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.r194-tall-177969914300677.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool itstools
Input is Peterson-COL-5, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r194-tall-177969914300677
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 504K
-rw-r--r-- 1 mcc users 9.0K Mar 8 07:05 CTLCardinality.txt
-rw-r--r-- 1 mcc users 91K Mar 8 07:05 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.6K Mar 8 07:04 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K Mar 8 07:04 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.1K Mar 16 08:29 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 16 08:29 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 16 08:29 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 16 08:29 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Mar 8 07:05 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 108K Mar 8 07:05 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.7K Mar 8 07:05 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 76K Mar 8 07:05 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 16 08:29 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 16 08:29 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_pt
-rw-r--r-- 1 mcc users 2 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 45K 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 Peterson-COL-5-UpperBounds-00
FORMULA_NAME Peterson-COL-5-UpperBounds-01
FORMULA_NAME Peterson-COL-5-UpperBounds-02
FORMULA_NAME Peterson-COL-5-UpperBounds-03
FORMULA_NAME Peterson-COL-5-UpperBounds-04
FORMULA_NAME Peterson-COL-5-UpperBounds-05
FORMULA_NAME Peterson-COL-5-UpperBounds-06
FORMULA_NAME Peterson-COL-5-UpperBounds-07
FORMULA_NAME Peterson-COL-5-UpperBounds-08
FORMULA_NAME Peterson-COL-5-UpperBounds-09
FORMULA_NAME Peterson-COL-5-UpperBounds-10
FORMULA_NAME Peterson-COL-5-UpperBounds-11
FORMULA_NAME Peterson-COL-5-UpperBounds-12
FORMULA_NAME Peterson-COL-5-UpperBounds-13
FORMULA_NAME Peterson-COL-5-UpperBounds-14
FORMULA_NAME Peterson-COL-5-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779810594392

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Peterson-COL-5
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is COL
UpperBounds COL
Running Version 202604301425
[2026-05-26 15:49:56] [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]
[2026-05-26 15:49:56] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-26 15:49:56] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2026-05-26 15:49:56] [WARNING] Using fallBack plugin, rng conformance not checked
[2026-05-26 15:49:56] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 525 ms
[2026-05-26 15:49:56] [INFO ] Imported 11 HL places and 14 HL transitions for a total of 864 PT places and 1398.0 transition bindings in 19 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 6 ms.
Reduction of identical properties reduced properties to check from 16 to 9
[2026-05-26 15:49:56] [INFO ] Built PT skeleton of HLPN with 11 places and 14 transitions 42 arcs in 4 ms.
[2026-05-26 15:49:56] [INFO ] Skeletonized 9 HLPN properties in 0 ms.
Reduce places removed 2 places and 0 transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-17783172214968054943.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-528888501504313556.kers'
[2026-05-26 15:49:56] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-17783172214968054943.kers, --Pflows, --basisKERS=/tmp/petrispot-output-528888501504313556.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 14 rows 9 cols 28 entries
Finished phase 1 with 8 SingleSign rule and 0 generalized
[2026-05-26 15:49:56] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-528888501504313556.kers
Total runtime 1 ms.
Current structural bounds on expressions (after Invariants on skeleton) : Max Seen:[0, 0, 0, 0, 0, 0, 5, 6, 0] Max Struct:[6, 6, 6, 6, 6, 6, 5, 6, 6]
FORMULA Peterson-COL-5-UpperBounds-13 6 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA Peterson-COL-5-UpperBounds-10 6 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA Peterson-COL-5-UpperBounds-15 5 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA Peterson-COL-5-UpperBounds-09 5 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
[2026-05-26 15:49:56] [INFO ] Invariant cache hit.
[2026-05-26 15:49:56] [INFO ] [Real]Absence check using 1 positive place invariants in 3 ms returned sat
[2026-05-26 15:49:56] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2026-05-26 15:49:56] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-26 15:49:56] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:56] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-26 15:49:56] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-26 15:49:57] [INFO ] Added : 12 causal constraints over 4 iterations in 16 ms. Result :sat
Minimization took 6 ms.
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-26 15:49:57] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using state equation in 6 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-26 15:49:57] [INFO ] Added : 11 causal constraints over 3 iterations in 35 ms. Result :sat
Minimization took 9 ms.
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-26 15:49:57] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-26 15:49:57] [INFO ] Added : 11 causal constraints over 4 iterations in 19 ms. Result :sat
Minimization took 4 ms.
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-26 15:49:57] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-26 15:49:57] [INFO ] Added : 11 causal constraints over 3 iterations in 9 ms. Result :sat
Minimization took 3 ms.
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-26 15:49:57] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-26 15:49:57] [INFO ] Added : 11 causal constraints over 4 iterations in 11 ms. Result :sat
Minimization took 4 ms.
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using state equation in 9 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-26 15:49:57] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using state equation in 5 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-26 15:49:57] [INFO ] Added : 11 causal constraints over 5 iterations in 13 ms. Result :sat
Minimization took 4 ms.
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-26 15:49:57] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-26 15:49:57] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2026-05-26 15:49:57] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-26 15:49:57] [INFO ] Added : 11 causal constraints over 3 iterations in 9 ms. Result :sat
Minimization took 4 ms.
Current structural bounds on expressions (after SMT on skeleton) : Max Seen:[0, 0, 0, 0, 0, 0, 0] Max Struct:[6, 6, 6, 6, 6, 6, 6]
Domain [Process(6), Tour(5), Process(6)] of place BeginLoop breaks symmetries in sort Process
Arc [2:1*[$i, (MOD (ADD $j 1) 5)]] contains successor/predecessor on variables of sort Tour
Symmetric sort wr.t. initial and guards and successors and join/free detected :Bool
Arc [1:1*[$i, 0]] contains constants of sort Bool
Transition Ask : constants on arcs in [[1:1*[$i, 0]]] introduces in Bool(2) partition with 1 elements that refines current partition to 2 subsets.
[2026-05-26 15:49:57] [INFO ] Unfolded HLPN to a Petri net with 864 places and 1302 transitions 4068 arcs in 45 ms.
[2026-05-26 15:49:57] [INFO ] Unfolded 7 HLPN properties in 0 ms.
Deduced a syphon composed of 30 places in 10 ms
Reduce places removed 30 places and 60 transitions.
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0, 0, 0, 0, 0, 0, 0] Max Struct:[6, 6, 6, 6, 6, 6, 6]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0] Max Struct:[6, 6, 6, 6, 6, 6, 6]
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-17793758637032860527.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9194536625493790651.kers'
[2026-05-26 15:49:57] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-17793758637032860527.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9194536625493790651.kers]
Normalized transition count is 1122 out of 1242 initially.
Culling duplicate invariants (modulo rational): removing 12 columns.
Culled 12 columns in 0 ms.
// Phase 1: matrix 1122 rows 822 cols 2544 entries
Finished phase 1 with 811 SingleSign rule and 0 generalized
[2026-05-26 15:49:57] [INFO ] Computed 23 invariants in 4 ms
Computed 23 P flows in 7 ms.
Exported basis to /tmp/petrispot-output-9194536625493790651.kers
Total runtime 7 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0] Max Struct:[6, 6, 6, 6, 6, 6, 6]
RANDOM walk for 10000 steps (2 resets) in 147 ms. (67 steps per ms)
FORMULA Peterson-COL-5-UpperBounds-11 6 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-5-UpperBounds-08 6 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-5-UpperBounds-06 6 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-5-UpperBounds-07 6 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-5-UpperBounds-02 6 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-5-UpperBounds-03 6 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 30003 steps (6 resets) in 119 ms. (250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 3, 4] Max Struct:[6, 6, 6]
[2026-05-26 15:49:57] [INFO ] Flow matrix only has 1122 transitions (discarded 120 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-17204031906764258358.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-5633992064147485929.kers'
[2026-05-26 15:49:57] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-17204031906764258358.kers, --Pflows, --basisKERS=/tmp/petrispot-output-5633992064147485929.kers]
Culling duplicate invariants (modulo rational): removing 12 columns.
Culled 12 columns in 0 ms.
// Phase 1: matrix 1122 rows 822 cols 2544 entries
Finished phase 1 with 811 SingleSign rule and 0 generalized
[2026-05-26 15:49:57] [INFO ] Computed 23 invariants in 4 ms
Computed 23 P flows in 5 ms.
Exported basis to /tmp/petrispot-output-5633992064147485929.kers
Total runtime 5 ms.
[2026-05-26 15:49:58] [INFO ] [Real]Absence check using 17 positive place invariants in 13 ms returned sat
[2026-05-26 15:49:58] [INFO ] [Real]Absence check using 17 positive and 6 generalized place invariants in 1 ms returned sat
[2026-05-26 15:49:58] [INFO ] [Real]Absence check using state equation in 289 ms returned sat
[2026-05-26 15:49:58] [INFO ] State equation strengthened by 205 read => feed constraints.
[2026-05-26 15:49:58] [INFO ] [Real]Added 205 Read/Feed constraints in 40 ms returned sat
[2026-05-26 15:49:58] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:49:58] [INFO ] [Nat]Absence check using 17 positive place invariants in 13 ms returned sat
[2026-05-26 15:49:58] [INFO ] [Nat]Absence check using 17 positive and 6 generalized place invariants in 2 ms returned sat
[2026-05-26 15:49:59] [INFO ] [Nat]Absence check using state equation in 288 ms returned sat
[2026-05-26 15:49:59] [INFO ] [Nat]Added 205 Read/Feed constraints in 349 ms returned sat
[2026-05-26 15:50:03] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Error writing to Z3 solver: java.io.IOException: Stream closed... while checking expression at index 0
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Error writing to Z3 solver: java.io.IOException: Stream closed...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:308)
at fr.lip6.move.gal.structural.smt.DeadlockTester.refineWithCausalOrder(DeadlockTester.java:960)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:881)
at fr.lip6.move.gal.structural.smt.DeadlockTester.findStructuralMaxWithSMT(DeadlockTester.java:2280)
at fr.lip6.move.gal.application.solver.UpperBoundsSolver.applyReductions(UpperBoundsSolver.java:207)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:803)
at fr.lip6.move.gal.application.Application.start(Application.java:195)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:44)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:615)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:563)
at org.eclipse.equinox.launcher.Main.run(Main.java:1415)
at org.eclipse.equinox.launcher.Main.main(Main.java:1387)
[2026-05-26 15:50:03] [INFO ] [Real]Absence check using 17 positive place invariants in 13 ms returned sat
[2026-05-26 15:50:03] [INFO ] [Real]Absence check using 17 positive and 6 generalized place invariants in 1 ms returned sat
[2026-05-26 15:50:04] [INFO ] [Real]Absence check using state equation in 258 ms returned sat
[2026-05-26 15:50:04] [INFO ] [Real]Added 205 Read/Feed constraints in 31 ms returned sat
[2026-05-26 15:50:04] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:50:04] [INFO ] [Nat]Absence check using 17 positive place invariants in 14 ms returned sat
[2026-05-26 15:50:04] [INFO ] [Nat]Absence check using 17 positive and 6 generalized place invariants in 1 ms returned sat
[2026-05-26 15:50:04] [INFO ] [Nat]Absence check using state equation in 253 ms returned sat
[2026-05-26 15:50:04] [INFO ] [Nat]Added 205 Read/Feed constraints in 98 ms returned sat
[2026-05-26 15:50:04] [INFO ] Computed and/alt/rep : 1056/1992/1056 causal constraints (skipped 60 transitions) in 49 ms.
[2026-05-26 15:50:08] [INFO ] Added : 182 causal constraints over 37 iterations in 3626 ms. Result :sat
Minimization took 502 ms.
[2026-05-26 15:50:08] [INFO ] [Real]Absence check using 17 positive place invariants in 14 ms returned sat
[2026-05-26 15:50:08] [INFO ] [Real]Absence check using 17 positive and 6 generalized place invariants in 5 ms returned sat
[2026-05-26 15:50:09] [INFO ] [Real]Absence check using state equation in 302 ms returned sat
[2026-05-26 15:50:09] [INFO ] [Real]Added 205 Read/Feed constraints in 103 ms returned sat
[2026-05-26 15:50:09] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:50:09] [INFO ] [Nat]Absence check using 17 positive place invariants in 15 ms returned sat
[2026-05-26 15:50:09] [INFO ] [Nat]Absence check using 17 positive and 6 generalized place invariants in 2 ms returned sat
[2026-05-26 15:50:09] [INFO ] [Nat]Absence check using state equation in 270 ms returned sat
[2026-05-26 15:50:09] [INFO ] [Nat]Added 205 Read/Feed constraints in 199 ms returned sat
[2026-05-26 15:50:13] [INFO ] Trap strengthening (SAT) tested/added 13/12 trap constraints in 3838 ms
[2026-05-26 15:50:13] [INFO ] Computed and/alt/rep : 1056/1992/1056 causal constraints (skipped 60 transitions) in 56 ms.
[2026-05-26 15:50:14] [INFO ] Added : 25 causal constraints over 5 iterations in 595 ms. Result :unknown
Current structural bounds on expressions (after SMT) : Max Seen:[1, 3, 4] Max Struct:[6, 6, 6]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 4, 4] Max Struct:[6, 6, 6]
Support contains 216 out of 834 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 834/834 places, 1242/1242 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 150 transitions
Trivial Post-agglo rules discarded 150 transitions
Performed 150 trivial Post agglomeration. Transition count delta: 150
Iterating post reduction 0 with 150 rules applied. Total rules applied 150 place count 834 transition count 1092
Reduce places removed 150 places and 0 transitions.
Performed 150 Post agglomeration using F-continuation condition.Transition count delta: 150
Iterating post reduction 1 with 300 rules applied. Total rules applied 450 place count 684 transition count 942
Reduce places removed 150 places and 0 transitions.
Iterating post reduction 2 with 150 rules applied. Total rules applied 600 place count 534 transition count 942
Performed 30 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 30 Pre rules applied. Total rules applied 600 place count 534 transition count 912
Deduced a syphon composed of 30 places in 1 ms
Reduce places removed 30 places and 0 transitions.
Iterating global reduction 3 with 60 rules applied. Total rules applied 660 place count 504 transition count 912
Applied a total of 660 rules in 124 ms. Remains 504 /834 variables (removed 330) and now considering 912/1242 (removed 330) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 131 ms. Remains : 504/834 places, 912/1242 transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-15302845207468586269.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-141516904427339624.kers'
[2026-05-26 15:50:15] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-15302845207468586269.kers, --Pflows, --basisKERS=/tmp/petrispot-output-141516904427339624.kers]
Normalized transition count is 792 out of 912 initially.
Culling duplicate invariants (modulo rational): removing 12 columns.
Culled 12 columns in 0 ms.
// Phase 1: matrix 792 rows 492 cols 1884 entries
Finished phase 1 with 481 SingleSign rule and 0 generalized
[2026-05-26 15:50:15] [INFO ] Computed 23 invariants in 2 ms
Computed 23 P flows in 3 ms.
Exported basis to /tmp/petrispot-output-141516904427339624.kers
Total runtime 4 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[1, 4, 4] Max Struct:[6, 6, 6]
RANDOM walk for 1000000 steps (2 resets) in 3974 ms. (251 steps per ms)
BEST_FIRST walk for 3000003 steps (6 resets) in 4617 ms. (649 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 5, 5] Max Struct:[6, 6, 6]
[2026-05-26 15:50:23] [INFO ] Flow matrix only has 792 transitions (discarded 120 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-8015701208169023287.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-17697684676335999089.kers'
[2026-05-26 15:50:23] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-8015701208169023287.kers, --Pflows, --basisKERS=/tmp/petrispot-output-17697684676335999089.kers]
Culling duplicate invariants (modulo rational): removing 12 columns.
Culled 12 columns in 0 ms.
// Phase 1: matrix 792 rows 492 cols 1884 entries
Finished phase 1 with 481 SingleSign rule and 0 generalized
[2026-05-26 15:50:23] [INFO ] Computed 23 invariants in 2 ms
Computed 23 P flows in 2 ms.
Exported basis to /tmp/petrispot-output-17697684676335999089.kers
Total runtime 4 ms.
[2026-05-26 15:50:23] [INFO ] [Real]Absence check using 17 positive place invariants in 7 ms returned sat
[2026-05-26 15:50:23] [INFO ] [Real]Absence check using 17 positive and 6 generalized place invariants in 2 ms returned sat
[2026-05-26 15:50:23] [INFO ] [Real]Absence check using state equation in 169 ms returned sat
[2026-05-26 15:50:23] [INFO ] State equation strengthened by 205 read => feed constraints.
[2026-05-26 15:50:23] [INFO ] [Real]Added 205 Read/Feed constraints in 31 ms returned sat
[2026-05-26 15:50:23] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:50:24] [INFO ] [Nat]Absence check using 17 positive place invariants in 9 ms returned sat
[2026-05-26 15:50:24] [INFO ] [Nat]Absence check using 17 positive and 6 generalized place invariants in 2 ms returned sat
[2026-05-26 15:50:24] [INFO ] [Nat]Absence check using state equation in 195 ms returned sat
[2026-05-26 15:50:24] [INFO ] [Nat]Added 205 Read/Feed constraints in 125 ms returned sat
[2026-05-26 15:51:08] [INFO ] Trap strengthening (SAT) tested/added 113/113 trap constraints in 44599 ms
[2026-05-26 15:51:09] [INFO ] [Real]Absence check using 17 positive place invariants in 10 ms returned sat
[2026-05-26 15:51:09] [INFO ] [Real]Absence check using 17 positive and 6 generalized place invariants in 1 ms returned sat
[2026-05-26 15:51:09] [INFO ] [Real]Absence check using state equation in 164 ms returned sat
[2026-05-26 15:51:09] [INFO ] [Real]Added 205 Read/Feed constraints in 36 ms returned sat
[2026-05-26 15:51:09] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:51:09] [INFO ] [Nat]Absence check using 17 positive place invariants in 10 ms returned sat
[2026-05-26 15:51:09] [INFO ] [Nat]Absence check using 17 positive and 6 generalized place invariants in 1 ms returned sat
[2026-05-26 15:51:09] [INFO ] [Nat]Absence check using state equation in 166 ms returned sat
[2026-05-26 15:51:09] [INFO ] [Nat]Added 205 Read/Feed constraints in 59 ms returned sat
[2026-05-26 15:51:09] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 219 ms
[2026-05-26 15:51:09] [INFO ] Computed and/alt/rep : 726/1662/726 causal constraints (skipped 60 transitions) in 42 ms.
[2026-05-26 15:51:12] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 1076 ms
[2026-05-26 15:51:12] [INFO ] Added : 118 causal constraints over 25 iterations in 2495 ms. Result :sat
Minimization took 238 ms.
[2026-05-26 15:51:12] [INFO ] [Real]Absence check using 17 positive place invariants in 8 ms returned sat
[2026-05-26 15:51:12] [INFO ] [Real]Absence check using 17 positive and 6 generalized place invariants in 2 ms returned sat
[2026-05-26 15:51:12] [INFO ] [Real]Absence check using state equation in 169 ms returned sat
[2026-05-26 15:51:12] [INFO ] [Real]Added 205 Read/Feed constraints in 30 ms returned sat
[2026-05-26 15:51:12] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:51:12] [INFO ] [Nat]Absence check using 17 positive place invariants in 8 ms returned sat
[2026-05-26 15:51:12] [INFO ] [Nat]Absence check using 17 positive and 6 generalized place invariants in 2 ms returned sat
[2026-05-26 15:51:13] [INFO ] [Nat]Absence check using state equation in 165 ms returned sat
[2026-05-26 15:51:13] [INFO ] [Nat]Added 205 Read/Feed constraints in 76 ms returned sat
[2026-05-26 15:51:14] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 6 trap constraints in 1056 ms
Current structural bounds on expressions (after SMT) : Max Seen:[1, 5, 5] Max Struct:[6, 6, 5]
FORMULA Peterson-COL-5-UpperBounds-05 5 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 6] Max Struct:[6, 6]
FORMULA Peterson-COL-5-UpperBounds-14 6 TECHNIQUES TOPOLOGICAL PARIKH_GUIDED_WALK
FORMULA Peterson-COL-5-UpperBounds-04 6 TECHNIQUES TOPOLOGICAL PARIKH_GUIDED_WALK
Support contains 6 out of 504 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 504/504 places, 912/912 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 55 transitions
Trivial Post-agglo rules discarded 55 transitions
Performed 55 trivial Post agglomeration. Transition count delta: 55
Iterating post reduction 0 with 55 rules applied. Total rules applied 55 place count 504 transition count 857
Reduce places removed 55 places and 0 transitions.
Iterating post reduction 1 with 55 rules applied. Total rules applied 110 place count 449 transition count 857
Performed 149 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 149 Pre rules applied. Total rules applied 110 place count 449 transition count 708
Deduced a syphon composed of 149 places in 1 ms
Reduce places removed 149 places and 0 transitions.
Iterating global reduction 2 with 298 rules applied. Total rules applied 408 place count 300 transition count 708
Performed 30 Post agglomeration using F-continuation condition.Transition count delta: 30
Deduced a syphon composed of 30 places in 1 ms
Reduce places removed 30 places and 0 transitions.
Iterating global reduction 2 with 60 rules applied. Total rules applied 468 place count 270 transition count 678
Applied a total of 468 rules in 63 ms. Remains 270 /504 variables (removed 234) and now considering 678/912 (removed 234) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 63 ms. Remains : 270/504 places, 678/912 transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-17124498092824912597.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-12552491358140183038.kers'
[2026-05-26 15:51:14] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-17124498092824912597.kers, --Pflows, --basisKERS=/tmp/petrispot-output-12552491358140183038.kers]
Normalized transition count is 558 out of 678 initially.
Culling duplicate invariants (modulo rational): removing 12 columns.
Culled 12 columns in 0 ms.
// Phase 1: matrix 558 rows 258 cols 1416 entries
Finished phase 1 with 247 SingleSign rule and 0 generalized
[2026-05-26 15:51:14] [INFO ] Computed 23 invariants in 1 ms
Computed 23 P flows in 5 ms.
Exported basis to /tmp/petrispot-output-12552491358140183038.kers
Total runtime 6 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[1] Max Struct:[6]
RANDOM walk for 1000000 steps (2 resets) in 1406 ms. (710 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 484 ms. (2061 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[6]
[2026-05-26 15:51:16] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-9049611323150250656.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-3216695855657749840.kers'
[2026-05-26 15:51:16] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-9049611323150250656.kers, --Pflows, --basisKERS=/tmp/petrispot-output-3216695855657749840.kers]
Culling duplicate invariants (modulo rational): removing 12 columns.
Culled 12 columns in 0 ms.
// Phase 1: matrix 558 rows 258 cols 1416 entries
Finished phase 1 with 247 SingleSign rule and 0 generalized
[2026-05-26 15:51:16] [INFO ] Computed 23 invariants in 1 ms
Computed 23 P flows in 2 ms.
Exported basis to /tmp/petrispot-output-3216695855657749840.kers
Total runtime 3 ms.
[2026-05-26 15:51:16] [INFO ] [Real]Absence check using 17 positive place invariants in 5 ms returned sat
[2026-05-26 15:51:16] [INFO ] [Real]Absence check using 17 positive and 6 generalized place invariants in 1 ms returned sat
[2026-05-26 15:51:16] [INFO ] [Real]Absence check using state equation in 97 ms returned sat
[2026-05-26 15:51:16] [INFO ] State equation strengthened by 205 read => feed constraints.
[2026-05-26 15:51:16] [INFO ] [Real]Added 205 Read/Feed constraints in 21 ms returned sat
[2026-05-26 15:51:16] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:51:16] [INFO ] [Nat]Absence check using 17 positive place invariants in 4 ms returned sat
[2026-05-26 15:51:16] [INFO ] [Nat]Absence check using 17 positive and 6 generalized place invariants in 1 ms returned sat
[2026-05-26 15:51:16] [INFO ] [Nat]Absence check using state equation in 90 ms returned sat
[2026-05-26 15:51:16] [INFO ] [Nat]Added 205 Read/Feed constraints in 38 ms returned sat
[2026-05-26 15:52:01] [INFO ] Trap strengthening (SAT) tested/added 119/119 trap constraints in 44822 ms
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[6]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[6]
Support contains 6 out of 270 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 270/270 places, 678/678 transitions.
Applied a total of 0 rules in 16 ms. Remains 270 /270 variables (removed 0) and now considering 678/678 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 270/270 places, 678/678 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 270/270 places, 678/678 transitions.
Applied a total of 0 rules in 21 ms. Remains 270 /270 variables (removed 0) and now considering 678/678 (removed 0) transitions.
[2026-05-26 15:52:01] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
[2026-05-26 15:52:01] [INFO ] Invariant cache hit.
[2026-05-26 15:52:02] [INFO ] Implicit Places using invariants in 218 ms returned [0, 1, 2, 3, 4, 5]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 220 ms to find 6 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 264/270 places, 678/678 transitions.
Applied a total of 0 rules in 12 ms. Remains 264 /264 variables (removed 0) and now considering 678/678 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 260 ms. Remains : 264/270 places, 678/678 transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-10013560964357391006.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-7540589997945945848.kers'
[2026-05-26 15:52:02] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-10013560964357391006.kers, --Pflows, --basisKERS=/tmp/petrispot-output-7540589997945945848.kers]
Normalized transition count is 558 out of 678 initially.
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 558 rows 258 cols 1416 entries
Finished phase 1 with 247 SingleSign rule and 0 generalized
[2026-05-26 15:52:02] [INFO ] Computed 17 invariants in 1 ms
Computed 17 P flows in 2 ms.
Exported basis to /tmp/petrispot-output-7540589997945945848.kers
Total runtime 2 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[1] Max Struct:[6]
RANDOM walk for 1000000 steps (2 resets) in 1436 ms. (695 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 491 ms. (2032 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[6]
[2026-05-26 15:52:04] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-2278766539647025995.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-3108868925672810217.kers'
[2026-05-26 15:52:04] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-2278766539647025995.kers, --Pflows, --basisKERS=/tmp/petrispot-output-3108868925672810217.kers]
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 1 ms.
// Phase 1: matrix 558 rows 258 cols 1416 entries
Finished phase 1 with 247 SingleSign rule and 0 generalized
[2026-05-26 15:52:04] [INFO ] Computed 17 invariants in 5 ms
Computed 17 P flows in 5 ms.
Exported basis to /tmp/petrispot-output-3108868925672810217.kers
Total runtime 7 ms.
[2026-05-26 15:52:04] [INFO ] [Real]Absence check using 17 positive place invariants in 5 ms returned sat
[2026-05-26 15:52:04] [INFO ] [Real]Absence check using state equation in 90 ms returned sat
[2026-05-26 15:52:04] [INFO ] State equation strengthened by 205 read => feed constraints.
[2026-05-26 15:52:04] [INFO ] [Real]Added 205 Read/Feed constraints in 19 ms returned sat
[2026-05-26 15:52:04] [INFO ] Solution in real domain found non-integer solution.
[2026-05-26 15:52:04] [INFO ] [Nat]Absence check using 17 positive place invariants in 4 ms returned sat
[2026-05-26 15:52:04] [INFO ] [Nat]Absence check using state equation in 93 ms returned sat
[2026-05-26 15:52:04] [INFO ] [Nat]Added 205 Read/Feed constraints in 42 ms returned sat
[2026-05-26 15:52:30] [INFO ] Trap strengthening (SAT) tested/added 118/118 trap constraints in 26293 ms
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[6]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1] Max Struct:[6]
Support contains 6 out of 264 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 264/264 places, 678/678 transitions.
Applied a total of 0 rules in 11 ms. Remains 264 /264 variables (removed 0) and now considering 678/678 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 264/264 places, 678/678 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 264/264 places, 678/678 transitions.
Applied a total of 0 rules in 11 ms. Remains 264 /264 variables (removed 0) and now considering 678/678 (removed 0) transitions.
[2026-05-26 15:52:30] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
[2026-05-26 15:52:30] [INFO ] Invariant cache hit.
[2026-05-26 15:52:31] [INFO ] Implicit Places using invariants in 192 ms returned []
[2026-05-26 15:52:31] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
[2026-05-26 15:52:31] [INFO ] Invariant cache hit.
[2026-05-26 15:52:31] [INFO ] State equation strengthened by 205 read => feed constraints.
[2026-05-26 15:52:31] [INFO ] Implicit Places using invariants and state equation in 694 ms returned []
Implicit Place search using SMT with State Equation took 888 ms to find 0 implicit places.
[2026-05-26 15:52:31] [INFO ] Redundant transitions in 40 ms returned []
Running 672 sub problems to find dead transitions.
[2026-05-26 15:52:32] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
[2026-05-26 15:52:32] [INFO ] Invariant cache hit.
[2026-05-26 15:52:32] [INFO ] State equation strengthened by 205 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/264 variables, 17/17 constraints. Problems are: Problem set: 0 solved, 672 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/264 variables, 20/37 constraints. Problems are: Problem set: 0 solved, 672 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/264 variables, 20/57 constraints. Problems are: Problem set: 0 solved, 672 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/264 variables, 20/77 constraints. Problems are: Problem set: 0 solved, 672 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/264 variables, 20/97 constraints. Problems are: Problem set: 0 solved, 672 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/264 variables, 20/117 constraints. Problems are: Problem set: 0 solved, 672 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/264 variables, 20/137 constraints. Problems are: Problem set: 0 solved, 672 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/264 variables, 20/157 constraints. Problems are: Problem set: 0 solved, 672 unsolved
SMT process timed out in 30190ms, After SMT, problems are : Problem set: 0 solved, 672 unsolved
Search for dead transitions found 0 dead transitions in 30201ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 32288 ms. Remains : 264/264 places, 678/678 transitions.
RANDOM walk for 40000 steps (8 resets) in 457 ms. (87 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 122 ms. (325 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 176 ms. (226 steps per ms) remains 2/2 properties
[2026-05-26 15:53:03] [INFO ] Flatten gal took : 169 ms
[2026-05-26 15:53:03] [INFO ] Flatten gal took : 91 ms
[2026-05-26 15:53:04] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14905221592020643097.gal : 829 ms
[2026-05-26 15:53:04] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15440497755472734293.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality14905221592020643097.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15440497755472734293.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
Loading property file /tmp/ReachabilityCardinality15440497755472734293.prop.
SDD proceeding with computation,2 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,2 properties remain. new max is 8
SDD size :3 after 4
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :4 after 14
SDD proceeding with computation,2 properties remain. new max is 32
SDD size :14 after 21
SDD proceeding with computation,2 properties remain. new max is 64
SDD size :21 after 31
SDD proceeding with computation,2 properties remain. new max is 128
SDD size :31 after 95
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :95 after 203
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :203 after 371
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :371 after 514
SDD proceeding with computation,2 properties remain. new max is 2048
SDD size :514 after 3274
SDD proceeding with computation,2 properties remain. new max is 4096
SDD size :3274 after 6391
Interrupted probabilistic random walk after 487508 steps, run timeout after 3001 ms. (steps per millisecond=162 ) properties seen :0 out of 2
Probabilistic random walk after 487508 steps, saw 72118 distinct states, run finished after 3003 ms. (steps per millisecond=162 ) properties seen :0
[2026-05-26 15:53:06] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
[2026-05-26 15:53:06] [INFO ] Invariant cache hit.
[2026-05-26 15:53:06] [INFO ] State equation strengthened by 205 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 222/228 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/228 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 6/234 variables, 6/12 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/234 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 558/792 variables, 234/246 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/792 variables, 205/451 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/792 variables, 0/451 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 30/822 variables, 30/481 constraints. Problems are: Problem set: 0 solved, 2 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/822 variables, 5/486 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/822 variables, 0/486 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (OVERLAPS) 0/822 variables, 0/486 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 822/822 variables, and 486 constraints, problems are : Problem set: 0 solved, 2 unsolved in 774 ms.
Refiners :[Positive P Invariants (semi-flows): 17/17 constraints, State Equation: 264/264 constraints, ReadFeed: 205/205 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 222/228 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/228 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 6/234 variables, 6/12 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/234 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 558/792 variables, 234/246 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/792 variables, 205/451 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/792 variables, 2/453 constraints. Problems are: Problem set: 0 solved, 2 unsolved
SDD proceeding with computation,2 properties remain. new max is 8192
SDD size :6391 after 10106
At refinement iteration 8 (INCLUDED_ONLY) 0/792 variables, 0/453 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (OVERLAPS) 30/822 variables, 30/483 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/822 variables, 5/488 constraints. Problems are: Problem set: 0 solved, 2 unsolved
Problem MAX0 is UNSAT
Problem MAX0 is UNSAT
At refinement iteration 11 (INCLUDED_ONLY) 0/822 variables, 20/508 constraints. Problems are: Problem set: 1 solved, 1 unsolved
Error getting values : (error "Timeout of Z3 solver reached")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 822/822 variables, and 527 constraints, problems are : Problem set: 1 solved, 1 unsolved in 5008 ms.
Refiners :[Positive P Invariants (semi-flows): 17/17 constraints, State Equation: 264/264 constraints, ReadFeed: 205/205 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 39/39 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 5797ms problems are : Problem set: 1 solved, 1 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 6 out of 264 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 264/264 places, 678/678 transitions.
Applied a total of 0 rules in 11 ms. Remains 264 /264 variables (removed 0) and now considering 678/678 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 264/264 places, 678/678 transitions.
RANDOM walk for 40000 steps (8 resets) in 353 ms. (112 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 120 ms. (330 steps per ms) remains 1/1 properties
SDD proceeding with computation,2 properties remain. new max is 16384
SDD size :10106 after 78015
Interrupted probabilistic random walk after 901796 steps, run timeout after 3001 ms. (steps per millisecond=300 ) properties seen :0 out of 1
Probabilistic random walk after 901796 steps, saw 131099 distinct states, run finished after 3001 ms. (steps per millisecond=300 ) properties seen :0
[2026-05-26 15:53:15] [INFO ] Flow matrix only has 558 transitions (discarded 120 similar events)
[2026-05-26 15:53:15] [INFO ] Invariant cache hit.
[2026-05-26 15:53:15] [INFO ] State equation strengthened by 205 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 222/228 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/228 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (OVERLAPS) 6/234 variables, 6/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/234 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 558/792 variables, 234/246 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/792 variables, 205/451 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/792 variables, 0/451 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 30/822 variables, 30/481 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/822 variables, 5/486 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/822 variables, 0/486 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/822 variables, 0/486 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 822/822 variables, and 486 constraints, problems are : Problem set: 0 solved, 1 unsolved in 213 ms.
Refiners :[Positive P Invariants (semi-flows): 17/17 constraints, State Equation: 264/264 constraints, ReadFeed: 205/205 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 222/228 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/228 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 6/234 variables, 6/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/234 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 558/792 variables, 234/246 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/792 variables, 205/451 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/792 variables, 1/452 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/792 variables, 0/452 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 30/822 variables, 30/482 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/822 variables, 5/487 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/822 variables, 20/507 constraints. Problems are: Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,2 properties remain. new max is 32768
SDD size :78015 after 152201
At refinement iteration 12 (INCLUDED_ONLY) 0/822 variables, 20/527 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/822 variables, 20/547 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/822 variables, 20/567 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/822 variables, 20/587 constraints. Problems are: Problem set: 0 solved, 1 unsolved
SDD proceeding with computation,2 properties remain. new max is 65536
SDD size :152201 after 226868
At refinement iteration 16 (INCLUDED_ONLY) 0/822 variables, 20/607 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem MIN0 is UNSAT
After SMT solving in domain Int declared 822/822 variables, and 616 constraints, problems are : Problem set: 1 solved, 0 unsolved in 22846 ms.
Refiners :[Positive P Invariants (semi-flows): 17/17 constraints, State Equation: 264/264 constraints, ReadFeed: 205/205 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 129/129 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 23065ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
FORMULA Peterson-COL-5-UpperBounds-01 1 TECHNIQUES REACHABILITY_MIN
FORMULA Peterson-COL-5-UpperBounds-12 1 TECHNIQUES REACHABILITY_MIN
FORMULA Peterson-COL-5-UpperBounds-00 1 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (after reachability check) : Max Seen:[] Max Struct:[]
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-17314109672827781111.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-2592772237385579034.kers'
[2026-05-26 15:53:38] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-17314109672827781111.kers, --Pflows, --basisKERS=/tmp/petrispot-output-2592772237385579034.kers]
Normalized transition count is 558 out of 678 initially.
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 558 rows 258 cols 1416 entries
Finished phase 1 with 247 SingleSign rule and 0 generalized
[2026-05-26 15:53:38] [INFO ] Computed 17 invariants in 4 ms
Computed 17 P flows in 5 ms.
Exported basis to /tmp/petrispot-output-2592772237385579034.kers
Total runtime 7 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[] Max Struct:[]
RANDOM walk for 1000000 steps (2 resets) in 1292 ms. (773 steps per ms)
BEST_FIRST walk for 0 steps (0 resets) in 0 ms. (0 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 223827 ms.

BK_STOP 1779810819889

--------------------
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="Peterson-COL-5"
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 Peterson-COL-5, 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 r194-tall-177969914300677"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Peterson-COL-5.tgz
mv Peterson-COL-5 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 ;