/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-ext/43_NetBSD_sysmon_power_sliced-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:38:44,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:38:44,891 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 04:38:44,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:38:44,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:38:44,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:38:44,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:38:44,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:38:44,929 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:38:44,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:38:44,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:38:44,934 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:38:44,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:38:44,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:38:44,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:38:44,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:38:44,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:38:44,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:38:44,936 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:38:44,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:38:44,937 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:38:44,937 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:38:44,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:38:44,938 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:38:44,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:38:44,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:38:44,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:38:44,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:38:44,939 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:38:44,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:38:44,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:38:44,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:38:44,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:38:44,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:38:45,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:38:45,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:38:45,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:38:45,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:38:45,187 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:38:45,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2023-11-30 04:38:46,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:38:46,570 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:38:46,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2023-11-30 04:38:46,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e26a7f6c/28e5cbd537ad40b69e0a93f269c2f0d7/FLAG94cfff578 [2023-11-30 04:38:46,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e26a7f6c/28e5cbd537ad40b69e0a93f269c2f0d7 [2023-11-30 04:38:46,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:38:46,600 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:38:46,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:38:46,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:38:46,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:38:46,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:38:46" (1/1) ... [2023-11-30 04:38:46,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4941f872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:46, skipping insertion in model container [2023-11-30 04:38:46,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:38:46" (1/1) ... [2023-11-30 04:38:46,666 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:38:46,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:38:46,977 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:38:47,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:38:47,056 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:38:47,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47 WrapperNode [2023-11-30 04:38:47,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:38:47,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:38:47,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:38:47,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:38:47,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,126 INFO L138 Inliner]: procedures = 174, calls = 76, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 363 [2023-11-30 04:38:47,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:38:47,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:38:47,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:38:47,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:38:47,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,149 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:38:47,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:38:47,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:38:47,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:38:47,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (1/1) ... [2023-11-30 04:38:47,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:38:47,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:38:47,189 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 04:38:47,197 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 04:38:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-30 04:38:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-30 04:38:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:38:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 04:38:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:38:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:38:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:38:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:38:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 04:38:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:38:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:38:47,217 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 04:38:47,325 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:38:47,327 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:38:47,726 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:38:47,774 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:38:47,774 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-30 04:38:47,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:38:47 BoogieIcfgContainer [2023-11-30 04:38:47,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:38:47,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:38:47,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:38:47,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:38:47,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:38:46" (1/3) ... [2023-11-30 04:38:47,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c1fabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:38:47, skipping insertion in model container [2023-11-30 04:38:47,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:38:47" (2/3) ... [2023-11-30 04:38:47,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c1fabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:38:47, skipping insertion in model container [2023-11-30 04:38:47,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:38:47" (3/3) ... [2023-11-30 04:38:47,782 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced-pthread.i [2023-11-30 04:38:47,796 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:38:47,797 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-30 04:38:47,797 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:38:47,899 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:38:47,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 373 transitions, 750 flow [2023-11-30 04:38:48,038 INFO L124 PetriNetUnfolderBase]: 55/386 cut-off events. [2023-11-30 04:38:48,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:38:48,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 386 events. 55/386 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1564 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 342. Up to 10 conditions per place. [2023-11-30 04:38:48,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 373 transitions, 750 flow [2023-11-30 04:38:48,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 322 places, 373 transitions, 750 flow [2023-11-30 04:38:48,065 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:38:48,071 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;@467aed3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:38:48,071 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-30 04:38:48,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:38:48,079 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-11-30 04:38:48,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:38:48,079 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:38:48,080 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] [2023-11-30 04:38:48,080 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:38:48,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:38:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1152961778, now seen corresponding path program 1 times [2023-11-30 04:38:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:38:48,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589263842] [2023-11-30 04:38:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:38:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:38:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:38:48,378 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 04:38:48,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:38:48,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589263842] [2023-11-30 04:38:48,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589263842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:38:48,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:38:48,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:38:48,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440157320] [2023-11-30 04:38:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:38:48,388 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:38:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:38:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:38:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:38:48,417 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 373 [2023-11-30 04:38:48,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 373 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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 04:38:48,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:38:48,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 373 [2023-11-30 04:38:48,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:38:48,576 INFO L124 PetriNetUnfolderBase]: 90/482 cut-off events. [2023-11-30 04:38:48,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:38:48,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 482 events. 