/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-1-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:53:16,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:53:16,586 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:53:16,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:53:16,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:53:16,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:53:16,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:53:16,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:53:16,619 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:53:16,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:53:16,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:53:16,622 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:53:16,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:53:16,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:53:16,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:53:16,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:53:16,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:53:16,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:53:16,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:53:16,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:53:16,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:53:16,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:53:16,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:53:16,626 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:53:16,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:53:16,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:53:16,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:53:16,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:53:16,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:53:16,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:53:16,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:53:16,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:53:16,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:53:16,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:53:16,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:53:16,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:53:16,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:53:16,823 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:53:16,823 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:53:16,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-1-pthread.i [2023-12-09 14:53:17,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:53:18,117 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:53:18,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-1-pthread.i [2023-12-09 14:53:18,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de29ca31/4b682940be0d45fd8b25101fc095ba2a/FLAG584f4021a [2023-12-09 14:53:18,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8de29ca31/4b682940be0d45fd8b25101fc095ba2a [2023-12-09 14:53:18,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:53:18,141 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:53:18,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:53:18,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:53:18,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:53:18,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa38929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18, skipping insertion in model container [2023-12-09 14:53:18,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,181 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:53:18,350 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-1-pthread.i[31356,31369] [2023-12-09 14:53:18,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:53:18,365 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:53:18,392 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-1-pthread.i[31356,31369] [2023-12-09 14:53:18,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:53:18,412 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:53:18,412 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:53:18,417 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:53:18,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18 WrapperNode [2023-12-09 14:53:18,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:53:18,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:53:18,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:53:18,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:53:18,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,446 INFO L138 Inliner]: procedures = 172, calls = 38, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 133 [2023-12-09 14:53:18,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:53:18,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:53:18,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:53:18,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:53:18,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:53:18,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:53:18,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:53:18,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:53:18,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (1/1) ... [2023-12-09 14:53:18,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:53:18,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:53:18,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 14:53:18,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 14:53:18,512 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:53:18,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:53:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:53:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 14:53:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:53:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:53:18,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:53:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:53:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:53:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:53:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 14:53:18,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:53:18,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:53:18,516 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:53:18,609 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:53:18,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:53:18,755 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:53:18,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:53:18,798 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 14:53:18,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:53:18 BoogieIcfgContainer [2023-12-09 14:53:18,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:53:18,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:53:18,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:53:18,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:53:18,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:53:18" (1/3) ... [2023-12-09 14:53:18,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b6d7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:53:18, skipping insertion in model container [2023-12-09 14:53:18,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:53:18" (2/3) ... [2023-12-09 14:53:18,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b6d7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:53:18, skipping insertion in model container [2023-12-09 14:53:18,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:53:18" (3/3) ... [2023-12-09 14:53:18,805 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-1-pthread.i [2023-12-09 14:53:18,818 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:53:18,818 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:53:18,818 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:53:18,882 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:18,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 114 transitions, 232 flow [2023-12-09 14:53:19,009 INFO L124 PetriNetUnfolderBase]: 8/125 cut-off events. [2023-12-09 14:53:19,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:53:19,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 8/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-12-09 14:53:19,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 114 transitions, 232 flow [2023-12-09 14:53:19,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 114 transitions, 232 flow [2023-12-09 14:53:19,033 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,039 INFO L362 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, mHoare=true, 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;@64b8a512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,039 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:53:19,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,056 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2023-12-09 14:53:19,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:53:19,057 