/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:04:41,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:04:41,754 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 [2023-12-05 21:04:41,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:04:41,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:04:41,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:04:41,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:04:41,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:04:41,777 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:04:41,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:04:41,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:04:41,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:04:41,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:04:41,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:04:41,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:04:41,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:04:41,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:04:41,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:04:41,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:04:41,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:04:41,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:04:41,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:04:41,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:04:41,782 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:04:41,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:04:41,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:04:41,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:04:41,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:04:41,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:04:41,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:04:41,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:04:41,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:04:41,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:04:41,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:04:42,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:04:42,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:04:42,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:04:42,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:04:42,041 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:04:42,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-12-05 21:04:43,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:04:43,377 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:04:43,377 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-12-05 21:04:43,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6129cd734/eb6e5b19462840ebb3dd6f27562f343a/FLAG0eff75ac9 [2023-12-05 21:04:43,406 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6129cd734/eb6e5b19462840ebb3dd6f27562f343a [2023-12-05 21:04:43,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:04:43,409 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:04:43,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:04:43,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:04:43,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:04:43,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53351e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43, skipping insertion in model container [2023-12-05 21:04:43,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,461 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:04:43,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:04:43,722 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:04:43,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:04:43,819 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:04:43,820 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:04:43,826 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:04:43,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43 WrapperNode [2023-12-05 21:04:43,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:04:43,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:04:43,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:04:43,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:04:43,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,881 INFO L138 Inliner]: procedures = 172, calls = 40, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 110 [2023-12-05 21:04:43,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:04:43,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:04:43,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:04:43,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:04:43,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:04:43,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:04:43,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:04:43,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:04:43,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (1/1) ... [2023-12-05 21:04:43,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:04:43,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:04:43,950 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) [2023-12-05 21:04:43,955 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 [2023-12-05 21:04:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:04:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-05 21:04:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-05 21:04:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:04:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:04:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:04:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:04:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:04:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:04:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:04:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:04:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:04:43,977 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:04:44,092 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:04:44,094 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:04:44,313 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:04:44,470 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:04:44,470 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-05 21:04:44,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:04:44 BoogieIcfgContainer [2023-12-05 21:04:44,472 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:04:44,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:04:44,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:04:44,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:04:44,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:04:43" (1/3) ... [2023-12-05 21:04:44,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f46ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:04:44, skipping insertion in model container [2023-12-05 21:04:44,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:04:43" (2/3) ... [2023-12-05 21:04:44,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f46ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:04:44, skipping insertion in model container [2023-12-05 21:04:44,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:04:44" (3/3) ... [2023-12-05 21:04:44,484 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-12-05 21:04:44,498 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:04:44,498 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-12-05 21:04:44,498 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:04:44,599 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:04:44,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 116 transitions, 236 flow [2023-12-05 21:04:44,684 INFO L124 PetriNetUnfolderBase]: 9/129 cut-off events. [2023-12-05 21:04:44,687 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:04:44,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 129 events. 9/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 271 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-12-05 21:04:44,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 116 transitions, 236 flow [2023-12-05 21:04:44,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 116 transitions, 236 flow [2023-12-05 21:04:44,712 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:04:44,718 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;@7011ef5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:04:44,718 INFO L363 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-12-05 21:04:44,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:04:44,733 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-12-05 21:04:44,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:04:44,733 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:04:44,734 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:04:44,735 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-12-05 21:04:44,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:04:44,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1382879771, now seen corresponding path program 1 times [2023-12-05 21:04:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:04:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557079067] [2023-12-05 21:04:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:04:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:04:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:04:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:04:45,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:04:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557079067] [2023-12-05 21:04:45,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557079067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:04:45,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:04:45,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:04:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256473322] [2023-12-05 21:04:45,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:04:45,036 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:04:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:04:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:04:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:04:45,075 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 116 [2023-12-05 21:04:45,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 116 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2023-12-05 21:04:45,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:04:45,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 116 [2023-12-05 21:04:45,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:04:45,349 INFO L124 PetriNetUnfolderBase]: 167/644 cut-off events. [2023-12-05 21:04:45,350 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:04:45,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 644 events. 167/644 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3729 event pairs, 85 based on Foata normal form. 83/468 useless extension candidates. Maximal degree in co-relation 986. Up to 202 conditions per place. [2023-12-05 21:04:45,356 INFO L140 encePairwiseOnDemand]: 102/116 looper letters, 72 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2023-12-05 21:04:45,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 130 transitions, 416 flow [2023-12-05 21:04:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:04:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:04:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-12-05 21:04:45,368 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7902298850574713 [2023-12-05 21:04:45,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-12-05 21:04:45,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-12-05 21:04:45,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:04:45,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-12-05 21:04:45,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-12-05 21:04:45,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2023-12-05 21:04:45,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2023-12-05 21:04:45,386 INFO L308 CegarLoopForPetriNet]: 111 programPoint places, -13 predicate places. [2023-12-05 21:04:45,386 INFO L500 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 416 flow [2023-12-05 21:04:45,386 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2023-12-05 21:04:45,386 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:04:45,387 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:04:45,387 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:04:45,387 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-12-05 21:04:45,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:04:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1382879772, now seen corresponding path program 1 times [2023-12-05 21:04:45,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:04:45,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671360097] [2023-12-05 21:04:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:04:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:04:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:04:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:04:45,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:04:45,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671360097] [2023-12-05 21:04:45,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671360097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:04:45,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:04:45,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:04:45,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561507175] [2023-12-05 21:04:45,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:04:45,550 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:04:45,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:04:45,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:04:45,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:04:45,553 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 116 [2023-12-05 21:04:45,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2023-12-05 21:04:45,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:04:45,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 116 [2023-12-05 21:04:45,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:04:45,681 INFO L124 PetriNetUnfolderBase]: 118/469 cut-off events. [2023-12-05 21:04:45,682 INFO L125 PetriNetUnfolderBase]: For 54/56 co-relation queries the response was YES. [2023-12-05 21:04:45,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 469 events. 118/469 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2301 event pairs, 68 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 962. Up to 258 conditions per place. [2023-12-05 21:04:45,689 INFO L140 encePairwiseOnDemand]: 114/116 looper letters, 63 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2023-12-05 21:04:45,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 536 flow [2023-12-05 21:04:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:04:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:04:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-12-05 21:04:45,694 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2023-12-05 21:04:45,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-12-05 21:04:45,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-12-05 21:04:45,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:04:45,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-12-05 21:04:45,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-12-05 21:04:45,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2023-12-05 21:04:45,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2023-12-05 21:04:45,698 INFO L308 CegarLoopForPetriNet]: 111 programPoint places, -12 predicate places. [2023-12-05 21:04:45,699 INFO L500 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 536 flow [2023-12-05 21:04:45,699 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2023-12-05 21:04:45,699 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:04:45,699 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] [2023-12-05 21:04:45,700 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:04:45,700 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-12-05 21:04:45,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:04:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash -552212157, now seen corresponding path program 1 times [2023-12-05 21:04:45,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:04:45,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544664043] [2023-12-05 21:04:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:04:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:04:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:04:45,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-05 21:04:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:04:45,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-05 21:04:45,774 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-05 21:04:45,776 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (58 of 59 remaining) [2023-12-05 21:04:45,778 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 59 remaining) [2023-12-05 21:04:45,778 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 59 remaining) [2023-12-05 21:04:45,778 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 59 remaining) [2023-12-05 21:04:45,779 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 59 remaining) [2023-12-05 21:04:45,779 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 59 remaining) [2023-12-05 21:04:45,780 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 59 remaining) [2023-12-05 21:04:45,782 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 59 remaining) [2023-12-05 21:04:45,783 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 59 remaining) [2023-12-05 21:04:45,783 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (49 of 59 remaining) [2023-12-05 21:04:45,783 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 59 remaining) [2023-12-05 21:04:45,783 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 59 remaining) [2023-12-05 21:04:45,784 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 59 remaining) [2023-12-05 21:04:45,784 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 59 remaining) [2023-12-05 21:04:45,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (44 of 59 remaining) [2023-12-05 21:04:45,792 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 59 remaining) [2023-12-05 21:04:45,792 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 59 remaining) [2023-12-05 21:04:45,792 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 59 remaining) [2023-12-05 21:04:45,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 59 remaining) [2023-12-05 21:04:45,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 59 remaining) [2023-12-05 21:04:45,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 59 remaining) [2023-12-05 21:04:45,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 59 remaining) [2023-12-05 21:04:45,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 59 remaining) [2023-12-05 21:04:45,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 59 remaining) [2023-12-05 21:04:45,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 59 remaining) [2023-12-05 21:04:45,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 59 remaining) [2023-12-05 21:04:45,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 59 remaining) [2023-12-05 21:04:45,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 59 remaining) [2023-12-05 21:04:45,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 59 remaining) [2023-12-05 21:04:45,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 59 remaining) [2023-12-05 21:04:45,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 59 remaining) [2023-12-05 21:04:45,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 59 remaining) [2023-12-05 21:04:45,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 59 remaining) [2023-12-05 21:04:45,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 59 remaining) [2023-12-05 21:04:45,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 59 remaining) [2023-12-05 21:04:45,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 59 remaining) [2023-12-05 21:04:45,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 59 remaining) [2023-12-05 21:04:45,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 59 remaining) [2023-12-05 21:04:45,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 59 remaining) [2023-12-05 21:04:45,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (19 of 59 remaining) [2023-12-05 21:04:45,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 59 remaining) [2023-12-05 21:04:45,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 59 remaining) [2023-12-05 21:04:45,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 59 remaining) [2023-12-05 21:04:45,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 59 remaining) [2023-12-05 21:04:45,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (14 of 59 remaining) [2023-12-05 21:04:45,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 59 remaining) [2023-12-05 21:04:45,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 59 remaining) [2023-12-05 21:04:45,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 59 remaining) [2023-12-05 21:04:45,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 59 remaining) [2023-12-05 21:04:45,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 59 remaining) [2023-12-05 21:04:45,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 59 remaining) [2023-12-05 21:04:45,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 59 remaining) [2023-12-05 21:04:45,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 59 remaining) [2023-12-05 21:04:45,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 59 remaining) [2023-12-05 21:04:45,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 59 remaining) [2023-12-05 21:04:45,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 59 remaining) [2023-12-05 21:04:45,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 59 remaining) [2023-12-05 21:04:45,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 59 remaining) [2023-12-05 21:04:45,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 59 remaining) [2023-12-05 21:04:45,800 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:04:45,801 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-05 21:04:45,804 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-05 21:04:45,804 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-05 21:04:45,894 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:04:45,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 202 transitions, 414 flow [2023-12-05 21:04:45,940 INFO L124 PetriNetUnfolderBase]: 17/230 cut-off events. [2023-12-05 21:04:45,940 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:04:45,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 230 events. 17/230 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 782 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 185. Up to 6 conditions per place. [2023-12-05 21:04:45,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 202 transitions, 414 flow [2023-12-05 21:04:45,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 202 transitions, 414 flow [2023-12-05 21:04:45,949 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:04:45,950 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;@7011ef5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:04:45,950 INFO L363 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2023-12-05 21:04:45,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:04:45,953 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-12-05 21:04:45,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:04:45,953 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:04:45,953 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:04:45,953 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-12-05 21:04:45,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:04:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash -867256997, now seen corresponding path program 1 times [2023-12-05 21:04:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:04:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851530332] [2023-12-05 21:04:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:04:45,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:04:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:04:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:04:45,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:04:45,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851530332] [2023-12-05 21:04:45,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851530332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:04:45,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:04:45,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:04:46,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359612919] [2023-12-05 21:04:46,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:04:46,000 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:04:46,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:04:46,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:04:46,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:04:46,002 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 202 [2023-12-05 21:04:46,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 202 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-12-05 21:04:46,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:04:46,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 202 [2023-12-05 21:04:46,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:04:49,865 INFO L124 PetriNetUnfolderBase]: 13812/29527 cut-off events. [2023-12-05 21:04:49,866 INFO L125 PetriNetUnfolderBase]: For 425/425 co-relation queries the response was YES. [2023-12-05 21:04:49,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50686 conditions, 29527 events. 13812/29527 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 301273 event pairs, 5522 based on Foata normal form. 4037/20063 useless extension candidates. Maximal degree in co-relation 45641. Up to 11868 conditions per place. [2023-12-05 21:04:50,167 INFO L140 encePairwiseOnDemand]: 179/202 looper letters, 136 selfloop transitions, 6 changer transitions 0/236 dead transitions. [2023-12-05 21:04:50,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 236 transitions, 771 flow [2023-12-05 21:04:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:04:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:04:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-12-05 21:04:50,170 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8036303630363036 [2023-12-05 21:04:50,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-12-05 21:04:50,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-12-05 21:04:50,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:04:50,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-12-05 21:04:50,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 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) [2023-12-05 21:04:50,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-12-05 21:04:50,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-12-05 21:04:50,175 INFO L308 CegarLoopForPetriNet]: 192 programPoint places, -22 predicate places. [2023-12-05 21:04:50,175 INFO L500 AbstractCegarLoop]: Abstraction has has 170 places, 236 transitions, 771 flow [2023-12-05 21:04:50,175 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2023-12-05 21:04:50,175 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:04:50,175 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:04:50,176 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:04:50,176 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-12-05 21:04:50,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:04:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash -867256996, now seen corresponding path program 1 times [2023-12-05 21:04:50,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:04:50,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749419111] [2023-12-05 21:04:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:04:50,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:04:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:04:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:04:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:04:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749419111] [2023-12-05 21:04:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749419111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:04:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:04:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:04:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202667410] [2023-12-05 21:04:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:04:50,223 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:04:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:04:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:04:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:04:50,225 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 202 [2023-12-05 21:04:50,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 236 transitions, 771 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-12-05 21:04:50,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:04:50,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 202 [2023-12-05 21:04:50,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:04:53,141 INFO L124 PetriNetUnfolderBase]: 12039/25066 cut-off events. [2023-12-05 21:04:53,141 INFO L125 PetriNetUnfolderBase]: For 3473/3855 co-relation queries the response was YES. [2023-12-05 21:04:53,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59007 conditions, 25066 events. 12039/25066 cut-off events. For 3473/3855 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 241675 event pairs, 5561 based on Foata normal form. 2/16866 useless extension candidates. Maximal degree in co-relation 54187. Up to 16485 conditions per place. [2023-12-05 21:04:53,403 INFO L140 encePairwiseOnDemand]: 200/202 looper letters, 120 selfloop transitions, 1 changer transitions 0/234 dead transitions. [2023-12-05 21:04:53,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 234 transitions, 1005 flow [2023-12-05 21:04:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:04:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:04:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-12-05 21:04:53,406 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6749174917491749 [2023-12-05 21:04:53,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-12-05 21:04:53,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-12-05 21:04:53,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:04:53,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-12-05 21:04:53,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2023-12-05 21:04:53,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-12-05 21:04:53,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-12-05 21:04:53,412 INFO L308 CegarLoopForPetriNet]: 192 programPoint places, -21 predicate places. [2023-12-05 21:04:53,412 INFO L500 AbstractCegarLoop]: Abstraction has has 171 places, 234 transitions, 1005 flow [2023-12-05 21:04:53,412 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2023-12-05 21:04:53,412 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:04:53,412 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] [2023-12-05 21:04:53,412 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:04:53,412 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-12-05 21:04:53,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:04:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash -572337205, now seen corresponding path program 1 times [2023-12-05 21:04:53,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:04:53,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522364701] [2023-12-05 21:04:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:04:53,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:04:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:04:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:04:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:04:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522364701] [2023-12-05 21:04:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522364701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:04:53,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:04:53,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:04:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042290501] [2023-12-05 21:04:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:04:53,540 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:04:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:04:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:04:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:04:53,542 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 202 [2023-12-05 21:04:53,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 234 transitions, 1005 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2023-12-05 21:04:53,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:04:53,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 202 [2023-12-05 21:04:53,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:04:57,624 INFO L124 PetriNetUnfolderBase]: 17917/38475 cut-off events. [2023-12-05 21:04:57,625 INFO L125 PetriNetUnfolderBase]: For 12086/12791 co-relation queries the response was YES. [2023-12-05 21:04:57,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115047 conditions, 38475 events. 17917/38475 cut-off events. For 12086/12791 co-relation queries the response was YES. Maximal size of possible extension queue 1523. Compared 418879 event pairs, 3656 based on Foata normal form. 750/26635 useless extension candidates. Maximal degree in co-relation 109015. Up to 24546 conditions per place. [2023-12-05 21:04:58,059 INFO L140 encePairwiseOnDemand]: 187/202 looper letters, 243 selfloop transitions, 18 changer transitions 0/349 dead transitions. [2023-12-05 21:04:58,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 349 transitions, 2183 flow [2023-12-05 21:04:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:04:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:04:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-12-05 21:04:58,061 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.735973597359736 [2023-12-05 21:04:58,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-12-05 21:04:58,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-12-05 21:04:58,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:04:58,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-12-05 21:04:58,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2023-12-05 21:04:58,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-12-05 21:04:58,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-12-05 21:04:58,065 INFO L308 CegarLoopForPetriNet]: 192 programPoint places, -19 predicate places. [2023-12-05 21:04:58,065 INFO L500 AbstractCegarLoop]: Abstraction has has 173 places, 349 transitions, 2183 flow [2023-12-05 21:04:58,066 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2023-12-05 21:04:58,066 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:04:58,066 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] [2023-12-05 21:04:58,066 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:04:58,066 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-12-05 21:04:58,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:04:58,067 INFO L85 PathProgramCache]: Analyzing trace with hash -572337204, now seen corresponding path program 1 times [2023-12-05 21:04:58,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:04:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924669407] [2023-12-05 21:04:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:04:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:04:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:04:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:04:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:04:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924669407] [2023-12-05 21:04:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924669407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:04:58,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:04:58,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:04:58,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497698167] [2023-12-05 21:04:58,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:04:58,213 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:04:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:04:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:04:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:04:58,215 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 202 [2023-12-05 21:04:58,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 349 transitions, 2183 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2023-12-05 21:04:58,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:04:58,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 202 [2023-12-05 21:04:58,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:05:02,240 INFO L124 PetriNetUnfolderBase]: 15032/33189 cut-off events. [2023-12-05 21:05:02,241 INFO L125 PetriNetUnfolderBase]: For 18805/20274 co-relation queries the response was YES. [2023-12-05 21:05:02,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120903 conditions, 33189 events. 