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.r207-tall-177969919700084.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 gold2025
Input is Peterson-COL-4, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r207-tall-177969919700084
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 500K
-rw-r--r-- 1 mcc users 8.2K Mar 8 07:12 CTLCardinality.txt
-rw-r--r-- 1 mcc users 83K Mar 8 07:12 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.2K Mar 8 07:11 CTLFireability.txt
-rw-r--r-- 1 mcc users 43K Mar 8 07:11 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.9K Mar 16 08:29 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K 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 15K Mar 8 07:12 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 146K Mar 8 07:12 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.3K Mar 8 07:12 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 52K Mar 8 07:12 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 44K 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-4-UpperBounds-00
FORMULA_NAME Peterson-COL-4-UpperBounds-01
FORMULA_NAME Peterson-COL-4-UpperBounds-02
FORMULA_NAME Peterson-COL-4-UpperBounds-03
FORMULA_NAME Peterson-COL-4-UpperBounds-04
FORMULA_NAME Peterson-COL-4-UpperBounds-05
FORMULA_NAME Peterson-COL-4-UpperBounds-06
FORMULA_NAME Peterson-COL-4-UpperBounds-07
FORMULA_NAME Peterson-COL-4-UpperBounds-08
FORMULA_NAME Peterson-COL-4-UpperBounds-09
FORMULA_NAME Peterson-COL-4-UpperBounds-10
FORMULA_NAME Peterson-COL-4-UpperBounds-11
FORMULA_NAME Peterson-COL-4-UpperBounds-12
FORMULA_NAME Peterson-COL-4-UpperBounds-13
FORMULA_NAME Peterson-COL-4-UpperBounds-14
FORMULA_NAME Peterson-COL-4-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779719736143

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Peterson-COL-4
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is COL
UpperBounds COL
Running Version 202505121319
[2026-05-25 14:35:37] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-25 14:35:37] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 14:35:37] [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.
[2026-05-25 14:35:37] [WARNING] Using fallBack plugin, rng conformance not checked
[2026-05-25 14:35:38] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 566 ms
[2026-05-25 14:35:38] [INFO ] Imported 11 HL places and 14 HL transitions for a total of 500 PT places and 795.0 transition bindings in 18 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 8
[2026-05-25 14:35:38] [INFO ] Built PT skeleton of HLPN with 11 places and 14 transitions 42 arcs in 4 ms.
[2026-05-25 14:35:38] [INFO ] Skeletonized 8 HLPN properties in 0 ms.
Reduce places removed 2 places and 0 transitions.
// Phase 1: matrix 14 rows 9 cols
[2026-05-25 14:35:38] [INFO ] Computed 1 invariants in 3 ms
Current structural bounds on expressions (after Invariants on skeleton) : Max Seen:[0, 0, 4, 0, 0, 0, 5, 0] Max Struct:[5, 5, 4, 5, 5, 5, 5, 5]
FORMULA Peterson-COL-4-UpperBounds-09 5 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA Peterson-COL-4-UpperBounds-07 5 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA Peterson-COL-4-UpperBounds-12 4 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
FORMULA Peterson-COL-4-UpperBounds-02 4 TECHNIQUES TOPOLOGICAL CPN_APPROX INITIAL_STATE
[2026-05-25 14:35:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using 1 positive place invariants in 4 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using state equation in 16 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 4 ms.
[2026-05-25 14:35:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:35:38] [INFO ] Added : 12 causal constraints over 4 iterations in 19 ms. Result :sat
Minimization took 5 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:35:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using state equation in 7 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:35:38] [INFO ] Added : 11 causal constraints over 5 iterations in 15 ms. Result :sat
Minimization took 8 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:35:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 0 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:35:38] [INFO ] Added : 11 causal constraints over 4 iterations in 13 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 3 ms.
[2026-05-25 14:35:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:35:38] [INFO ] Added : 11 causal constraints over 5 iterations in 11 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using state equation in 5 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:35:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:35:38] [INFO ] Added : 11 causal constraints over 3 iterations in 14 ms. Result :sat
Minimization took 4 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 1 ms.
[2026-05-25 14:35:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-25 14:35:38] [INFO ] [Nat]Absence check using state equation in 4 ms returned sat
[2026-05-25 14:35:38] [INFO ] Computed and/alt/rep : 13/21/13 causal constraints (skipped 0 transitions) in 2 ms.
[2026-05-25 14:35:38] [INFO ] Added : 11 causal constraints over 4 iterations in 12 ms. Result :sat
Minimization took 4 ms.
Current structural bounds on expressions (after SMT on skeleton) : Max Seen:[0, 0, 0, 0, 0, 0] Max Struct:[5, 5, 5, 5, 5, 5]
Domain [Process(5), Tour(4), Process(5)] of place BeginLoop breaks symmetries in sort Process
Arc [2:1*[$i, (MOD (ADD $j 1) 4)]] contains successor/predecessor on variables of sort Tour
Symmetric sort wr.t. initial and guards and successors and join/free detected :Bool
Arc [1:1*[$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.
[2026-05-25 14:35:39] [INFO ] Unfolded HLPN to a Petri net with 500 places and 730 transitions 2280 arcs in 33 ms.
[2026-05-25 14:35:39] [INFO ] Unfolded 6 HLPN properties in 0 ms.
Deduced a syphon composed of 20 places in 5 ms
Reduce places removed 20 places and 40 transitions.
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0] Max Struct:[+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] Max Struct:[5, 5, 5, 5, 5, 5]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0] Max Struct:[5, 5, 5, 5, 5, 5]
[2026-05-25 14:35:39] [INFO ] Flow matrix only has 630 transitions (discarded 60 similar events)
// Phase 1: matrix 630 rows 480 cols
[2026-05-25 14:35:39] [INFO ] Computed 19 invariants in 10 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0] Max Struct:[5, 5, 5, 5, 5, 5]
RANDOM walk for 10000 steps (2 resets) in 65 ms. (151 steps per ms)
FORMULA Peterson-COL-4-UpperBounds-15 5 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-4-UpperBounds-05 5 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-4-UpperBounds-04 5 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Peterson-COL-4-UpperBounds-01 5 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 30003 steps (6 resets) in 47 ms. (625 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1, 4, 4] Max Struct:[5, 5, 5]
[2026-05-25 14:35:39] [INFO ] Flow matrix only has 630 transitions (discarded 60 similar events)
[2026-05-25 14:35:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:39] [INFO ] [Real]Absence check using 14 positive place invariants in 10 ms returned sat
[2026-05-25 14:35:39] [INFO ] [Real]Absence check using 14 positive and 5 generalized place invariants in 3 ms returned sat
[2026-05-25 14:35:39] [INFO ] [Real]Absence check using state equation in 168 ms returned sat
[2026-05-25 14:35:39] [INFO ] State equation strengthened by 116 read => feed constraints.
[2026-05-25 14:35:39] [INFO ] [Real]Added 116 Read/Feed constraints in 36 ms returned sat
[2026-05-25 14:35:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:39] [INFO ] [Nat]Absence check using 14 positive place invariants in 10 ms returned sat
[2026-05-25 14:35:39] [INFO ] [Nat]Absence check using 14 positive and 5 generalized place invariants in 3 ms returned sat
[2026-05-25 14:35:39] [INFO ] [Nat]Absence check using state equation in 332 ms returned sat
[2026-05-25 14:35:40] [INFO ] [Nat]Added 116 Read/Feed constraints in 116 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:40] [INFO ] Deduced a trap composed of 10 places in 159 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:40] [INFO ] Deduced a trap composed of 14 places in 161 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:40] [INFO ] Deduced a trap composed of 25 places in 153 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:40] [INFO ] Deduced a trap composed of 14 places in 144 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:41] [INFO ] Deduced a trap composed of 36 places in 149 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:41] [INFO ] Deduced a trap composed of 47 places in 153 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:41] [INFO ] Deduced a trap composed of 36 places in 147 ms of which 22 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:41] [INFO ] Deduced a trap composed of 10 places in 145 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:41] [INFO ] Deduced a trap composed of 27 places in 148 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:42] [INFO ] Deduced a trap composed of 48 places in 145 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:42] [INFO ] Deduced a trap composed of 27 places in 134 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:42] [INFO ] Deduced a trap composed of 32 places in 148 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:43] [INFO ] Deduced a trap composed of 21 places in 159 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:43] [INFO ] Deduced a trap composed of 14 places in 135 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:43] [INFO ] Deduced a trap composed of 43 places in 149 ms of which 26 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:43] [INFO ] Deduced a trap composed of 36 places in 160 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:43] [INFO ] Deduced a trap composed of 10 places in 149 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:44] [INFO ] Deduced a trap composed of 21 places in 158 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:44] [INFO ] Deduced a trap composed of 32 places in 141 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:44] [INFO ] Deduced a trap composed of 43 places in 150 ms of which 22 ms to minimize.
[2026-05-25 14:35:44] [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 0
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:301)
at fr.lip6.move.gal.structural.smt.SMTTrapUtils.refineWithTraps(SMTTrapUtils.java:177)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:871)
at fr.lip6.move.gal.structural.smt.DeadlockTester.findStructuralMaxWithSMT(DeadlockTester.java:2254)
at fr.lip6.move.gal.application.solver.UpperBoundsSolver.applyReductions(UpperBoundsSolver.java:219)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:927)
at fr.lip6.move.gal.application.Application.start(Application.java:193)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:44)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208)
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:670)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:607)
at org.eclipse.equinox.launcher.Main.run(Main.java:1492)
at org.eclipse.equinox.launcher.Main.main(Main.java:1465)
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:44] [INFO ] [Real]Absence check using 14 positive place invariants in 10 ms returned sat
[2026-05-25 14:35:44] [INFO ] [Real]Absence check using 14 positive and 5 generalized place invariants in 3 ms returned sat
[2026-05-25 14:35:44] [INFO ] [Real]Absence check using state equation in 145 ms returned sat
[2026-05-25 14:35:44] [INFO ] [Real]Added 116 Read/Feed constraints in 38 ms returned sat
[2026-05-25 14:35:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:44] [INFO ] [Nat]Absence check using 14 positive place invariants in 10 ms returned sat
[2026-05-25 14:35:45] [INFO ] [Nat]Absence check using 14 positive and 5 generalized place invariants in 3 ms returned sat
[2026-05-25 14:35:45] [INFO ] [Nat]Absence check using state equation in 170 ms returned sat
[2026-05-25 14:35:45] [INFO ] [Nat]Added 116 Read/Feed constraints in 84 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:45] [INFO ] Deduced a trap composed of 14 places in 144 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:45] [INFO ] Deduced a trap composed of 10 places in 147 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:45] [INFO ] Deduced a trap composed of 10 places in 147 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:45] [INFO ] Deduced a trap composed of 10 places in 141 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:46] [INFO ] Deduced a trap composed of 10 places in 142 ms of which 8 ms to minimize.
[2026-05-25 14:35:46] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 5 trap constraints in 886 ms
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:46] [INFO ] [Real]Absence check using 14 positive place invariants in 10 ms returned sat
[2026-05-25 14:35:46] [INFO ] [Real]Absence check using 14 positive and 5 generalized place invariants in 3 ms returned sat
[2026-05-25 14:35:46] [INFO ] [Real]Absence check using state equation in 173 ms returned sat
[2026-05-25 14:35:46] [INFO ] [Real]Added 116 Read/Feed constraints in 33 ms returned sat
[2026-05-25 14:35:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-25 14:35:46] [INFO ] [Nat]Absence check using 14 positive place invariants in 10 ms returned sat
[2026-05-25 14:35:46] [INFO ] [Nat]Absence check using 14 positive and 5 generalized place invariants in 5 ms returned sat
[2026-05-25 14:35:46] [INFO ] [Nat]Absence check using state equation in 170 ms returned sat
[2026-05-25 14:35:46] [INFO ] [Nat]Added 116 Read/Feed constraints in 41 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:46] [INFO ] Deduced a trap composed of 39 places in 164 ms of which 26 ms to minimize.
[2026-05-25 14:35:47] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 221 ms
[2026-05-25 14:35:47] [INFO ] Computed and/alt/rep : 589/1046/589 causal constraints (skipped 36 transitions) in 39 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:49] [INFO ] Deduced a trap composed of 10 places in 140 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:49] [INFO ] Deduced a trap composed of 14 places in 144 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:49] [INFO ] Deduced a trap composed of 10 places in 139 ms of which 11 ms to minimize.
[2026-05-25 14:35:49] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 606 ms
[2026-05-25 14:35:49] [INFO ] Added : 185 causal constraints over 37 iterations in 2725 ms. Result :sat
Minimization took 206 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1, 4, 4] Max Struct:[5, 4, 5]
FORMULA Peterson-COL-4-UpperBounds-10 4 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Peterson-COL-4-UpperBounds-03 4 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 5] Max Struct:[5, 5]
Support contains 85 out of 480 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 480/480 places, 690/690 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 120 transitions
Trivial Post-agglo rules discarded 120 transitions
Performed 120 trivial Post agglomeration. Transition count delta: 120
Iterating post reduction 0 with 120 rules applied. Total rules applied 120 place count 480 transition count 570
Reduce places removed 120 places and 0 transitions.
Iterating post reduction 1 with 120 rules applied. Total rules applied 240 place count 360 transition count 570
Performed 95 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 95 Pre rules applied. Total rules applied 240 place count 360 transition count 475
Deduced a syphon composed of 95 places in 1 ms
Reduce places removed 95 places and 0 transitions.
Iterating global reduction 2 with 190 rules applied. Total rules applied 430 place count 265 transition count 475
Performed 20 Post agglomeration using F-continuation condition.Transition count delta: 20
Deduced a syphon composed of 20 places in 0 ms
Reduce places removed 20 places and 0 transitions.
Iterating global reduction 2 with 40 rules applied. Total rules applied 470 place count 245 transition count 455
Applied a total of 470 rules in 77 ms. Remains 245 /480 variables (removed 235) and now considering 455/690 (removed 235) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 83 ms. Remains : 245/480 places, 455/690 transitions.
[2026-05-25 14:35:50] [INFO ] Flow matrix only has 395 transitions (discarded 60 similar events)
// Phase 1: matrix 395 rows 245 cols
[2026-05-25 14:35:50] [INFO ] Computed 19 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1, 5] Max Struct:[5, 5]
FORMULA Peterson-COL-4-UpperBounds-08 5 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-COL-4-UpperBounds-13 5 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-COL-4-UpperBounds-06 5 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000000 steps (2 resets) in 1424 ms. (701 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 511 ms. (1953 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1] Max Struct:[5]
[2026-05-25 14:35:52] [INFO ] Flow matrix only has 395 transitions (discarded 60 similar events)
[2026-05-25 14:35:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:35:52] [INFO ] [Real]Absence check using 14 positive place invariants in 6 ms returned sat
[2026-05-25 14:35:52] [INFO ] [Real]Absence check using 14 positive and 5 generalized place invariants in 2 ms returned sat
[2026-05-25 14:35:52] [INFO ] [Real]Absence check using state equation in 87 ms returned sat
[2026-05-25 14:35:52] [INFO ] State equation strengthened by 116 read => feed constraints.
[2026-05-25 14:35:52] [INFO ] [Real]Added 116 Read/Feed constraints in 18 ms returned sat
[2026-05-25 14:35:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-25 14:35:52] [INFO ] [Nat]Absence check using 14 positive place invariants in 5 ms returned sat
[2026-05-25 14:35:52] [INFO ] [Nat]Absence check using 14 positive and 5 generalized place invariants in 4 ms returned sat
[2026-05-25 14:35:52] [INFO ] [Nat]Absence check using state equation in 77 ms returned sat
[2026-05-25 14:35:52] [INFO ] [Nat]Added 116 Read/Feed constraints in 26 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:52] [INFO ] Deduced a trap composed of 10 places in 84 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 10 places in 87 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 13 places in 89 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 13 places in 102 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 19 places in 118 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 19 places in 92 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 13 places in 81 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 10 places in 85 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:53] [INFO ] Deduced a trap composed of 23 places in 98 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 20 places in 97 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 20 places in 99 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 22 places in 92 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 23 places in 106 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 13 places in 90 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 16 places in 109 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 25 places in 104 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:54] [INFO ] Deduced a trap composed of 29 places in 76 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 17 places in 91 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 15 places in 83 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 25 places in 83 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 35 places in 82 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 36 places in 87 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 37 places in 81 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 25 places in 80 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:55] [INFO ] Deduced a trap composed of 10 places in 98 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:56] [INFO ] Deduced a trap composed of 17 places in 98 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:56] [INFO ] Deduced a trap composed of 20 places in 88 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:56] [INFO ] Deduced a trap composed of 26 places in 89 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:56] [INFO ] Deduced a trap composed of 31 places in 83 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:56] [INFO ] Deduced a trap composed of 30 places in 80 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:56] [INFO ] Deduced a trap composed of 31 places in 83 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:56] [INFO ] Deduced a trap composed of 29 places in 88 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:57] [INFO ] Deduced a trap composed of 35 places in 91 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:57] [INFO ] Deduced a trap composed of 29 places in 79 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:57] [INFO ] Deduced a trap composed of 27 places in 76 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:57] [INFO ] Deduced a trap composed of 35 places in 86 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:57] [INFO ] Deduced a trap composed of 35 places in 84 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:57] [INFO ] Deduced a trap composed of 33 places in 86 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:57] [INFO ] Deduced a trap composed of 33 places in 75 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 9 places in 201 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 21 places in 86 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 31 places in 83 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 45 places in 66 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 41 places in 71 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 39 places in 73 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 41 places in 73 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:58] [INFO ] Deduced a trap composed of 41 places in 68 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 19 places in 88 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 29 places in 73 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 21 places in 90 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 35 places in 88 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 33 places in 87 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 13 places in 102 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 11 places in 121 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:35:59] [INFO ] Deduced a trap composed of 23 places in 96 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 39 places in 79 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 39 places in 61 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 45 places in 65 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 39 places in 70 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 31 places in 95 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 45 places in 73 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 43 places in 71 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:01] [INFO ] Deduced a trap composed of 43 places in 68 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:02] [INFO ] Deduced a trap composed of 33 places in 76 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:02] [INFO ] Deduced a trap composed of 45 places in 69 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:02] [INFO ] Deduced a trap composed of 45 places in 71 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:03] [INFO ] Deduced a trap composed of 35 places in 69 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:03] [INFO ] Deduced a trap composed of 41 places in 76 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:03] [INFO ] Deduced a trap composed of 43 places in 67 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:04] [INFO ] Deduced a trap composed of 29 places in 80 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:04] [INFO ] Deduced a trap composed of 21 places in 88 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:04] [INFO ] Deduced a trap composed of 23 places in 89 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:04] [INFO ] Deduced a trap composed of 31 places in 88 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:04] [INFO ] Deduced a trap composed of 33 places in 79 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:04] [INFO ] Deduced a trap composed of 41 places in 63 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:04] [INFO ] Deduced a trap composed of 43 places in 68 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-25 14:36:05] [INFO ] Deduced a trap composed of 43 places in 71 ms of which 7 ms to minimize.
[2026-05-25 14:36:05] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 77 trap constraints in 12352 ms
Current structural bounds on expressions (after SMT) : Max Seen:[1] Max Struct:[1]
FORMULA Peterson-COL-4-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Peterson-COL-4-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA Peterson-COL-4-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2026-05-25 14:36:05] [INFO ] Flatten gal took : 58 ms
[2026-05-25 14:36:05] [INFO ] Flatten gal took : 30 ms
[2026-05-25 14:36:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4341276241997886547.gal : 15 ms
[2026-05-25 14:36:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11827120393554959072.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality4341276241997886547.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11827120393554959072.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.

ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 27884 ms.

BK_STOP 1779719765449

--------------------
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//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

Sequence of Actions to be Executed by the VM

This is useful if one wants to reexecute the tool in the VM from the submitted image disk.

set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="Peterson-COL-4"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool gold2025"
echo " Input is Peterson-COL-4, 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 r207-tall-177969919700084"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Peterson-COL-4.tgz
mv Peterson-COL-4 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 ;