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,058 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2023-12-09 14:53:19,058 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-09 14:53:19,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,062 INFO L85 PathProgramCache]: Analyzing trace with hash -298817268, now seen corresponding path program 1 times [2023-12-09 14:53:19,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021241438] [2023-12-09 14:53:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:19,255 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:19,256 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-12-09 14:53:19,258 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-09 14:53:19,258 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-09 14:53:19,258 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:53:19,259 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:19,261 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:19,261 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:53:19,313 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:19,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 187 transitions, 384 flow [2023-12-09 14:53:19,372 INFO L124 PetriNetUnfolderBase]: 15/211 cut-off events. [2023-12-09 14:53:19,372 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:53:19,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 211 events. 15/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 388 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 157. Up to 6 conditions per place. [2023-12-09 14:53:19,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 187 transitions, 384 flow [2023-12-09 14:53:19,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 187 transitions, 384 flow [2023-12-09 14:53:19,382 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,384 INFO L362 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, mHoare=true, 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;@64b8a512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,384 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 14:53:19,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,395 INFO L124 PetriNetUnfolderBase]: 5/96 cut-off events. [2023-12-09 14:53:19,395 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:53:19,396 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,396 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 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] [2023-12-09 14:53:19,396 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 14:53:19,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1524630284, now seen corresponding path program 1 times [2023-12-09 14:53:19,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149739133] [2023-12-09 14:53:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,469 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:19,469 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:19,469 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-12-09 14:53:19,469 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-09 14:53:19,470 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-12-09 14:53:19,470 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-09 14:53:19,470 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:53:19,470 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:19,471 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:19,471 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:53:19,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:19,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 260 transitions, 538 flow [2023-12-09 14:53:19,594 INFO L124 PetriNetUnfolderBase]: 22/297 cut-off events. [2023-12-09 14:53:19,595 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:53:19,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 297 events. 22/297 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 773 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 229. Up to 8 conditions per place. [2023-12-09 14:53:19,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 260 transitions, 538 flow [2023-12-09 14:53:19,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 260 transitions, 538 flow [2023-12-09 14:53:19,603 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,607 INFO L362 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, mHoare=true, 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;@64b8a512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,607 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:53:19,620 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,620 INFO L124 PetriNetUnfolderBase]: 9/139 cut-off events. [2023-12-09 14:53:19,621 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:53:19,621 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,621 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2023-12-09 14:53:19,621 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 14:53:19,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1678657814, now seen corresponding path program 1 times [2023-12-09 14:53:19,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695481575] [2023-12-09 14:53:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:19,687 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:19,687 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 14:53:19,687 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:53:19,688 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 14:53:19,688 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 14:53:19,688 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:53:19,688 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:53:19,688 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:19,689 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:19,689 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:53:19,746 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:19,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 333 transitions, 694 flow [2023-12-09 14:53:19,835 INFO L124 PetriNetUnfolderBase]: 29/383 cut-off events. [2023-12-09 14:53:19,835 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:53:19,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 383 events. 29/383 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1218 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 305. Up to 10 conditions per place. [2023-12-09 14:53:19,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 333 transitions, 694 flow [2023-12-09 14:53:19,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 333 transitions, 694 flow [2023-12-09 14:53:19,843 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:19,847 INFO L362 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, mHoare=true, 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;@64b8a512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:19,847 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:53:19,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:19,862 INFO L124 PetriNetUnfolderBase]: 13/194 cut-off events. [2023-12-09 14:53:19,862 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:53:19,863 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:19,863 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 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] [2023-12-09 14:53:19,863 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 14:53:19,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1660113379, now seen corresponding path program 1 times [2023-12-09 14:53:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884014781] [2023-12-09 14:53:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:19,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:19,938 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:19,938 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-09 14:53:19,938 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-12-09 14:53:19,939 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-12-09 14:53:19,939 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 14:53:19,939 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 14:53:19,939 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:53:19,939 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:53:19,939 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:19,940 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:19,940 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-12-09 14:53:19,991 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:19,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 406 transitions, 852 flow [2023-12-09 14:53:20,059 INFO L124 PetriNetUnfolderBase]: 36/469 cut-off events. [2023-12-09 14:53:20,059 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-12-09 14:53:20,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 469 events. 36/469 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1681 event pairs, 0 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 396. Up to 12 conditions per place. [2023-12-09 14:53:20,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 406 transitions, 852 flow [2023-12-09 14:53:20,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 406 transitions, 852 flow [2023-12-09 14:53:20,075 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:20,076 INFO L362 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, mHoare=true, 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;@64b8a512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:20,076 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:53:20,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:20,103 INFO L124 PetriNetUnfolderBase]: 18/256 cut-off events. [2023-12-09 14:53:20,103 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-12-09 14:53:20,103 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:20,104 INFO L233 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 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] [2023-12-09 14:53:20,104 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-12-09 14:53:20,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash 120857388, now seen corresponding path program 1 times [2023-12-09 14:53:20,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:20,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718126988] [2023-12-09 14:53:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:20,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:20,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:20,162 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:20,163 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-12-09 14:53:20,163 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-12-09 14:53:20,163 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-12-09 14:53:20,163 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-12-09 14:53:20,163 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-12-09 14:53:20,163 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-12-09 14:53:20,163 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-12-09 14:53:20,163 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:53:20,164 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:20,164 WARN L227 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:20,164 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-12-09 14:53:20,285 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:20,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 479 transitions, 1012 flow [2023-12-09 14:53:20,404 INFO L124 PetriNetUnfolderBase]: 43/555 cut-off events. [2023-12-09 14:53:20,404 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-12-09 14:53:20,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 555 events. 43/555 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2178 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 488. Up to 14 conditions per place. [2023-12-09 14:53:20,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 479 transitions, 1012 flow [2023-12-09 14:53:20,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 479 transitions, 1012 flow [2023-12-09 14:53:20,434 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:20,436 INFO L362 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, mHoare=true, 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;@64b8a512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:20,437 INFO L363 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-09 14:53:20,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:20,474 INFO L124 PetriNetUnfolderBase]: 23/333 cut-off events. [2023-12-09 14:53:20,474 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-12-09 14:53:20,474 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:20,474 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 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] [2023-12-09 14:53:20,474 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-12-09 14:53:20,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1106148114, now seen corresponding path program 1 times [2023-12-09 14:53:20,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:20,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307454565] [2023-12-09 14:53:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:20,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:53:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:53:20,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:53:20,531 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:53:20,531 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-12-09 14:53:20,531 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-12-09 14:53:20,532 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-12-09 14:53:20,534 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-12-09 14:53:20,534 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-12-09 14:53:20,535 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-12-09 14:53:20,535 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-12-09 14:53:20,535 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-12-09 14:53:20,535 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:53:20,535 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:53:20,536 WARN L227 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:53:20,536 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-12-09 14:53:20,642 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:53:20,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 524 places, 552 transitions, 1174 flow [2023-12-09 14:53:20,815 INFO L124 PetriNetUnfolderBase]: 50/641 cut-off events. [2023-12-09 14:53:20,815 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-12-09 14:53:20,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 641 events. 50/641 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2668 event pairs, 0 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 581. Up to 16 conditions per place. [2023-12-09 14:53:20,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 524 places, 552 transitions, 1174 flow [2023-12-09 14:53:20,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 524 places, 552 transitions, 1174 flow [2023-12-09 14:53:20,856 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:53:20,858 INFO L362 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, mHoare=true, 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;@64b8a512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:53:20,858 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-09 14:53:20,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:53:20,916 INFO L124 PetriNetUnfolderBase]: 28/379 cut-off events. [2023-12-09 14:53:20,916 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-12-09 14:53:20,916 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:53:20,916 INFO L233 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, 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] [2023-12-09 14:53:20,916 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-12-09 14:53:20,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:53:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2076717985, now seen corresponding path program 1 times [2023-12-09 14:53:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:53:20,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197362301] [2023-12-09 14:53:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:53:20,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:53:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:53:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:53:21,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:53:21,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197362301] [2023-12-09 14:53:21,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197362301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:53:21,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:53:21,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:53:21,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026232734] [2023-12-09 14:53:21,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:53:21,060 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:53:21,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:53:21,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:53:21,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:53:21,090 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 552 [2023-12-09 14:53:21,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 552 transitions, 1174 flow. Second operand has 3 states, 3 states have (on average 439.6666666666667) internal successors, (1319), 3 states have internal predecessors, (1319), 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) [2023-12-09 14:53:21,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:53:21,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 552 [2023-12-09 14:53:21,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand