/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/bigshot_s.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:00:27,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:00:27,983 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 [2023-11-30 04:00:28,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:00:28,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:00:28,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:00:28,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:00:28,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:00:28,016 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:00:28,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:00:28,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:00:28,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:00:28,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:00:28,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:00:28,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:00:28,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:00:28,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:00:28,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:00:28,022 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:00:28,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:00:28,023 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:00:28,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:00:28,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:00:28,024 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:00:28,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:00:28,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:00:28,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:00:28,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:00:28,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:00:28,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:00:28,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:00:28,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:00:28,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:00:28,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:00:28,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:00:28,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:00:28,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:00:28,257 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:00:28,258 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:00:28,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i [2023-11-30 04:00:29,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:00:29,643 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:00:29,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i [2023-11-30 04:00:29,664 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b685fc37f/b4376f40b72f4b1399e53072c6c115e9/FLAGdc8df8ab5 [2023-11-30 04:00:29,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b685fc37f/b4376f40b72f4b1399e53072c6c115e9 [2023-11-30 04:00:29,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:00:29,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:00:29,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:00:29,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:00:29,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:00:29,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:00:29" (1/1) ... [2023-11-30 04:00:29,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@910b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:29, skipping insertion in model container [2023-11-30 04:00:29,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:00:29" (1/1) ... [2023-11-30 04:00:29,746 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:00:30,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:00:30,133 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:00:30,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:00:30,247 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:00:30,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30 WrapperNode [2023-11-30 04:00:30,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:00:30,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:00:30,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:00:30,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:00:30,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,286 INFO L138 Inliner]: procedures = 323, calls = 34, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2023-11-30 04:00:30,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:00:30,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:00:30,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:00:30,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:00:30,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:00:30,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:00:30,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:00:30,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:00:30,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (1/1) ... [2023-11-30 04:00:30,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:00:30,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:00:30,421 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) [2023-11-30 04:00:30,448 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 [2023-11-30 04:00:30,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:00:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:00:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-30 04:00:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:00:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 04:00:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 04:00:30,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 04:00:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 04:00:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:00:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 04:00:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:00:30,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:00:30,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:00:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:00:30,459 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 04:00:30,608 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:00:30,613 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:00:30,873 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:00:30,885 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:00:30,885 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-30 04:00:30,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:00:30 BoogieIcfgContainer [2023-11-30 04:00:30,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:00:30,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:00:30,888 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:00:30,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:00:30,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:00:29" (1/3) ... [2023-11-30 04:00:30,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd9e317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:00:30, skipping insertion in model container [2023-11-30 04:00:30,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:30" (2/3) ... [2023-11-30 04:00:30,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd9e317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:00:30, skipping insertion in model container [2023-11-30 04:00:30,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:00:30" (3/3) ... [2023-11-30 04:00:30,893 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2023-11-30 04:00:30,911 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:00:30,911 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 04:00:30,912 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:00:30,967 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 04:00:30,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 115 transitions, 244 flow [2023-11-30 04:00:31,031 INFO L124 PetriNetUnfolderBase]: 6/113 cut-off events. [2023-11-30 04:00:31,032 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:00:31,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 6/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 156 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2023-11-30 04:00:31,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 115 transitions, 244 flow [2023-11-30 04:00:31,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 86 transitions, 184 flow [2023-11-30 04:00:31,053 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:00:31,070 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;@3f3da93b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:00:31,070 INFO L363 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-30 04:00:31,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:00:31,081 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-11-30 04:00:31,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:00:31,081 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:31,082 INFO L232 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] [2023-11-30 04:00:31,082 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:31,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash 358208312, now seen corresponding path program 1 times [2023-11-30 04:00:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:31,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649614706] [2023-11-30 04:00:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:31,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:31,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:31,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649614706] [2023-11-30 04:00:31,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649614706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:31,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:31,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:00:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822939951] [2023-11-30 04:00:31,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:31,469 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:00:31,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:00:31,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:00:31,501 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 115 [2023-11-30 04:00:31,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2023-11-30 04:00:31,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:31,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 115 [2023-11-30 04:00:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:31,585 INFO L124 PetriNetUnfolderBase]: 16/119 cut-off events. [2023-11-30 04:00:31,585 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-11-30 04:00:31,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 119 events. 16/119 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 252 event pairs, 14 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 111. Up to 50 conditions per place. [2023-11-30 04:00:31,588 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 26 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2023-11-30 04:00:31,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 232 flow [2023-11-30 04:00:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:00:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:00:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-30 04:00:31,605 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7565217391304347 [2023-11-30 04:00:31,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-30 04:00:31,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-30 04:00:31,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:31,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-30 04:00:31,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2023-11-30 04:00:31,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:31,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:31,619 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-11-30 04:00:31,619 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 232 flow [2023-11-30 04:00:31,619 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2023-11-30 04:00:31,619 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:31,620 INFO L232 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] [2023-11-30 04:00:31,620 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:00:31,620 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:31,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash 358208313, now seen corresponding path program 1 times [2023-11-30 04:00:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033823118] [2023-11-30 04:00:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:31,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033823118] [2023-11-30 04:00:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033823118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:00:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069098566] [2023-11-30 04:00:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:31,785 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:00:31,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:31,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:00:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:00:31,788 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2023-11-30 04:00:31,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-30 04:00:31,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:31,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2023-11-30 04:00:31,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:31,881 INFO L124 PetriNetUnfolderBase]: 31/159 cut-off events. [2023-11-30 04:00:31,881 INFO L125 PetriNetUnfolderBase]: For 48/72 co-relation queries the response was YES. [2023-11-30 04:00:31,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 159 events. 31/159 cut-off events. For 48/72 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 449 event pairs, 23 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 220. Up to 58 conditions per place. [2023-11-30 04:00:31,907 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 24 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-30 04:00:31,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 284 flow [2023-11-30 04:00:31,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:00:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:00:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-11-30 04:00:31,910 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7681159420289855 [2023-11-30 04:00:31,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-11-30 04:00:31,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-11-30 04:00:31,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:31,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-11-30 04:00:31,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2023-11-30 04:00:31,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:31,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:31,914 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 1 predicate places. [2023-11-30 04:00:31,914 INFO L500 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 284 flow [2023-11-30 04:00:31,914 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-30 04:00:31,915 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:31,915 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:31,915 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:00:31,915 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:31,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:31,916 INFO L85 PathProgramCache]: Analyzing trace with hash 290704790, now seen corresponding path program 1 times [2023-11-30 04:00:31,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:31,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718579037] [2023-11-30 04:00:31,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:31,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718579037] [2023-11-30 04:00:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718579037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:32,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:32,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:00:32,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022692535] [2023-11-30 04:00:32,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:32,079 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:00:32,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:32,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:00:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:00:32,081 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2023-11-30 04:00:32,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2023-11-30 04:00:32,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:32,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2023-11-30 04:00:32,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:32,178 INFO L124 PetriNetUnfolderBase]: 43/193 cut-off events. [2023-11-30 04:00:32,179 INFO L125 PetriNetUnfolderBase]: For 100/131 co-relation queries the response was YES. [2023-11-30 04:00:32,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 193 events. 43/193 cut-off events. For 100/131 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 676 event pairs, 33 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 365. Up to 103 conditions per place. [2023-11-30 04:00:32,187 INFO L140 encePairwiseOnDemand]: 113/115 looper letters, 33 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2023-11-30 04:00:32,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 346 flow [2023-11-30 04:00:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:00:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:00:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-11-30 04:00:32,190 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6985507246376812 [2023-11-30 04:00:32,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-11-30 04:00:32,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-11-30 04:00:32,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:32,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-11-30 04:00:32,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2023-11-30 04:00:32,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:32,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:32,196 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-30 04:00:32,197 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 346 flow [2023-11-30 04:00:32,197 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 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) [2023-11-30 04:00:32,197 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:32,197 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:32,197 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:00:32,197 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:32,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 547186235, now seen corresponding path program 1 times [2023-11-30 04:00:32,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:32,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771580731] [2023-11-30 04:00:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:32,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:32,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771580731] [2023-11-30 04:00:32,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771580731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:32,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:32,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:00:32,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692393941] [2023-11-30 04:00:32,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:32,346 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:00:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:00:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:00:32,351 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 115 [2023-11-30 04:00:32,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-30 04:00:32,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:32,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 115 [2023-11-30 04:00:32,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:32,409 INFO L124 PetriNetUnfolderBase]: 30/156 cut-off events. [2023-11-30 04:00:32,409 INFO L125 PetriNetUnfolderBase]: For 198/232 co-relation queries the response was YES. [2023-11-30 04:00:32,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 156 events. 30/156 cut-off events. For 198/232 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 447 event pairs, 22 based on Foata normal form. 13/149 useless extension candidates. Maximal degree in co-relation 327. Up to 77 conditions per place. [2023-11-30 04:00:32,411 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 25 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-11-30 04:00:32,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 80 transitions, 386 flow [2023-11-30 04:00:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:00:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:00:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-11-30 04:00:32,413 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7478260869565218 [2023-11-30 04:00:32,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-11-30 04:00:32,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-11-30 04:00:32,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:32,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-11-30 04:00:32,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2023-11-30 04:00:32,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:32,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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) [2023-11-30 04:00:32,417 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-30 04:00:32,417 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 386 flow [2023-11-30 04:00:32,418 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-30 04:00:32,418 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:32,418 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:32,418 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:00:32,418 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:32,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash 195691474, now seen corresponding path program 1 times [2023-11-30 04:00:32,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:32,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206443487] [2023-11-30 04:00:32,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:32,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:32,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206443487] [2023-11-30 04:00:32,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206443487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:32,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:32,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:00:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195667534] [2023-11-30 04:00:32,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:32,599 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:00:32,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:00:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:00:32,600 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 115 [2023-11-30 04:00:32,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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) [2023-11-30 04:00:32,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:32,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 115 [2023-11-30 04:00:32,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:32,702 INFO L124 PetriNetUnfolderBase]: 19/121 cut-off events. [2023-11-30 04:00:32,702 INFO L125 PetriNetUnfolderBase]: For 264/291 co-relation queries the response was YES. [2023-11-30 04:00:32,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 121 events. 19/121 cut-off events. For 264/291 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 11 based on Foata normal form. 15/123 useless extension candidates. Maximal degree in co-relation 258. Up to 53 conditions per place. [2023-11-30 04:00:32,703 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 30 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-11-30 04:00:32,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 79 transitions, 446 flow [2023-11-30 04:00:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:00:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:00:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-11-30 04:00:32,705 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2023-11-30 04:00:32,705 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-11-30 04:00:32,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-11-30 04:00:32,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:32,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-11-30 04:00:32,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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) [2023-11-30 04:00:32,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2023-11-30 04:00:32,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 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) [2023-11-30 04:00:32,710 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2023-11-30 04:00:32,710 INFO L500 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 446 flow [2023-11-30 04:00:32,710 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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) [2023-11-30 04:00:32,710 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:32,710 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:32,711 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:00:32,711 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:32,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1434829439, now seen corresponding path program 1 times [2023-11-30 04:00:32,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:32,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215419406] [2023-11-30 04:00:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:32,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:33,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215419406] [2023-11-30 04:00:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215419406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:33,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:00:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90370133] [2023-11-30 04:00:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:33,007 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:00:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:00:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:00:33,008 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2023-11-30 04:00:33,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 446 flow. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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) [2023-11-30 04:00:33,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:33,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2023-11-30 04:00:33,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:33,077 INFO L124 PetriNetUnfolderBase]: 17/115 cut-off events. [2023-11-30 04:00:33,078 INFO L125 PetriNetUnfolderBase]: For 343/366 co-relation queries the response was YES. [2023-11-30 04:00:33,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 115 events. 17/115 cut-off events. For 343/366 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 226 event pairs, 2 based on Foata normal form. 3/109 useless extension candidates. Maximal degree in co-relation 256. Up to 46 conditions per place. [2023-11-30 04:00:33,081 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 25 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-11-30 04:00:33,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 78 transitions, 496 flow [2023-11-30 04:00:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:00:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:00:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-11-30 04:00:33,082 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6504347826086957 [2023-11-30 04:00:33,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-11-30 04:00:33,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-11-30 04:00:33,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:33,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-11-30 04:00:33,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2023-11-30 04:00:33,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2023-11-30 04:00:33,087 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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) [2023-11-30 04:00:33,089 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-11-30 04:00:33,089 INFO L500 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 496 flow [2023-11-30 04:00:33,090 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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) [2023-11-30 04:00:33,090 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:33,090 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:33,090 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:00:33,090 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:33,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash -811597353, now seen corresponding path program 1 times [2023-11-30 04:00:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:33,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765572813] [2023-11-30 04:00:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:33,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:33,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765572813] [2023-11-30 04:00:33,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765572813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:33,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:33,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-30 04:00:33,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158014460] [2023-11-30 04:00:33,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:33,587 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:00:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:00:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:00:33,589 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 115 [2023-11-30 04:00:33,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 496 flow. Second operand has 10 states, 10 states have (on average 60.2) internal successors, (602), 10 states have internal predecessors, (602), 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) [2023-11-30 04:00:33,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:33,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 115 [2023-11-30 04:00:33,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:33,734 INFO L124 PetriNetUnfolderBase]: 32/156 cut-off events. [2023-11-30 04:00:33,735 INFO L125 PetriNetUnfolderBase]: For 595/626 co-relation queries the response was YES. [2023-11-30 04:00:33,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 156 events. 32/156 cut-off events. For 595/626 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 404 event pairs, 2 based on Foata normal form. 3/144 useless extension candidates. Maximal degree in co-relation 519. Up to 73 conditions per place. [2023-11-30 04:00:33,736 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 43 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2023-11-30 04:00:33,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 89 transitions, 694 flow [2023-11-30 04:00:33,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 04:00:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 04:00:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 457 transitions. [2023-11-30 04:00:33,738 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5677018633540373 [2023-11-30 04:00:33,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 457 transitions. [2023-11-30 04:00:33,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 457 transitions. [2023-11-30 04:00:33,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:33,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 457 transitions. [2023-11-30 04:00:33,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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) [2023-11-30 04:00:33,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 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) [2023-11-30 04:00:33,741 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 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) [2023-11-30 04:00:33,742 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 11 predicate places. [2023-11-30 04:00:33,742 INFO L500 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 694 flow [2023-11-30 04:00:33,742 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 60.2) internal successors, (602), 10 states have internal predecessors, (602), 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) [2023-11-30 04:00:33,742 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:33,743 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:33,743 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:00:33,743 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:33,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:33,743 INFO L85 PathProgramCache]: Analyzing trace with hash 972999484, now seen corresponding path program 1 times [2023-11-30 04:00:33,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:33,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697720064] [2023-11-30 04:00:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:33,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:33,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:33,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697720064] [2023-11-30 04:00:33,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697720064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:33,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:33,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:00:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979575347] [2023-11-30 04:00:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:33,835 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:00:33,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:00:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:00:33,837 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2023-11-30 04:00:33,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 694 flow. Second operand has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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) [2023-11-30 04:00:33,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:33,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2023-11-30 04:00:33,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:33,922 INFO L124 PetriNetUnfolderBase]: 35/158 cut-off events. [2023-11-30 04:00:33,922 INFO L125 PetriNetUnfolderBase]: For 849/873 co-relation queries the response was YES. [2023-11-30 04:00:33,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 158 events. 35/158 cut-off events. For 849/873 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 397 event pairs, 3 based on Foata normal form. 5/149 useless extension candidates. Maximal degree in co-relation 573. Up to 70 conditions per place. [2023-11-30 04:00:33,924 INFO L140 encePairwiseOnDemand]: 108/115 looper letters, 37 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2023-11-30 04:00:33,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 87 transitions, 752 flow [2023-11-30 04:00:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:00:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:00:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 451 transitions. [2023-11-30 04:00:33,926 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6536231884057971 [2023-11-30 04:00:33,926 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 451 transitions. [2023-11-30 04:00:33,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 451 transitions. [2023-11-30 04:00:33,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:33,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 451 transitions. [2023-11-30 04:00:33,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 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) [2023-11-30 04:00:33,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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) [2023-11-30 04:00:33,932 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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) [2023-11-30 04:00:33,934 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 14 predicate places. [2023-11-30 04:00:33,934 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 752 flow [2023-11-30 04:00:33,935 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 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) [2023-11-30 04:00:33,935 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:33,935 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:33,935 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:00:33,935 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:33,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1963236934, now seen corresponding path program 1 times [2023-11-30 04:00:33,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:33,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506582694] [2023-11-30 04:00:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506582694] [2023-11-30 04:00:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506582694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:34,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:00:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038106286] [2023-11-30 04:00:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:34,094 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:00:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:34,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:00:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:00:34,096 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 115 [2023-11-30 04:00:34,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 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) [2023-11-30 04:00:34,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:34,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 115 [2023-11-30 04:00:34,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:34,227 INFO L124 PetriNetUnfolderBase]: 34/154 cut-off events. [2023-11-30 04:00:34,227 INFO L125 PetriNetUnfolderBase]: For 928/946 co-relation queries the response was YES. [2023-11-30 04:00:34,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 154 events. 34/154 cut-off events. For 928/946 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 377 event pairs, 3 based on Foata normal form. 3/145 useless extension candidates. Maximal degree in co-relation 626. Up to 66 conditions per place. [2023-11-30 04:00:34,229 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 34 selfloop transitions, 6 changer transitions 14/86 dead transitions. [2023-11-30 04:00:34,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 86 transitions, 828 flow [2023-11-30 04:00:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 04:00:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 04:00:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 526 transitions. [2023-11-30 04:00:34,231 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.653416149068323 [2023-11-30 04:00:34,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 526 transitions. [2023-11-30 04:00:34,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 526 transitions. [2023-11-30 04:00:34,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:34,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 526 transitions. [2023-11-30 04:00:34,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2023-11-30 04:00:34,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 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) [2023-11-30 04:00:34,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 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) [2023-11-30 04:00:34,235 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 19 predicate places. [2023-11-30 04:00:34,235 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 86 transitions, 828 flow [2023-11-30 04:00:34,236 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 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) [2023-11-30 04:00:34,236 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:34,236 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:34,236 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 04:00:34,236 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:34,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1529697212, now seen corresponding path program 1 times [2023-11-30 04:00:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:34,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985080171] [2023-11-30 04:00:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985080171] [2023-11-30 04:00:34,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985080171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:00:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174931940] [2023-11-30 04:00:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:34,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:00:34,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:00:34,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:00:34,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 04:00:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:34,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-30 04:00:34,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:00:34,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:00:34,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:34,911 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-30 04:00:34,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-30 04:00:34,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:00:34,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:35,027 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-30 04:00:35,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-30 04:00:35,142 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-30 04:00:35,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-30 04:00:35,162 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-30 04:00:35,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-30 04:00:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:35,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:00:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174931940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:00:35,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:00:35,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 24 [2023-11-30 04:00:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912080102] [2023-11-30 04:00:35,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:00:35,812 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-30 04:00:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-30 04:00:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2023-11-30 04:00:35,815 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2023-11-30 04:00:35,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 86 transitions, 828 flow. Second operand has 25 states, 25 states have (on average 58.36) internal successors, (1459), 25 states have internal predecessors, (1459), 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) [2023-11-30 04:00:35,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:35,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2023-11-30 04:00:35,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:36,303 INFO L124 PetriNetUnfolderBase]: 57/227 cut-off events. [2023-11-30 04:00:36,303 INFO L125 PetriNetUnfolderBase]: For 1460/1484 co-relation queries the response was YES. [2023-11-30 04:00:36,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 227 events. 57/227 cut-off events. For 1460/1484 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 621 event pairs, 3 based on Foata normal form. 8/215 useless extension candidates. Maximal degree in co-relation 1225. Up to 111 conditions per place. [2023-11-30 04:00:36,305 INFO L140 encePairwiseOnDemand]: 101/115 looper letters, 51 selfloop transitions, 13 changer transitions 16/108 dead transitions. [2023-11-30 04:00:36,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 108 transitions, 1280 flow [2023-11-30 04:00:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 04:00:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 04:00:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 736 transitions. [2023-11-30 04:00:36,308 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-30 04:00:36,308 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 736 transitions. [2023-11-30 04:00:36,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 736 transitions. [2023-11-30 04:00:36,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:36,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 736 transitions. [2023-11-30 04:00:36,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 61.333333333333336) internal successors, (736), 12 states have internal predecessors, (736), 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) [2023-11-30 04:00:36,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 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) [2023-11-30 04:00:36,313 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 115.0) internal successors, (1495), 13 states have internal predecessors, (1495), 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) [2023-11-30 04:00:36,314 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 29 predicate places. [2023-11-30 04:00:36,314 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 1280 flow [2023-11-30 04:00:36,315 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.36) internal successors, (1459), 25 states have internal predecessors, (1459), 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) [2023-11-30 04:00:36,315 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:36,315 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:36,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 04:00:36,520 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-30 04:00:36,521 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:36,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1160195673, now seen corresponding path program 1 times [2023-11-30 04:00:36,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:36,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532230824] [2023-11-30 04:00:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:36,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:36,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:36,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532230824] [2023-11-30 04:00:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532230824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:00:36,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585519544] [2023-11-30 04:00:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:36,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:00:36,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:00:36,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:00:36,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 04:00:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:36,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-30 04:00:36,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:00:36,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 04:00:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:36,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:00:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585519544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:00:37,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:00:37,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-30 04:00:37,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168456426] [2023-11-30 04:00:37,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:00:37,148 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-30 04:00:37,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:37,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-30 04:00:37,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-30 04:00:37,150 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 115 [2023-11-30 04:00:37,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 1280 flow. Second operand has 17 states, 17 states have (on average 71.88235294117646) internal successors, (1222), 17 states have internal predecessors, (1222), 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) [2023-11-30 04:00:37,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:37,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 115 [2023-11-30 04:00:37,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:37,474 INFO L124 PetriNetUnfolderBase]: 57/227 cut-off events. [2023-11-30 04:00:37,474 INFO L125 PetriNetUnfolderBase]: For 1700/1730 co-relation queries the response was YES. [2023-11-30 04:00:37,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 227 events. 57/227 cut-off events. For 1700/1730 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 581 event pairs, 3 based on Foata normal form. 2/213 useless extension candidates. Maximal degree in co-relation 1364. Up to 111 conditions per place. [2023-11-30 04:00:37,477 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 48 selfloop transitions, 10 changer transitions 18/111 dead transitions. [2023-11-30 04:00:37,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 111 transitions, 1458 flow [2023-11-30 04:00:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-30 04:00:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-30 04:00:37,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 752 transitions. [2023-11-30 04:00:37,479 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6539130434782608 [2023-11-30 04:00:37,479 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 752 transitions. [2023-11-30 04:00:37,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 752 transitions. [2023-11-30 04:00:37,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:37,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 752 transitions. [2023-11-30 04:00:37,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.2) internal successors, (752), 10 states have internal predecessors, (752), 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) [2023-11-30 04:00:37,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-11-30 04:00:37,484 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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) [2023-11-30 04:00:37,484 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 38 predicate places. [2023-11-30 04:00:37,484 INFO L500 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 1458 flow [2023-11-30 04:00:37,485 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 71.88235294117646) internal successors, (1222), 17 states have internal predecessors, (1222), 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) [2023-11-30 04:00:37,485 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:37,485 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:37,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 04:00:37,691 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-30 04:00:37,691 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:37,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:37,692 INFO L85 PathProgramCache]: Analyzing trace with hash -23310525, now seen corresponding path program 2 times [2023-11-30 04:00:37,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:37,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204532816] [2023-11-30 04:00:37,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:37,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:38,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:38,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204532816] [2023-11-30 04:00:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204532816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:00:38,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782775016] [2023-11-30 04:00:38,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 04:00:38,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:00:38,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:00:38,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:00:38,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-30 04:00:38,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 04:00:38,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 04:00:38,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-30 04:00:38,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:00:38,336 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-30 04:00:38,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-30 04:00:38,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:38,400 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-30 04:00:38,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-30 04:00:38,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:38,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:00:38,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:38,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:00:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:39,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782775016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:00:39,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:00:39,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 31 [2023-11-30 04:00:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619241005] [2023-11-30 04:00:39,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:00:39,530 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-30 04:00:39,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:39,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-30 04:00:39,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2023-11-30 04:00:39,534 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 115 [2023-11-30 04:00:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 1458 flow. Second operand has 32 states, 32 states have (on average 64.25) internal successors, (2056), 32 states have internal predecessors, (2056), 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) [2023-11-30 04:00:39,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:39,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 115 [2023-11-30 04:00:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:40,295 INFO L124 PetriNetUnfolderBase]: 98/358 cut-off events. [2023-11-30 04:00:40,295 INFO L125 PetriNetUnfolderBase]: For 2808/2838 co-relation queries the response was YES. [2023-11-30 04:00:40,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 358 events. 98/358 cut-off events. For 2808/2838 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1021 event pairs, 3 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 2589. Up to 200 conditions per place. [2023-11-30 04:00:40,299 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 88 selfloop transitions, 14 changer transitions 22/155 dead transitions. [2023-11-30 04:00:40,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 155 transitions, 2488 flow [2023-11-30 04:00:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 04:00:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 04:00:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 945 transitions. [2023-11-30 04:00:40,302 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2023-11-30 04:00:40,302 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 945 transitions. [2023-11-30 04:00:40,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 945 transitions. [2023-11-30 04:00:40,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:40,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 945 transitions. [2023-11-30 04:00:40,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 67.5) internal successors, (945), 14 states have internal predecessors, (945), 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) [2023-11-30 04:00:40,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-11-30 04:00:40,307 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2023-11-30 04:00:40,308 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 51 predicate places. [2023-11-30 04:00:40,308 INFO L500 AbstractCegarLoop]: Abstraction has has 141 places, 155 transitions, 2488 flow [2023-11-30 04:00:40,309 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 64.25) internal successors, (2056), 32 states have internal predecessors, (2056), 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) [2023-11-30 04:00:40,309 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:40,309 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:40,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-30 04:00:40,515 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:00:40,518 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:40,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash -361053368, now seen corresponding path program 2 times [2023-11-30 04:00:40,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:40,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423343666] [2023-11-30 04:00:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:40,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:40,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:40,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423343666] [2023-11-30 04:00:40,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423343666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:00:40,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051763223] [2023-11-30 04:00:40,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 04:00:40,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:00:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:00:40,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:00:40,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-30 04:00:40,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 04:00:40,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 04:00:40,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-30 04:00:40,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:00:40,992 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-30 04:00:40,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-30 04:00:40,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:41,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:00:41,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:41,050 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-30 04:00:41,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-30 04:00:41,132 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-30 04:00:41,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-30 04:00:41,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:00:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-30 04:00:41,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:00:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-30 04:00:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051763223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:00:42,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:00:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 22 [2023-11-30 04:00:42,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752681602] [2023-11-30 04:00:42,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:00:42,627 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-30 04:00:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-30 04:00:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-11-30 04:00:42,630 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 115 [2023-11-30 04:00:42,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 155 transitions, 2488 flow. Second operand has 23 states, 23 states have (on average 62.608695652173914) internal successors, (1440), 23 states have internal predecessors, (1440), 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) [2023-11-30 04:00:42,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:42,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 115 [2023-11-30 04:00:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:43,609 INFO L124 PetriNetUnfolderBase]: 94/346 cut-off events. [2023-11-30 04:00:43,609 INFO L125 PetriNetUnfolderBase]: For 3147/3187 co-relation queries the response was YES. [2023-11-30 04:00:43,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 346 events. 94/346 cut-off events. For 3147/3187 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 936 event pairs, 3 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 2697. Up to 188 conditions per place. [2023-11-30 04:00:43,614 INFO L140 encePairwiseOnDemand]: 103/115 looper letters, 80 selfloop transitions, 24 changer transitions 24/157 dead transitions. [2023-11-30 04:00:43,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 157 transitions, 2772 flow [2023-11-30 04:00:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-30 04:00:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-30 04:00:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1260 transitions. [2023-11-30 04:00:43,617 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2023-11-30 04:00:43,617 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1260 transitions. [2023-11-30 04:00:43,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1260 transitions. [2023-11-30 04:00:43,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:43,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1260 transitions. [2023-11-30 04:00:43,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 63.0) internal successors, (1260), 20 states have internal predecessors, (1260), 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) [2023-11-30 04:00:43,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 115.0) internal successors, (2415), 21 states have internal predecessors, (2415), 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) [2023-11-30 04:00:43,625 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 115.0) internal successors, (2415), 21 states have internal predecessors, (2415), 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) [2023-11-30 04:00:43,627 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 69 predicate places. [2023-11-30 04:00:43,627 INFO L500 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 2772 flow [2023-11-30 04:00:43,627 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 62.608695652173914) internal successors, (1440), 23 states have internal predecessors, (1440), 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) [2023-11-30 04:00:43,628 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:43,628 INFO L232 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:43,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-30 04:00:43,839 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:00:43,839 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-11-30 04:00:43,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 940291409, now seen corresponding path program 3 times [2023-11-30 04:00:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270574394] [2023-11-30 04:00:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:44,720 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 23 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:44,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:44,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270574394] [2023-11-30 04:00:44,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270574394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:00:44,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846271070] [2023-11-30 04:00:44,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-30 04:00:44,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:00:44,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:00:44,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:00:44,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-30 04:00:44,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-30 04:00:44,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 04:00:44,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-30 04:00:44,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:00:44,919 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-30 04:00:44,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-30 04:00:44,968 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-30 04:00:44,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-30 04:00:45,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,137 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-30 04:00:45,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-30 04:00:45,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 04:00:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 23 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:45,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:00:46,107 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_271 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_271) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2023-11-30 04:00:46,185 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_271 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_271) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)) 0)) is different from false [2023-11-30 04:00:46,206 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_271 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_271) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2023-11-30 04:00:46,226 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_271 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_271) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)) 0)) is different from false [2023-11-30 04:00:46,392 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_271 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264) c_~v~0.base v_ArrVal_271) 3) 7) 0)) is different from false [2023-11-30 04:00:46,411 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_271 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264) |c_thread1Thread1of1ForFork1_#t~malloc3.base| v_ArrVal_271) 3) 7) 0)) is different from false [2023-11-30 04:00:48,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 486 treesize of output 466 [2023-11-30 04:00:48,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 43 [2023-11-30 04:00:48,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-11-30 04:00:48,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-11-30 04:00:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 23 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 172 not checked. [2023-11-30 04:00:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846271070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:00:49,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:00:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 53 [2023-11-30 04:00:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572922569] [2023-11-30 04:00:49,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:00:49,220 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-30 04:00:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-30 04:00:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1916, Unknown=57, NotChecked=570, Total=2756 [2023-11-30 04:00:49,224 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 115 [2023-11-30 04:00:49,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 157 transitions, 2772 flow. Second operand has 53 states, 53 states have (on average 46.83018867924528) internal successors, (2482), 53 states have internal predecessors, (2482), 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) [2023-11-30 04:00:49,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:49,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 115 [2023-11-30 04:00:49,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:51,218 INFO L124 PetriNetUnfolderBase]: 104/348 cut-off events. [2023-11-30 04:00:51,219 INFO L125 PetriNetUnfolderBase]: For 4676/4720 co-relation queries the response was YES. [2023-11-30 04:00:51,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 348 events. 104/348 cut-off events. For 4676/4720 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1011 event pairs, 3 based on Foata normal form. 2/332 useless extension candidates. Maximal degree in co-relation 3057. Up to 190 conditions per place. [2023-11-30 04:00:51,221 INFO L140 encePairwiseOnDemand]: 100/115 looper letters, 0 selfloop transitions, 0 changer transitions 176/176 dead transitions. [2023-11-30 04:00:51,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 176 transitions, 3270 flow [2023-11-30 04:00:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-30 04:00:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-30 04:00:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1191 transitions. [2023-11-30 04:00:51,225 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4142608695652174 [2023-11-30 04:00:51,225 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1191 transitions. [2023-11-30 04:00:51,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1191 transitions. [2023-11-30 04:00:51,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:51,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1191 transitions. [2023-11-30 04:00:51,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 47.64) internal successors, (1191), 25 states have internal predecessors, (1191), 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) [2023-11-30 04:00:51,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 115.0) internal successors, (2990), 26 states have internal predecessors, (2990), 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) [2023-11-30 04:00:51,233 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 115.0) internal successors, (2990), 26 states have internal predecessors, (2990), 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) [2023-11-30 04:00:51,233 INFO L307 CegarLoopForPetriNet]: 90 programPoint places, 92 predicate places. [2023-11-30 04:00:51,233 INFO L500 AbstractCegarLoop]: Abstraction has has 182 places, 176 transitions, 3270 flow [2023-11-30 04:00:51,234 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 46.83018867924528) internal successors, (2482), 53 states have internal predecessors, (2482), 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) [2023-11-30 04:00:51,240 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bigshot_s.i_BEv2_AllErrorsAtOnce [2023-11-30 04:00:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 24 remaining) [2023-11-30 04:00:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2023-11-30 04:00:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2023-11-30 04:00:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2023-11-30 04:00:51,314 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2023-11-30 04:00:51,314 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2023-11-30 04:00:51,315 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2023-11-30 04:00:51,315 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2023-11-30 04:00:51,315 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 24 remaining) [2023-11-30 04:00:51,316 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 24 remaining) [2023-11-30 04:00:51,317 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2023-11-30 04:00:51,317 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2023-11-30 04:00:51,317 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2023-11-30 04:00:51,317 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2023-11-30 04:00:51,317 INFO L810 garLoopResultBuilder]: Registering result SAFE for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 24 remaining) [2023-11-30 04:00:51,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-30 04:00:51,527 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-30 04:00:51,527 INFO L457 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:00:51,535 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:00:51,535 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:00:51,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:00:51 BasicIcfg [2023-11-30 04:00:51,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:00:51,547 INFO L158 Benchmark]: Toolchain (without parser) took 21863.90ms. Allocated memory was 453.0MB in the beginning and 679.5MB in the end (delta: 226.5MB). Free memory was 397.3MB in the beginning and 488.0MB in the end (delta: -90.7MB). Peak memory consumption was 133.0MB. Max. memory is 16.0GB. [2023-11-30 04:00:51,547 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 331.4MB. Free memory is still 281.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:00:51,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.69ms. Allocated memory is still 453.0MB. Free memory was 397.0MB in the beginning and 364.3MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-11-30 04:00:51,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.25ms. Allocated memory is still 453.0MB. Free memory was 364.3MB in the beginning and 361.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 04:00:51,548 INFO L158 Benchmark]: Boogie Preprocessor took 36.44ms. Allocated memory is still 453.0MB. Free memory was 361.7MB in the beginning and 360.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:00:51,549 INFO L158 Benchmark]: RCFGBuilder took 562.72ms. Allocated memory is still 453.0MB. Free memory was 360.1MB in the beginning and 401.2MB in the end (delta: -41.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.0GB. [2023-11-30 04:00:51,549 INFO L158 Benchmark]: TraceAbstraction took 20654.96ms. Allocated memory was 453.0MB in the beginning and 679.5MB in the end (delta: 226.5MB). Free memory was 400.3MB in the beginning and 488.0MB in the end (delta: -87.7MB). Peak memory consumption was 137.4MB. Max. memory is 16.0GB. [2023-11-30 04:00:51,550 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 331.4MB. Free memory is still 281.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 566.69ms. Allocated memory is still 453.0MB. Free memory was 397.0MB in the beginning and 364.3MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.25ms. Allocated memory is still 453.0MB. Free memory was 364.3MB in the beginning and 361.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.44ms. Allocated memory is still 453.0MB. Free memory was 361.7MB in the beginning and 360.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 562.72ms. Allocated memory is still 453.0MB. Free memory was 360.1MB in the beginning and 401.2MB in the end (delta: -41.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.0GB. * TraceAbstraction took 20654.96ms. Allocated memory was 453.0MB in the beginning and 679.5MB in the end (delta: 226.5MB). Free memory was 400.3MB in the beginning and 488.0MB in the end (delta: -87.7MB). Peak memory consumption was 137.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 147 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.5s, OverallIterations: 14, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2364 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2364 mSDsluCounter, 752 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 780 IncrementalHoareTripleChecker+Unchecked, 565 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4426 IncrementalHoareTripleChecker+Invalid, 5314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 187 mSDtfsCounter, 4426 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 956 GetRequests, 710 SyntacticMatches, 3 SemanticMatches, 243 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1911 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3270occurred in iteration=14, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 1107 NumberOfCodeBlocks, 1075 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1466 ConstructedInterpolants, 192 QuantifiedInterpolants, 18541 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1142 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 181/1098 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:00:51,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...