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.r354-tall-178024402800149.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 itstools
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 r354-tall-178024402800149
=====================================================================

--------------------
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 1781643642622

Invoking MCC driver with
BK_TOOL=itstools
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 202604301425
[2026-06-16 21:00:43] [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 21:00:43] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-06-16 21:00:44] [INFO ] Load time of PNML (sax parser for PT used): 356 ms
[2026-06-16 21:00:44] [INFO ] Transformed 1300 places.
[2026-06-16 21:00:44] [INFO ] Transformed 16777 transitions.
[2026-06-16 21:00:44] [INFO ] Parsed PT model containing 1300 places and 16777 transitions and 51483 arcs in 497 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 9 ms.
Deduced a syphon composed of 626 places in 74 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]
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-10969229026422813459.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-3505058922010190281.kers'
[2026-06-16 21:00:44] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-10969229026422813459.kers, --Pflows, --basisKERS=/tmp/petrispot-output-3505058922010190281.kers]
Normalized transition count is 5524 out of 5800 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 3 ms.
// Phase 1: matrix 5524 rows 672 cols 15647 entries
Finished phase 1 with 648 SingleSign rule and 0 generalized
[2026-06-16 21:00:44] [INFO ] Computed 25 invariants in 18 ms
Computed 25 P flows in 19 ms.
Exported basis to /tmp/petrispot-output-3505058922010190281.kers
Total runtime 23 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 89 ms. (111 steps per ms)
FORMULA LastZero-PT-N24-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA LastZero-PT-N24-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 100006 steps (112 resets) in 174 ms. (571 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 0, 0, 1, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, 1, +inf, +inf, 1, 1, +inf, +inf, 1, +inf]
[2026-06-16 21:00:44] [INFO ] Flow matrix only has 5524 transitions (discarded 276 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-15295603791403598096.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9429887981984614006.kers'
[2026-06-16 21:00:44] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-15295603791403598096.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9429887981984614006.kers]
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 1 ms.
// Phase 1: matrix 5524 rows 672 cols 15647 entries
Finished phase 1 with 648 SingleSign rule and 0 generalized
[2026-06-16 21:00:44] [INFO ] Computed 25 invariants in 15 ms
Computed 25 P flows in 15 ms.
Exported basis to /tmp/petrispot-output-9429887981984614006.kers
Total runtime 19 ms.
[2026-06-16 21:00:45] [INFO ] [Real]Absence check using 25 positive place invariants in 18 ms returned sat
[2026-06-16 21:00:45] [INFO ] [Real]Absence check using state equation in 791 ms returned unsat
[2026-06-16 21:00:46] [INFO ] [Real]Absence check using 25 positive place invariants in 10 ms returned sat
[2026-06-16 21:00:46] [INFO ] [Real]Absence check using state equation in 712 ms returned sat
[2026-06-16 21:00:47] [INFO ] State equation strengthened by 600 read => feed constraints.
[2026-06-16 21:00:47] [INFO ] [Real]Added 600 Read/Feed constraints in 93 ms returned sat
[2026-06-16 21:00:47] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:00:47] [INFO ] [Nat]Absence check using 25 positive place invariants in 13 ms returned sat
[2026-06-16 21:00:48] [INFO ] [Nat]Absence check using state equation in 825 ms returned sat
[2026-06-16 21:00:48] [INFO ] [Nat]Added 600 Read/Feed constraints in 101 ms returned sat
[2026-06-16 21:00:48] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 426 ms.
[2026-06-16 21:00:49] [INFO ] Added : 9 causal constraints over 2 iterations in 1130 ms. Result :sat
Minimization took 528 ms.
[2026-06-16 21:00:50] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:00:50] [INFO ] [Real]Absence check using state equation in 733 ms returned sat
[2026-06-16 21:00:51] [INFO ] [Real]Added 600 Read/Feed constraints in 99 ms returned sat
[2026-06-16 21:00:51] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:00:51] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:00:52] [INFO ] [Nat]Absence check using state equation in 719 ms returned sat
[2026-06-16 21:00:52] [INFO ] [Nat]Added 600 Read/Feed constraints in 111 ms returned sat
[2026-06-16 21:00:52] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 441 ms.
