./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f41c28130c65bb66e6565b71877e71077746007ac43c6aef3ce3b863878a53a --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:44:44,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:44:44,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-14 01:44:44,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:44:44,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:44:44,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:44:44,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:44:44,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:44:44,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:44:44,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:44:44,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:44:44,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:44:44,169 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:44:44,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:44:44,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:44:44,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:44:44,170 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f41c28130c65bb66e6565b71877e71077746007ac43c6aef3ce3b863878a53a [2025-03-14 01:44:44,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:44:44,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:44:44,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:44:44,408 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:44:44,408 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:44:44,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2025-03-14 01:44:45,583 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa30c0e1/abfa33101a73447993f4b7b854d57415/FLAG3ccec7a56 [2025-03-14 01:44:45,823 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:44:45,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2025-03-14 01:44:45,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa30c0e1/abfa33101a73447993f4b7b854d57415/FLAG3ccec7a56 [2025-03-14 01:44:45,852 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa30c0e1/abfa33101a73447993f4b7b854d57415 [2025-03-14 01:44:45,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:44:45,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:44:45,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:44:45,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:44:45,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:44:45,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:44:45" (1/1) ... [2025-03-14 01:44:45,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289c747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:45, skipping insertion in model container [2025-03-14 01:44:45,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:44:45" (1/1) ... [2025-03-14 01:44:45,876 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:44:46,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:44:46,018 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:44:46,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:44:46,060 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:44:46,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46 WrapperNode [2025-03-14 01:44:46,061 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:44:46,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:44:46,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:44:46,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:44:46,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,092 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 298 [2025-03-14 01:44:46,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:44:46,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:44:46,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:44:46,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:44:46,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,110 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:44:46,115 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:44:46,115 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:44:46,115 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:44:46,116 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (1/1) ... [2025-03-14 01:44:46,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:44:46,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:44:46,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 01:44:46,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 01:44:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:44:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:44:46,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:44:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:44:46,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:44:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:44:46,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:44:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-14 01:44:46,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-14 01:44:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-14 01:44:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-14 01:44:46,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-14 01:44:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-03-14 01:44:46,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-03-14 01:44:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:44:46,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:44:46,178 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:44:46,282 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:44:46,284 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:44:46,614 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:44:46,615 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:44:46,615 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:44:46,661 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:44:46,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:44:46 BoogieIcfgContainer [2025-03-14 01:44:46,661 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:44:46,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:44:46,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:44:46,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:44:46,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:44:45" (1/3) ... [2025-03-14 01:44:46,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583bfa75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:44:46, skipping insertion in model container [2025-03-14 01:44:46,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:44:46" (2/3) ... [2025-03-14 01:44:46,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583bfa75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:44:46, skipping insertion in model container [2025-03-14 01:44:46,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:44:46" (3/3) ... [2025-03-14 01:44:46,669 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2025-03-14 01:44:46,682 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:44:46,684 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-6.wvr.c that has 7 procedures, 315 locations, 1 initial locations, 0 loop locations, and 18 error locations. [2025-03-14 01:44:46,684 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:44:46,774 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-03-14 01:44:46,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 327 transitions, 696 flow [2025-03-14 01:44:46,917 INFO L124 PetriNetUnfolderBase]: 13/321 cut-off events. [2025-03-14 01:44:46,920 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-14 01:44:46,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 321 events. 13/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 602 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 279. Up to 2 conditions per place. [2025-03-14 01:44:46,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 327 transitions, 696 flow [2025-03-14 01:44:46,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 304 transitions, 641 flow [2025-03-14 01:44:46,939 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:44:46,947 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6910ad19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:44:46,947 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-14 01:44:46,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:44:46,956 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2025-03-14 01:44:46,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:44:46,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:44:46,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:44:46,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-14 01:44:46,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:44:46,962 INFO L85 PathProgramCache]: Analyzing trace with hash -546282299, now seen corresponding path program 1 times [2025-03-14 01:44:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:44:46,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700347174] [2025-03-14 01:44:46,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:44:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:44:47,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-14 01:44:47,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-14 01:44:47,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:44:47,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:44:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:44:47,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:44:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700347174] [2025-03-14 01:44:47,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700347174] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:44:47,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:44:47,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:44:47,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821085508] [2025-03-14 01:44:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:44:47,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:44:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:44:47,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:44:47,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:44:47,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-14 01:44:47,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 304 transitions, 641 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:44:47,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:44:47,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-14 01:44:47,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:44:59,283 INFO L124 PetriNetUnfolderBase]: 41021/100072 cut-off events. [2025-03-14 01:44:59,284 INFO L125 PetriNetUnfolderBase]: For 4917/4917 co-relation queries the response was YES. [2025-03-14 01:45:00,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154655 conditions, 100072 events. 41021/100072 cut-off events. For 4917/4917 co-relation queries the response was YES. Maximal size of possible extension queue 3334. Compared 1290232 event pairs, 28796 based on Foata normal form. 10128/98054 useless extension candidates. Maximal degree in co-relation 153455. Up to 49704 conditions per place. [2025-03-14 01:45:00,811 INFO L140 encePairwiseOnDemand]: 317/327 looper letters, 39 selfloop transitions, 2 changer transitions 1/296 dead transitions. [2025-03-14 01:45:00,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 296 transitions, 707 flow [2025-03-14 01:45:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:45:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:45:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2025-03-14 01:45:00,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8878695208970439 [2025-03-14 01:45:00,832 INFO L175 Difference]: Start difference. First operand has 311 places, 304 transitions, 641 flow. Second operand 3 states and 871 transitions. [2025-03-14 01:45:00,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 296 transitions, 707 flow [2025-03-14 01:45:00,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 296 transitions, 686 flow, removed 0 selfloop flow, removed 11 redundant places. [2025-03-14 01:45:00,924 INFO L231 Difference]: Finished difference. Result has 301 places, 295 transitions, 606 flow [2025-03-14 01:45:00,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=301, PETRI_TRANSITIONS=295} [2025-03-14 01:45:00,930 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -10 predicate places. [2025-03-14 01:45:00,932 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 295 transitions, 606 flow [2025-03-14 01:45:00,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:45:00,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:45:00,932 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:45:00,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:45:00,933 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-14 01:45:00,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:45:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1985797247, now seen corresponding path program 1 times [2025-03-14 01:45:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:45:00,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115482317] [2025-03-14 01:45:00,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:45:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:45:00,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-14 01:45:00,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-14 01:45:00,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:45:00,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:45:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:45:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:45:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115482317] [2025-03-14 01:45:00,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115482317] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:45:00,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:45:00,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:45:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122676855] [2025-03-14 01:45:00,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:45:00,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:45:00,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:45:00,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:45:00,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:45:01,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-14 01:45:01,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 295 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:45:01,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:45:01,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-14 01:45:01,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:45:12,635 INFO L124 PetriNetUnfolderBase]: 46206/107022 cut-off events. [2025-03-14 01:45:12,635 INFO L125 PetriNetUnfolderBase]: For 1456/1456 co-relation queries the response was YES. [2025-03-14 01:45:13,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166702 conditions, 107022 events. 46206/107022 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 3659. Compared 1346874 event pairs, 33264 based on Foata normal form. 0/94420 useless extension candidates. Maximal degree in co-relation 166664. Up to 56055 conditions per place. [2025-03-14 01:45:13,979 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 39 selfloop transitions, 2 changer transitions 0/294 dead transitions. [2025-03-14 01:45:13,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 294 transitions, 686 flow [2025-03-14 01:45:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:45:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:45:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 864 transitions. [2025-03-14 01:45:13,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2025-03-14 01:45:13,982 INFO L175 Difference]: Start difference. First operand has 301 places, 295 transitions, 606 flow. Second operand 3 states and 864 transitions. [2025-03-14 01:45:13,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 294 transitions, 686 flow [2025-03-14 01:45:13,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 294 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:45:13,985 INFO L231 Difference]: Finished difference. Result has 299 places, 294 transitions, 604 flow [2025-03-14 01:45:13,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=299, PETRI_TRANSITIONS=294} [2025-03-14 01:45:13,986 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -12 predicate places. [2025-03-14 01:45:13,986 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 294 transitions, 604 flow [2025-03-14 01:45:13,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:45:13,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:45:13,987 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:45:13,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:45:13,987 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-14 01:45:13,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:45:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1042015774, now seen corresponding path program 1 times [2025-03-14 01:45:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:45:13,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147989939] [2025-03-14 01:45:13,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:45:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:45:13,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-14 01:45:14,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-14 01:45:14,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:45:14,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:45:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:45:14,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:45:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147989939] [2025-03-14 01:45:14,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147989939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:45:14,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:45:14,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:45:14,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283883601] [2025-03-14 01:45:14,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:45:14,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:45:14,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:45:14,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:45:14,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:45:14,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-14 01:45:14,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 294 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:45:14,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:45:14,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-14 01:45:14,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand