MCC'2026- Execution of r130-smll-177955809100365

About the Execution of ITS-Tools for FlexibleBarrier-PT-10b

Execution Summary
Max Memory Used (MB)	Time wait (ms)	CPU Usage (ms)	I/O Wait (ms)	Computed Result	Execution Status
474.060	92786.00	115641.00	482.50	1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1	normal

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.r130-smll-177955809100365.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 FlexibleBarrier-PT-10b, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r130-smll-177955809100365
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 804K
-rw-r--r-- 1 mcc users 7.6K Mar 7 06:45 CTLCardinality.txt
-rw-r--r-- 1 mcc users 84K Mar 7 06:45 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K Mar 7 06:45 CTLFireability.txt
-rw-r--r-- 1 mcc users 57K Mar 7 06:45 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.5K Mar 15 10:12 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Mar 15 10:12 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 10:12 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 10:12 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.3K Mar 7 06:45 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 91K Mar 7 06:45 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.4K Mar 7 06:45 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 71K Mar 7 06:45 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:12 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 10:12 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 374K 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 FlexibleBarrier-PT-10b-UpperBounds-00
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-01
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-02
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-03
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-04
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-05
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-06
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-07
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-08
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-09
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-10
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-11
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-12
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-13
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-14
FORMULA_NAME FlexibleBarrier-PT-10b-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779887309912

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FlexibleBarrier-PT-10b
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202604301425
[2026-05-27 13:08:32] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-27 13:08:32] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-27 13:08:33] [INFO ] Load time of PNML (sax parser for PT used): 330 ms
[2026-05-27 13:08:33] [INFO ] Transformed 1402 places.
[2026-05-27 13:08:33] [INFO ] Transformed 1613 transitions.
[2026-05-27 13:08:33] [INFO ] Found NUPN structural information;
[2026-05-27 13:08:33] [INFO ] Parsed PT model containing 1402 places and 1613 transitions and 4025 arcs in 577 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 24 ms.
Current structural bounds on expressions (Initiallly, because the net is safe) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-14718814053859631694.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-14382685861437131858.kers'
[2026-05-27 13:08:33] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-14718814053859631694.kers, --Pflows, --basisKERS=/tmp/petrispot-output-14382685861437131858.kers]
Culled 0 columns in 2 ms.
// Phase 1: matrix 1613 rows 1402 cols 4025 entries
Finished phase 1 with 1390 SingleSign rule and 0 generalized
[2026-05-27 13:08:33] [INFO ] Computed 12 invariants in 15 ms
Computed 12 P flows in 17 ms.
Exported basis to /tmp/petrispot-output-14382685861437131858.kers
Total runtime 23 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
RANDOM walk for 10000 steps (134 resets) in 121 ms. (81 steps per ms)
FORMULA FlexibleBarrier-PT-10b-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 110009 steps (160 resets) in 226 ms. (484 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2026-05-27 13:08:33] [INFO ] Invariant cache hit.
[2026-05-27 13:08:35] [INFO ] [Real]Absence check using 12 positive place invariants in 81 ms returned sat
[2026-05-27 13:08:36] [INFO ] [Real]Absence check using state equation in 1306 ms returned sat
[2026-05-27 13:08:37] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 306 ms.
[2026-05-27 13:08:37] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:08:38] [INFO ] [Nat]Absence check using 12 positive place invariants in 80 ms returned sat
[2026-05-27 13:08:39] [INFO ] [Nat]Absence check using state equation in 1200 ms returned sat
[2026-05-27 13:08:40] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 223 ms.
Maximisation of solution failed !
Minimization took 2 ms.
[2026-05-27 13:08:43] [INFO ] [Real]Absence check using 12 positive place invariants in 69 ms returned sat
[2026-05-27 13:08:44] [INFO ] [Real]Absence check using state equation in 1108 ms returned sat
[2026-05-27 13:08:45] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:08:46] [INFO ] [Nat]Absence check using 12 positive place invariants in 73 ms returned sat
[2026-05-27 13:08:47] [INFO ] [Nat]Absence check using state equation in 1085 ms returned sat
[2026-05-27 13:08:48] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 999 ms
[2026-05-27 13:08:48] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 243 ms.
Maximisation of solution failed !
Minimization took 1 ms.
[2026-05-27 13:08:50] [INFO ] [Real]Absence check using 12 positive place invariants in 68 ms returned sat
[2026-05-27 13:08:52] [INFO ] [Real]Absence check using state equation in 1066 ms returned sat
[2026-05-27 13:08:52] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:08:53] [INFO ] [Nat]Absence check using 12 positive place invariants in 73 ms returned sat
[2026-05-27 13:08:54] [INFO ] [Nat]Absence check using state equation in 1107 ms returned sat
[2026-05-27 13:08:58] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close... while checking expression at index 2
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:308)
at fr.lip6.move.gal.structural.smt.SMTTrapUtils.refineWithTraps(SMTTrapUtils.java:177)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:874)
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)
[2026-05-27 13:08:59] [INFO ] [Real]Absence check using 12 positive place invariants in 68 ms returned sat
[2026-05-27 13:09:00] [INFO ] [Real]Absence check using state equation in 1281 ms returned sat
[2026-05-27 13:09:00] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 198 ms.
[2026-05-27 13:09:01] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:01] [INFO ] [Nat]Absence check using 12 positive place invariants in 69 ms returned sat
[2026-05-27 13:09:02] [INFO ] [Nat]Absence check using state equation in 994 ms returned sat
[2026-05-27 13:09:04] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 1701 ms
[2026-05-27 13:09:04] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 136 ms.
Maximisation of solution failed !
Minimization took 0 ms.
[2026-05-27 13:09:06] [INFO ] [Real]Absence check using 12 positive place invariants in 69 ms returned sat
[2026-05-27 13:09:07] [INFO ] [Real]Absence check using state equation in 1103 ms returned sat
[2026-05-27 13:09:08] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 174 ms.
[2026-05-27 13:09:08] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:09] [INFO ] [Nat]Absence check using 12 positive place invariants in 72 ms returned sat
[2026-05-27 13:09:10] [INFO ] [Nat]Absence check using state equation in 1006 ms returned sat
[2026-05-27 13:09:10] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 184 ms.
Maximisation of solution failed !
Minimization took 0 ms.
[2026-05-27 13:09:14] [INFO ] [Real]Absence check using 12 positive place invariants in 67 ms returned sat
[2026-05-27 13:09:15] [INFO ] [Real]Absence check using state equation in 1055 ms returned sat
[2026-05-27 13:09:15] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 186 ms.
[2026-05-27 13:09:16] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:17] [INFO ] [Nat]Absence check using 12 positive place invariants in 74 ms returned sat
[2026-05-27 13:09:17] [INFO ] [Nat]Absence check using state equation in 993 ms returned sat
[2026-05-27 13:09:18] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 156 ms.
Maximisation of solution failed !
Minimization took 0 ms.
[2026-05-27 13:09:22] [INFO ] [Real]Absence check using 12 positive place invariants in 65 ms returned sat
[2026-05-27 13:09:23] [INFO ] [Real]Absence check using state equation in 953 ms returned sat
[2026-05-27 13:09:23] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 173 ms.
[2026-05-27 13:09:23] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:24] [INFO ] [Nat]Absence check using 12 positive place invariants in 72 ms returned sat
[2026-05-27 13:09:25] [INFO ] [Nat]Absence check using state equation in 1134 ms returned sat
[2026-05-27 13:09:25] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 182 ms.
[2026-05-27 13:09:28] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close... while checking expression at index 6
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:308)
at fr.lip6.move.gal.structural.smt.DeadlockTester.refineWithCausalOrder(DeadlockTester.java:1143)
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)
[2026-05-27 13:09:29] [INFO ] [Real]Absence check using 12 positive place invariants in 68 ms returned sat
[2026-05-27 13:09:30] [INFO ] [Real]Absence check using state equation in 1180 ms returned sat
[2026-05-27 13:09:31] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:31] [INFO ] [Nat]Absence check using 12 positive place invariants in 73 ms returned sat
[2026-05-27 13:09:33] [INFO ] [Nat]Absence check using state equation in 1178 ms returned sat
[2026-05-27 13:09:33] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 573 ms
[2026-05-27 13:09:33] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 195 ms.
[2026-05-27 13:09:36] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Timeout of Z3 solver reached")... while checking expression at index 7
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Timeout of Z3 solver reached")...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:308)
at fr.lip6.move.gal.structural.smt.DeadlockTester.refineWithCausalOrder(DeadlockTester.java:1143)
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)
[2026-05-27 13:09:36] [INFO ] [Real]Absence check using 12 positive place invariants in 67 ms returned sat
[2026-05-27 13:09:38] [INFO ] [Real]Absence check using state equation in 1195 ms returned sat
[2026-05-27 13:09:40] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:40] [INFO ] [Nat]Absence check using 12 positive place invariants in 71 ms returned sat
[2026-05-27 13:09:41] [INFO ] [Nat]Absence check using state equation in 1066 ms returned sat
[2026-05-27 13:09:43] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 1905 ms
[2026-05-27 13:09:44] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 175 ms.
Maximisation of solution failed !
Minimization took 1 ms.
[2026-05-27 13:09:46] [INFO ] [Real]Absence check using 12 positive place invariants in 67 ms returned sat
[2026-05-27 13:09:47] [INFO ] [Real]Absence check using state equation in 1022 ms returned sat
[2026-05-27 13:09:47] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 187 ms.
[2026-05-27 13:09:47] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:48] [INFO ] [Nat]Absence check using 12 positive place invariants in 77 ms returned sat
[2026-05-27 13:09:49] [INFO ] [Nat]Absence check using state equation in 1015 ms returned sat
[2026-05-27 13:09:49] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 131 ms.
Maximisation of solution failed !
Minimization took 0 ms.
[2026-05-27 13:09:53] [INFO ] [Real]Absence check using 12 positive place invariants in 67 ms returned sat
[2026-05-27 13:09:54] [INFO ] [Real]Absence check using state equation in 1135 ms returned sat
[2026-05-27 13:09:55] [INFO ] Solution in real domain found non-integer solution.
[2026-05-27 13:09:55] [INFO ] [Nat]Absence check using 12 positive place invariants in 67 ms returned sat
[2026-05-27 13:09:56] [INFO ] [Nat]Absence check using state equation in 1033 ms returned sat
[2026-05-27 13:09:57] [INFO ] Computed and/alt/rep : 1475/2377/1475 causal constraints (skipped 137 transitions) in 193 ms.
Maximisation of solution failed !
Minimization took 0 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
Support contains 11 out of 1402 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 1402/1402 places, 1613/1613 transitions.
Graph (trivial) has 1353 edges and 1402 vertex of which 62 / 1402 are part of one of the 10 SCC in 26 ms
Free SCC test removed 52 places
Drop transitions (Empty/Sink Transition effects.) removed 63 transitions
Reduce isomorphic transitions removed 63 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 352 transitions
Trivial Post-agglo rules discarded 352 transitions
Performed 352 trivial Post agglomeration. Transition count delta: 352
Iterating post reduction 0 with 352 rules applied. Total rules applied 353 place count 1350 transition count 1198
Reduce places removed 352 places and 0 transitions.
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Iterating post reduction 1 with 355 rules applied. Total rules applied 708 place count 998 transition count 1195
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 2 with 3 rules applied. Total rules applied 711 place count 995 transition count 1195
Performed 87 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 87 Pre rules applied. Total rules applied 711 place count 995 transition count 1108
Deduced a syphon composed of 87 places in 4 ms
Reduce places removed 87 places and 0 transitions.
Iterating global reduction 3 with 174 rules applied. Total rules applied 885 place count 908 transition count 1108
Discarding 504 places :
Symmetric choice reduction at 3 with 504 rule applications. Total rules 1389 place count 404 transition count 604
Iterating global reduction 3 with 504 rules applied. Total rules applied 1893 place count 404 transition count 604
Performed 9 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 9 Pre rules applied. Total rules applied 1893 place count 404 transition count 595
Deduced a syphon composed of 9 places in 2 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 3 with 18 rules applied. Total rules applied 1911 place count 395 transition count 595
Discarding 77 places :
Symmetric choice reduction at 3 with 77 rule applications. Total rules 1988 place count 318 transition count 518
Iterating global reduction 3 with 77 rules applied. Total rules applied 2065 place count 318 transition count 518
Ensure Unique test removed 75 transitions
Reduce isomorphic transitions removed 75 transitions.
Iterating post reduction 3 with 75 rules applied. Total rules applied 2140 place count 318 transition count 443
Performed 51 Post agglomeration using F-continuation condition.Transition count delta: 51
Deduced a syphon composed of 51 places in 1 ms
Reduce places removed 51 places and 0 transitions.
Iterating global reduction 4 with 102 rules applied. Total rules applied 2242 place count 267 transition count 392
Drop transitions (Empty/Sink Transition effects.) removed 20 transitions
Reduce isomorphic transitions removed 20 transitions.
Iterating post reduction 4 with 20 rules applied. Total rules applied 2262 place count 267 transition count 372
Discarding 9 places :
Symmetric choice reduction at 5 with 9 rule applications. Total rules 2271 place count 258 transition count 363
Iterating global reduction 5 with 9 rules applied. Total rules applied 2280 place count 258 transition count 363
Free-agglomeration rule applied 188 times.
Iterating global reduction 5 with 188 rules applied. Total rules applied 2468 place count 258 transition count 175
Reduce places removed 188 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 78 transitions
Reduce isomorphic transitions removed 78 transitions.
Graph (complete) has 187 edges and 70 vertex of which 65 are kept as prefixes of interest. Removing 5 places using SCC suffix rule.1 ms
Discarding 5 places :
Also discarding 0 output transitions
Iterating post reduction 5 with 267 rules applied. Total rules applied 2735 place count 65 transition count 97
Drop transitions (Empty/Sink Transition effects.) removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 6 with 7 rules applied. Total rules applied 2742 place count 65 transition count 90
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 7 with 1 rules applied. Total rules applied 2743 place count 65 transition count 89
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 7 with 1 rules applied. Total rules applied 2744 place count 65 transition count 89
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 7 with 1 rules applied. Total rules applied 2745 place count 64 transition count 88
Discarding 1 places :
Also discarding 1 output transitions
Drop transitions (Output transitions of discarded places.) removed 1 transitions
Remove reverse transitions (loop back) rule discarded transition t2.t3.t4.t1394.t996.t997 and 1 places that fell out of Prefix Of Interest.
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Graph (trivial) has 43 edges and 62 vertex of which 16 / 62 are part of one of the 8 SCC in 1 ms
Free SCC test removed 8 places
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 7 with 4 rules applied. Total rules applied 2749 place count 54 transition count 85
Reduce places removed 1 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 8 with 17 rules applied. Total rules applied 2766 place count 53 transition count 69
Performed 9 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 9 with 9 Pre rules applied. Total rules applied 2766 place count 53 transition count 60
Deduced a syphon composed of 9 places in 0 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 9 with 18 rules applied. Total rules applied 2784 place count 44 transition count 60
Drop transitions (Empty/Sink Transition effects.) removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 9 with 8 rules applied. Total rules applied 2792 place count 44 transition count 52
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 10 with 1 Pre rules applied. Total rules applied 2792 place count 44 transition count 51
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 10 with 2 rules applied. Total rules applied 2794 place count 43 transition count 51
Performed 7 Post agglomeration using F-continuation condition.Transition count delta: 7
Deduced a syphon composed of 7 places in 0 ms
Reduce places removed 7 places and 0 transitions.
Iterating global reduction 10 with 14 rules applied. Total rules applied 2808 place count 36 transition count 44
Free-agglomeration rule applied 7 times.
Iterating global reduction 10 with 7 rules applied. Total rules applied 2815 place count 36 transition count 37
Reduce places removed 12 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 10 with 19 rules applied. Total rules applied 2834 place count 24 transition count 30
Free-agglomeration rule applied 2 times.
Iterating global reduction 11 with 2 rules applied. Total rules applied 2836 place count 24 transition count 28
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 11 with 2 rules applied. Total rules applied 2838 place count 22 transition count 28
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 12 with 1 rules applied. Total rules applied 2839 place count 22 transition count 27
Reduce places removed 1 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 12 with 2 rules applied. Total rules applied 2841 place count 21 transition count 26
Applied a total of 2841 rules in 572 ms. Remains 21 /1402 variables (removed 1381) and now considering 26/1613 (removed 1587) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 588 ms. Remains : 21/1402 places, 26/1613 transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-9680858899191279975.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-15863492920258167588.kers'
[2026-05-27 13:10:00] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-9680858899191279975.kers, --Pflows, --basisKERS=/tmp/petrispot-output-15863492920258167588.kers]
Culling duplicate invariants (modulo rational): removing 2 columns.
Culled 2 columns in 0 ms.
// Phase 1: matrix 26 rows 19 cols 50 entries
Finished phase 1 with 16 SingleSign rule and 0 generalized
[2026-05-27 13:10:00] [INFO ] Computed 5 invariants in 0 ms
Computed 5 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-15863492920258167588.kers
Total runtime 1 ms.
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
RANDOM walk for 1000000 steps (2 resets) in 1479 ms. (675 steps per ms)
FORMULA FlexibleBarrier-PT-10b-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FlexibleBarrier-PT-10b-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 1000001 steps (2 resets) in 344 ms. (2898 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 90093 ms.

BK_STOP 1779887402698

--------------------
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="FlexibleBarrier-PT-10b"
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 FlexibleBarrier-PT-10b, 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 r130-smll-177955809100365"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FlexibleBarrier-PT-10b.tgz
mv FlexibleBarrier-PT-10b 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 ;