[2026-06-16 21:00:53] [INFO ] Added : 11 causal constraints over 3 iterations in 1195 ms. Result :sat
Minimization took 514 ms.
[2026-06-16 21:00:54] [INFO ] [Real]Absence check using 25 positive place invariants in 11 ms returned sat
[2026-06-16 21:00:54] [INFO ] [Real]Absence check using state equation in 590 ms returned unsat
[2026-06-16 21:00:54] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:00:55] [INFO ] [Real]Absence check using state equation in 699 ms returned sat
[2026-06-16 21:00:55] [INFO ] [Real]Added 600 Read/Feed constraints in 137 ms returned sat
[2026-06-16 21:00:55] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:00:55] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:00:56] [INFO ] [Nat]Absence check using state equation in 690 ms returned sat
[2026-06-16 21:00:56] [INFO ] [Nat]Added 600 Read/Feed constraints in 98 ms returned sat
[2026-06-16 21:00:57] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 361 ms.
[2026-06-16 21:00:58] [INFO ] Added : 16 causal constraints over 4 iterations in 1417 ms. Result :sat
Minimization took 502 ms.
[2026-06-16 21:00:58] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 21:00:59] [INFO ] [Real]Absence check using state equation in 690 ms returned sat
[2026-06-16 21:00:59] [INFO ] [Real]Added 600 Read/Feed constraints in 99 ms returned sat
[2026-06-16 21:00:59] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:00:59] [INFO ] [Nat]Absence check using 25 positive place invariants in 10 ms returned sat
[2026-06-16 21:01:00] [INFO ] [Nat]Absence check using state equation in 706 ms returned sat
[2026-06-16 21:01:00] [INFO ] [Nat]Added 600 Read/Feed constraints in 91 ms returned sat
[2026-06-16 21:01:01] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 250 ms.
[2026-06-16 21:01:02] [INFO ] Added : 22 causal constraints over 5 iterations in 1449 ms. Result :sat
Minimization took 501 ms.
[2026-06-16 21:01:02] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:03] [INFO ] [Real]Absence check using state equation in 727 ms returned sat
[2026-06-16 21:01:03] [INFO ] [Real]Added 600 Read/Feed constraints in 87 ms returned sat
[2026-06-16 21:01:03] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:03] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:04] [INFO ] [Nat]Absence check using state equation in 845 ms returned sat
[2026-06-16 21:01:04] [INFO ] [Nat]Added 600 Read/Feed constraints in 100 ms returned sat
[2026-06-16 21:01:05] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 335 ms.
[2026-06-16 21:01:06] [INFO ] Added : 19 causal constraints over 4 iterations in 1272 ms. Result :sat
Minimization took 501 ms.
[2026-06-16 21:01:06] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:07] [INFO ] [Real]Absence check using state equation in 858 ms returned sat
[2026-06-16 21:01:07] [INFO ] [Real]Added 600 Read/Feed constraints in 90 ms returned sat
[2026-06-16 21:01:08] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:08] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:08] [INFO ] [Nat]Absence check using state equation in 833 ms returned sat
[2026-06-16 21:01:09] [INFO ] [Nat]Added 600 Read/Feed constraints in 94 ms returned sat
[2026-06-16 21:01:09] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 305 ms.
[2026-06-16 21:01:09] [INFO ] Added : 3 causal constraints over 1 iterations in 740 ms. Result :sat
Minimization took 512 ms.
[2026-06-16 21:01:10] [INFO ] [Real]Absence check using 25 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:11] [INFO ] [Real]Absence check using state equation in 719 ms returned sat
[2026-06-16 21:01:11] [INFO ] [Real]Added 600 Read/Feed constraints in 94 ms returned sat
[2026-06-16 21:01:11] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:11] [INFO ] [Nat]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:12] [INFO ] [Nat]Absence check using state equation in 717 ms returned sat
[2026-06-16 21:01:12] [INFO ] [Nat]Added 600 Read/Feed constraints in 85 ms returned sat
[2026-06-16 21:01:12] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 240 ms.
[2026-06-16 21:01:13] [INFO ] Added : 22 causal constraints over 5 iterations in 1471 ms. Result :sat
Minimization took 518 ms.
[2026-06-16 21:01:14] [INFO ] [Real]Absence check using 25 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:15] [INFO ] [Real]Absence check using state equation in 774 ms returned sat
[2026-06-16 21:01:15] [INFO ] [Real]Added 600 Read/Feed constraints in 95 ms returned sat
[2026-06-16 21:01:15] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:15] [INFO ] [Nat]Absence check using 25 positive place invariants in 10 ms returned sat
[2026-06-16 21:01:16] [INFO ] [Nat]Absence check using state equation in 837 ms returned sat
[2026-06-16 21:01:16] [INFO ] [Nat]Added 600 Read/Feed constraints in 96 ms returned sat
[2026-06-16 21:01:17] [INFO ] Computed and/alt/rep : 552/2093/551 causal constraints (skipped 4949 transitions) in 297 ms.
[2026-06-16 21:01:18] [INFO ] Added : 23 causal constraints over 5 iterations in 1458 ms. Result :sat
Minimization took 521 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1, 0, 0, 1, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, +inf, 1, 1, 1, +inf, +inf, 1, +inf]
FORMULA LastZero-PT-N24-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA LastZero-PT-N24-UpperBounds-01 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] Max Struct:[1, +inf, 1, 1, +inf, +inf, 1, +inf]
Support contains 8 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.9 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 6 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 185 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 196 ms. Remains : 647/673 places, 5499/5800 transitions.
findPositiveTsemiflow completed in 415 ms - Net is bounded UNSAT
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-16589193176436277725.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-2601521719217443717.kers'
[2026-06-16 21:01:19] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-16589193176436277725.kers, --Pflows, --basisKERS=/tmp/petrispot-output-2601521719217443717.kers]
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 2 ms.
// Phase 1: matrix 5499 rows 646 cols 15597 entries
Finished phase 1 with 623 SingleSign rule and 0 generalized
[2026-06-16 21:01:19] [INFO ] Computed 24 invariants in 13 ms
Computed 24 P flows in 14 ms.
Exported basis to /tmp/petrispot-output-2601521719217443717.kers
Total runtime 17 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, +inf, 1, 1, +inf, +inf, 1, +inf]
RANDOM walk for 1000000 steps (20833 resets) in 5450 ms. (183 steps per ms)
BEST_FIRST walk for 8000007 steps (10508 resets) in 8149 ms. (981 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0, 0, 0, 0, 0, 1, 0, 0] Max Struct:[1, +inf, 1, 1, +inf, +inf, 1, +inf]
[2026-06-16 21:01:33] [INFO ] Invariant cache hit.
[2026-06-16 21:01:33] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:34] [INFO ] [Real]Absence check using state equation in 707 ms returned sat
[2026-06-16 21:01:34] [INFO ] State equation strengthened by 576 read => feed constraints.
[2026-06-16 21:01:34] [INFO ] [Real]Added 576 Read/Feed constraints in 86 ms returned sat
[2026-06-16 21:01:34] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:34] [INFO ] [Nat]Absence check using 24 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:35] [INFO ] [Nat]Absence check using state equation in 714 ms returned sat
[2026-06-16 21:01:35] [INFO ] [Nat]Added 576 Read/Feed constraints in 99 ms returned sat
[2026-06-16 21:01:35] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 282 ms.
[2026-06-16 21:01:36] [INFO ] Added : 9 causal constraints over 2 iterations in 814 ms. Result :sat
Minimization took 627 ms.