15032/33189 cut-off events. For 18805/20274 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 353780 event pairs, 2660 based on Foata normal form. 1404/24182 useless extension candidates. Maximal degree in co-relation 112788. Up to 19917 conditions per place. [2023-12-05 21:05:02,573 INFO L140 encePairwiseOnDemand]: 186/202 looper letters, 312 selfloop transitions, 19 changer transitions 0/413 dead transitions. [2023-12-05 21:05:02,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 413 transitions, 3311 flow [2023-12-05 21:05:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:05:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:05:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-12-05 21:05:02,576 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.698019801980198 [2023-12-05 21:05:02,576 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-12-05 21:05:02,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-12-05 21:05:02,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:05:02,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-12-05 21:05:02,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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) [2023-12-05 21:05:02,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 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) [2023-12-05 21:05:02,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 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) [2023-12-05 21:05:02,581 INFO L308 CegarLoopForPetriNet]: 192 programPoint places, -22 predicate places. [2023-12-05 21:05:02,581 INFO L500 AbstractCegarLoop]: Abstraction has has 170 places, 413 transitions, 3311 flow [2023-12-05 21:05:02,581 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2023-12-05 21:05:02,581 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:02,581 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] [2023-12-05 21:05:02,581 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:05:02,582 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-12-05 21:05:02,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:02,582 INFO L85 PathProgramCache]: Analyzing trace with hash 41529835, now seen corresponding path program 1 times [2023-12-05 21:05:02,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:02,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732142981] [2023-12-05 21:05:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:02,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:05:02,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-05 21:05:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:05:02,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-05 21:05:02,604 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (86 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 87 remaining) [2023-12-05 21:05:02,605 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (77 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (72 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 87 remaining) [2023-12-05 21:05:02,606 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 87 remaining) [2023-12-05 21:05:02,607 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (47 of 87 remaining) [2023-12-05 21:05:02,608 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (42 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 87 remaining) [2023-12-05 21:05:02,609 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 87 remaining) [2023-12-05 21:05:02,610 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (19 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 87 remaining) [2023-12-05 21:05:02,611 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (14 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 87 remaining) [2023-12-05 21:05:02,612 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 87 remaining) [2023-12-05 21:05:02,613 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 87 remaining) [2023-12-05 21:05:02,613 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 87 remaining) [2023-12-05 21:05:02,613 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 87 remaining) [2023-12-05 21:05:02,613 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 87 remaining) [2023-12-05 21:05:02,613 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 87 remaining) [2023-12-05 21:05:02,613 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:05:02,613 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-05 21:05:02,614 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-05 21:05:02,614 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-05 21:05:02,699 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:05:02,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 288 transitions, 594 flow [2023-12-05 21:05:02,755 INFO L124 PetriNetUnfolderBase]: 25/331 cut-off events. [2023-12-05 21:05:02,755 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-05 21:05:02,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 331 events. 25/331 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1379 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 270. Up to 8 conditions per place. [2023-12-05 21:05:02,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 288 transitions, 594 flow [2023-12-05 21:05:02,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 288 transitions, 594 flow [2023-12-05 21:05:02,772 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:05:02,773 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;@7011ef5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:05:02,773 INFO L363 AbstractCegarLoop]: Starting to check reachability of 115 error locations. [2023-12-05 21:05:02,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:05:02,776 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-12-05 21:05:02,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:05:02,776 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:05:02,776 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:05:02,777 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 112 more)] === [2023-12-05 21:05:02,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:05:02,777 INFO L85 PathProgramCache]: Analyzing trace with hash 474741083, now seen corresponding path program 1 times [2023-12-05 21:05:02,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:05:02,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958303544] [2023-12-05 21:05:02,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:05:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:05:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:05:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:05:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:05:02,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958303544] [2023-12-05 21:05:02,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958303544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:05:02,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:05:02,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:05:02,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690534560] [2023-12-05 21:05:02,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:05:02,802 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:05:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:05:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:05:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:05:02,804 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 288 [2023-12-05 21:05:02,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 288 transitions, 594 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2023-12-05 21:05:02,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:05:02,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 288 [2023-12-05 21:05:02,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand