 Read/Feed constraints in 88 ms returned sat
[2026-06-16 13:02:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-06-16 13:02:11] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 13:02:11] [INFO ] [Nat]Absence check using state equation in 731 ms returned sat
[2026-06-16 13:02:11] [INFO ] [Nat]Added 600 Read/Feed constraints in 86 ms returned sat
[2026-06-16 13:02:12] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 253 ms.
[2026-06-16 13:02:12] [INFO ] Added : 7 causal constraints over 2 iterations in 810 ms. Result :sat
Minimization took 508 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0] Max Struct:[+inf, 1, +inf, 1, 1, 1, +inf, 1, 1, 1, +inf, 1]
FORMULA LastZero-PT-N24-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N24-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, 1, +inf, 1, 1, +inf, 1, 1, +inf, 1]
Support contains 10 out of 673 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 673/673 places, 5800/5800 transitions.
Graph (complete) has 6123 edges and 673 vertex of which 648 are kept as prefixes of interest. Removing 25 places using SCC suffix rule.10 ms
Discarding 25 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 300 transitions
Reduce isomorphic transitions removed 300 transitions.
Iterating post reduction 0 with 300 rules applied. Total rules applied 301 place count 648 transition count 5500
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 1 Pre rules applied. Total rules applied 301 place count 648 transition count 5499
Deduced a syphon composed of 1 places in 5 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 1 with 2 rules applied. Total rules applied 303 place count 647 transition count 5499
Applied a total of 303 rules in 165 ms. Remains 647 /673 variables (removed 26) and now considering 5499/5800 (removed 301) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 178 ms. Remains : 647/673 places, 5499/5800 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
// Phase 1: matrix 5499 rows 647 cols
[2026-06-16 13:02:14] [INFO ] Computed 24 invariants in 20 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, 1, +inf, 1, 1, +inf, 1, 1, +inf, 1]
RANDOM walk for 1000000 steps (20833 resets) in 4697 ms. (212 steps per ms)
FORMULA LastZero-PT-N24-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA LastZero-PT-N24-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 8000008 steps (10513 resets) in 6818 ms. (1173 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, 1, +inf, 1, 1, +inf, 1, +inf]
[2026-06-16 13:02:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:25] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:02:26] [INFO ] [Real]Absence check using state equation in 711 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:26] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:27] [INFO ] [Real]Absence check using state equation in 659 ms returned sat
[2026-06-16 13:02:27] [INFO ] State equation strengthened by 576 read => feed constraints.
[2026-06-16 13:02:27] [INFO ] [Real]Added 576 Read/Feed constraints in 81 ms returned sat
[2026-06-16 13:02:27] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:27] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:28] [INFO ] [Nat]Absence check using state equation in 679 ms returned sat
[2026-06-16 13:02:28] [INFO ] [Nat]Added 576 Read/Feed constraints in 91 ms returned sat
[2026-06-16 13:02:28] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 242 ms.
[2026-06-16 13:02:29] [INFO ] Added : 9 causal constraints over 2 iterations in 781 ms. Result :sat
Minimization took 560 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:30] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:30] [INFO ] [Real]Absence check using state equation in 731 ms returned sat
[2026-06-16 13:02:31] [INFO ] [Real]Added 576 Read/Feed constraints in 74 ms returned sat
[2026-06-16 13:02:31] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:31] [INFO ] [Nat]Absence check using 24 positive place invariants in 9 ms returned sat
[2026-06-16 13:02:32] [INFO ] [Nat]Absence check using state equation in 726 ms returned sat
[2026-06-16 13:02:32] [INFO ] [Nat]Added 576 Read/Feed constraints in 68 ms returned sat
[2026-06-16 13:02:32] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 251 ms.
[2026-06-16 13:02:33] [INFO ] Added : 11 causal constraints over 3 iterations in 917 ms. Result :sat
Minimization took 533 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:33] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:02:34] [INFO ] [Real]Absence check using state equation in 712 ms returned sat
[2026-06-16 13:02:34] [INFO ] [Real]Added 576 Read/Feed constraints in 69 ms returned sat
[2026-06-16 13:02:34] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:34] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:35] [INFO ] [Nat]Absence check using state equation in 632 ms returned sat
[2026-06-16 13:02:35] [INFO ] [Nat]Added 576 Read/Feed constraints in 73 ms returned sat
[2026-06-16 13:02:35] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 223 ms.
[2026-06-16 13:02:36] [INFO ] Added : 16 causal constraints over 4 iterations in 1046 ms. Result :sat
Minimization took 521 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:37] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:02:38] [INFO ] [Real]Absence check using state equation in 642 ms returned sat
[2026-06-16 13:02:38] [INFO ] [Real]Added 576 Read/Feed constraints in 70 ms returned sat
[2026-06-16 13:02:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:38] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:39] [INFO ] [Nat]Absence check using state equation in 643 ms returned sat
[2026-06-16 13:02:39] [INFO ] [Nat]Added 576 Read/Feed constraints in 70 ms returned sat
[2026-06-16 13:02:39] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 233 ms.
[2026-06-16 13:02:40] [INFO ] Added : 22 causal constraints over 5 iterations in 1166 ms. Result :sat
Minimization took 508 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:41] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:02:41] [INFO ] [Real]Absence check using state equation in 648 ms returned sat
[2026-06-16 13:02:41] [INFO ] [Real]Added 576 Read/Feed constraints in 72 ms returned sat
[2026-06-16 13:02:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:42] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:42] [INFO ] [Nat]Absence check using state equation in 652 ms returned sat
[2026-06-16 13:02:42] [INFO ] [Nat]Added 576 Read/Feed constraints in 78 ms returned sat
[2026-06-16 13:02:43] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 261 ms.
[2026-06-16 13:02:43] [INFO ] Added : 19 causal constraints over 4 iterations in 1084 ms. Result :sat
Minimization took 542 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:44] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:02:45] [INFO ] [Real]Absence check using state equation in 719 ms returned sat
[2026-06-16 13:02:45] [INFO ] [Real]Added 576 Read/Feed constraints in 76 ms returned sat
[2026-06-16 13:02:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:45] [INFO ] [Nat]Absence check using 24 positive place invariants in 11 ms returned sat
[2026-06-16 13:02:46] [INFO ] [Nat]Absence check using state equation in 705 ms returned sat
[2026-06-16 13:02:46] [INFO ] [Nat]Added 576 Read/Feed constraints in 75 ms returned sat
[2026-06-16 13:02:46] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 229 ms.
[2026-06-16 13:02:47] [INFO ] Added : 22 causal constraints over 5 iterations in 1184 ms. Result :sat
Minimization took 508 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:48] [INFO ] [Real]Absence check using 24 positive place invariants in 6 ms returned sat
[2026-06-16 13:02:49] [INFO ] [Real]Absence check using state equation in 653 ms returned sat
[2026-06-16 13:02:49] [INFO ] [Real]Added 576 Read/Feed constraints in 73 ms returned sat
[2026-06-16 13:02:49] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:02:49] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 13:02:50] [INFO ] [Nat]Absence check using state equation in 712 ms returned sat
[2026-06-16 13:02:50] [INFO ] [Nat]Added 576 Read/Feed constraints in 70 ms returned sat
[2026-06-16 13:02:50] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 272 ms.
[2026-06-16 13:02:51] [INFO ] Added : 22 causal constraints over 5 iterations in 1237 ms. Result :sat
Minimization took 503 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, +inf, 1, 1, +inf, 1, +inf]
FORMULA LastZero-PT-N24-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N24-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA LastZero-PT-N24-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA LastZero-PT-N24-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 1, 1, 1] Max Struct:[1, +inf, +inf, +inf]
Support contains 4 out of 647 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 647/647 places, 5499/5499 transitions.
Applied a total of 0 rules in 54 ms. Remains 647 /647 variables (removed 0) and now considering 5499/5499 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 54 ms. Remains : 647/647 places, 5499/5499 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
[2026-06-16 13:02:53] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1, 1, 1, 1] Max Struct:[1, +inf, +inf, +inf]
FORMULA LastZero-PT-N24-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000000 steps (20833 resets) in 5566 ms. (179 steps per ms)
BEST_FIRST walk for 3000003 steps (3939 resets) in 2740 ms. (1094 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 1, 1] Max Struct:[+inf, +inf, +inf]
[2026-06-16 13:03:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:03:01] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:03:02] [INFO ] [Real]Absence check using state equation in 605 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:03:02] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:03:02] [INFO ] [Real]Absence check using state equation in 629 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-06-16 13:03:03] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 13:03:03] [INFO ] [Real]Absence check using state equation in 630 ms returned unsat
Current structural bounds on expressions (after SMT) : Max Seen:[1, 1, 1] Max Struct:[1, 1, 1]
FORMULA LastZero-PT-N24-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N24-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N24-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 5 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2026-06-16 13:03:04] [INFO ] Flatten gal took : 323 ms
[2026-06-16 13:03:04] [INFO ] Flatten gal took : 157 ms
[2026-06-16 13:03:04] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14766444494482339437.gal : 63 ms
[2026-06-16 13:03:04] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1996926762581566937.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/ReachabilityCardinality14766444494482339437.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1996926762581566937.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:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 92352 ms.

BK_STOP 1781614984481

--------------------
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="LastZero-PT-N24"
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 LastZero-PT-N24, 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 r367-tall-178024404700019"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/LastZero-PT-N24.tgz
mv LastZero-PT-N24 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh

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