[2026-06-16 21:01:37] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:38] [INFO ] [Real]Absence check using state equation in 827 ms returned sat
[2026-06-16 21:01:38] [INFO ] [Real]Added 576 Read/Feed constraints in 78 ms returned sat
[2026-06-16 21:01:38] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:38] [INFO ] [Nat]Absence check using 24 positive place invariants in 10 ms returned sat
[2026-06-16 21:01:39] [INFO ] [Nat]Absence check using state equation in 826 ms returned sat
[2026-06-16 21:01:39] [INFO ] [Nat]Added 576 Read/Feed constraints in 86 ms returned sat
[2026-06-16 21:01:39] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 296 ms.
[2026-06-16 21:01:40] [INFO ] Added : 11 causal constraints over 3 iterations in 1042 ms. Result :sat
Minimization took 581 ms.
[2026-06-16 21:01:41] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:42] [INFO ] [Real]Absence check using state equation in 836 ms returned sat
[2026-06-16 21:01:42] [INFO ] [Real]Added 576 Read/Feed constraints in 77 ms returned sat
[2026-06-16 21:01:42] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:42] [INFO ] [Nat]Absence check using 24 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:43] [INFO ] [Nat]Absence check using state equation in 805 ms returned sat
[2026-06-16 21:01:43] [INFO ] [Nat]Added 576 Read/Feed constraints in 76 ms returned sat
[2026-06-16 21:01:43] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 269 ms.
[2026-06-16 21:01:44] [INFO ] Added : 16 causal constraints over 4 iterations in 1448 ms. Result :sat
Minimization took 578 ms.
[2026-06-16 21:01:45] [INFO ] [Real]Absence check using 24 positive place invariants in 7 ms returned sat
[2026-06-16 21:01:46] [INFO ] [Real]Absence check using state equation in 702 ms returned sat
[2026-06-16 21:01:46] [INFO ] [Real]Added 576 Read/Feed constraints in 79 ms returned sat
[2026-06-16 21:01:46] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:46] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:47] [INFO ] [Nat]Absence check using state equation in 752 ms returned sat
[2026-06-16 21:01:47] [INFO ] [Nat]Added 576 Read/Feed constraints in 94 ms returned sat
[2026-06-16 21:01:48] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 280 ms.
[2026-06-16 21:01:49] [INFO ] Added : 22 causal constraints over 5 iterations in 1366 ms. Result :sat
Minimization took 564 ms.
[2026-06-16 21:01:49] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:50] [INFO ] [Real]Absence check using state equation in 841 ms returned sat
[2026-06-16 21:01:50] [INFO ] [Real]Added 576 Read/Feed constraints in 71 ms returned sat
[2026-06-16 21:01:50] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:51] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:51] [INFO ] [Nat]Absence check using state equation in 709 ms returned sat
[2026-06-16 21:01:51] [INFO ] [Nat]Added 576 Read/Feed constraints in 76 ms returned sat
[2026-06-16 21:01:52] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 229 ms.
[2026-06-16 21:01:53] [INFO ] Added : 19 causal constraints over 4 iterations in 1095 ms. Result :sat
Minimization took 564 ms.
[2026-06-16 21:01:53] [INFO ] [Real]Absence check using 24 positive place invariants in 9 ms returned sat
[2026-06-16 21:01:54] [INFO ] [Real]Absence check using state equation in 626 ms returned unsat
[2026-06-16 21:01:54] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:55] [INFO ] [Real]Absence check using state equation in 699 ms returned sat
[2026-06-16 21:01:55] [INFO ] [Real]Added 576 Read/Feed constraints in 69 ms returned sat
[2026-06-16 21:01:55] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:55] [INFO ] [Nat]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:56] [INFO ] [Nat]Absence check using state equation in 669 ms returned sat
[2026-06-16 21:01:56] [INFO ] [Nat]Added 576 Read/Feed constraints in 78 ms returned sat
[2026-06-16 21:01:56] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 232 ms.
[2026-06-16 21:01:57] [INFO ] Added : 22 causal constraints over 5 iterations in 1389 ms. Result :sat
Minimization took 577 ms.
[2026-06-16 21:01:58] [INFO ] [Real]Absence check using 24 positive place invariants in 8 ms returned sat
[2026-06-16 21:01:59] [INFO ] [Real]Absence check using state equation in 728 ms returned sat
[2026-06-16 21:01:59] [INFO ] [Real]Added 576 Read/Feed constraints in 74 ms returned sat
[2026-06-16 21:01:59] [INFO ] Solution in real domain found non-integer solution.
[2026-06-16 21:01:59] [INFO ] [Nat]Absence check using 24 positive place invariants in 9 ms returned sat
[2026-06-16 21:02:00] [INFO ] [Nat]Absence check using state equation in 679 ms returned sat
[2026-06-16 21:02:00] [INFO ] [Nat]Added 576 Read/Feed constraints in 79 ms returned sat
[2026-06-16 21:02:00] [INFO ] Computed and/alt/rep : 548/2083/548 causal constraints (skipped 4927 transitions) in 239 ms.
[2026-06-16 21:02:01] [INFO ] Added : 22 causal constraints over 5 iterations in 1233 ms. Result :sat
Minimization took 556 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0, 0, 0, 0, 0, 1, 0, 0] Max Struct:[1, +inf, 1, 1, +inf, 1, 1, +inf]
FORMULA LastZero-PT-N24-UpperBounds-08 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]
FORMULA LastZero-PT-N24-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL PARIKH_GUIDED_WALK
Support contains 3 out of 647 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 647/647 places, 5499/5499 transitions.
Graph (complete) has 5798 edges and 647 vertex of which 549 are kept as prefixes of interest. Removing 98 places using SCC suffix rule.3 ms
Discarding 98 places :
Also discarding 1176 output transitions
Drop transitions (Output transitions of discarded places.) removed 1176 transitions
Drop transitions (Empty/Sink Transition effects.) removed 23 transitions
Reduce isomorphic transitions removed 23 transitions.
Iterating post reduction 0 with 23 rules applied. Total rules applied 24 place count 549 transition count 4300
Applied a total of 24 rules in 73 ms. Remains 549 /647 variables (removed 98) and now considering 4300/5499 (removed 1199) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 73 ms. Remains : 549/647 places, 4300/5499 transitions.
findPositiveTsemiflow completed in 264 ms - Net is bounded UNSAT
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-18030793593190980835.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-15605846975347829915.kers'
[2026-06-16 21:02:03] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-18030793593190980835.kers, --Pflows, --basisKERS=/tmp/petrispot-output-15605846975347829915.kers]
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 3 ms.
// Phase 1: matrix 4300 rows 548 cols 12141 entries
Finished phase 1 with 527 SingleSign rule and 0 generalized
[2026-06-16 21:02:03] [INFO ] Computed 22 invariants in 17 ms
Computed 22 P flows in 18 ms.
Exported basis to /tmp/petrispot-output-15605846975347829915.kers
Total runtime 27 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[1, 1, 1] Max Struct:[+inf, +inf, +inf]
RANDOM walk for 1000000 steps (22727 resets) in 4316 ms. (231 steps per ms)
BEST_FIRST walk for 3000003 steps (4668 resets) in 2668 ms. (1124 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 1, 1] Max Struct:[+inf, +inf, +inf]
[2026-06-16 21:02:10] [INFO ] Invariant cache hit.
[2026-06-16 21:02:10] [INFO ] [Real]Absence check using 22 positive place invariants in 7 ms returned sat
[2026-06-16 21:02:10] [INFO ] [Real]Absence check using state equation in 540 ms returned unsat
[2026-06-16 21:02:11] [INFO ] [Real]Absence check using 22 positive place invariants in 7 ms returned sat
[2026-06-16 21:02:11] [INFO ] [Real]Absence check using state equation in 562 ms returned unsat
[2026-06-16 21:02:11] [INFO ] [Real]Absence check using 22 positive place invariants in 8 ms returned sat
[2026-06-16 21:02:12] [INFO ] [Real]Absence check using state equation in 552 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:[]
All properties solved without resorting to model-checking.
Total runtime 88517 ms.

BK_STOP 1781643732319

--------------------
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_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /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="itstools"
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 itstools"
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 r354-tall-178024402800149"
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 ;