90/482 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2285 event pairs, 54 based on Foata normal form. 73/458 useless extension candidates. Maximal degree in co-relation 561. Up to 145 conditions per place. [2023-11-30 04:38:48,581 INFO L140 encePairwiseOnDemand]: 351/373 looper letters, 36 selfloop transitions, 1 changer transitions 0/273 dead transitions. [2023-11-30 04:38:48,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 273 transitions, 624 flow [2023-11-30 04:38:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:38:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:38:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 901 transitions. [2023-11-30 04:38:48,596 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.805183199285076 [2023-11-30 04:38:48,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 901 transitions. [2023-11-30 04:38:48,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 901 transitions. [2023-11-30 04:38:48,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:38:48,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 901 transitions. [2023-11-30 04:38:48,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 300.3333333333333) internal successors, (901), 3 states have internal predecessors, (901), 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 04:38:48,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 04:38:48,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 04:38:48,615 INFO L307 CegarLoopForPetriNet]: 322 programPoint places, -70 predicate places. [2023-11-30 04:38:48,615 INFO L500 AbstractCegarLoop]: Abstraction has has 252 places, 273 transitions, 624 flow [2023-11-30 04:38:48,616 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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 04:38:48,616 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:38:48,616 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] [2023-11-30 04:38:48,617 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:38:48,617 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:38:48,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:38:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1152961777, now seen corresponding path program 1 times [2023-11-30 04:38:48,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:38:48,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271405511] [2023-11-30 04:38:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:38:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:38:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:38:48,784 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 04:38:48,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:38:48,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271405511] [2023-11-30 04:38:48,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271405511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:38:48,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:38:48,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:38:48,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279551349] [2023-11-30 04:38:48,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:38:48,786 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:38:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:38:48,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:38:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:38:48,789 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 373 [2023-11-30 04:38:48,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 273 transitions, 624 flow. Second operand has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 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 04:38:48,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:38:48,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 373 [2023-11-30 04:38:48,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:38:48,894 INFO L124 PetriNetUnfolderBase]: 58/391 cut-off events. [2023-11-30 04:38:48,894 INFO L125 PetriNetUnfolderBase]: For 50/82 co-relation queries the response was YES. [2023-11-30 04:38:48,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 391 events. 58/391 cut-off events. For 50/82 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1648 event pairs, 27 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 498. Up to 87 conditions per place. [2023-11-30 04:38:48,898 INFO L140 encePairwiseOnDemand]: 371/373 looper letters, 34 selfloop transitions, 1 changer transitions 0/272 dead transitions. [2023-11-30 04:38:48,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 272 transitions, 690 flow [2023-11-30 04:38:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:38:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:38:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 882 transitions. [2023-11-30 04:38:48,901 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7882037533512064 [2023-11-30 04:38:48,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 882 transitions. [2023-11-30 04:38:48,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 882 transitions. [2023-11-30 04:38:48,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:38:48,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 882 transitions. [2023-11-30 04:38:48,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 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 04:38:48,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 04:38:48,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 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 04:38:48,907 INFO L307 CegarLoopForPetriNet]: 322 programPoint places, -69 predicate places. [2023-11-30 04:38:48,907 INFO L500 AbstractCegarLoop]: Abstraction has has 253 places, 272 transitions, 690 flow [2023-11-30 04:38:48,908 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 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 04:38:48,908 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:38:48,912 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:38:48,912 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:38:48,912 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:38:48,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:38:48,914 INFO L85 PathProgramCache]: Analyzing trace with hash 243200463, now seen corresponding path program 1 times [2023-11-30 04:38:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:38:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411584144] [2023-11-30 04:38:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:38:48,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:38:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:38:48,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:38:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:38:48,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:38:48,992 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:38:48,993 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-30 04:38:48,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-11-30 04:38:48,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 3 remaining) [2023-11-30 04:38:48,996 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:38:48,996 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-30 04:38:48,998 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:38:48,998 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 04:38:49,082 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:38:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 599 places, 701 transitions, 1412 flow [2023-11-30 04:38:49,269 INFO L124 PetriNetUnfolderBase]: 109/729 cut-off events. [2023-11-30 04:38:49,271 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:38:49,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 729 events. 109/729 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4091 event pairs, 0 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 669. Up to 10 conditions per place. [2023-11-30 04:38:49,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 599 places, 701 transitions, 1412 flow [2023-11-30 04:38:49,308 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 599 places, 701 transitions, 1412 flow [2023-11-30 04:38:49,310 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:38:49,314 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;@467aed3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:38:49,314 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-30 04:38:49,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:38:49,322 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-11-30 04:38:49,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:38:49,323 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:38:49,323 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] [2023-11-30 04:38:49,323 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:38:49,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:38:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1242448949, now seen corresponding path program 1 times [2023-11-30 04:38:49,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:38:49,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008396223] [2023-11-30 04:38:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:38:49,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:38:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:38:49,395 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 04:38:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:38:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008396223] [2023-11-30 04:38:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008396223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:38:49,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:38:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:38:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721339051] [2023-11-30 04:38:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:38:49,397 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:38:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:38:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:38:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:38:49,400 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 532 out of 701 [2023-11-30 04:38:49,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 701 transitions, 1412 flow. Second operand has 3 states, 3 states have (on average 534.6666666666666) internal successors, (1604), 3 states have internal predecessors, (1604), 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 04:38:49,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:38:49,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 532 of 701 [2023-11-30 04:38:49,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:38:51,953 INFO L124 PetriNetUnfolderBase]: 5268/17903 cut-off events. [2023-11-30 04:38:51,953 INFO L125 PetriNetUnfolderBase]: For 759/759 co-relation queries the response was YES. [2023-11-30 04:38:52,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24558 conditions, 17903 events. 5268/17903 cut-off events. For 759/759 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 217001 event pairs, 3834 based on Foata normal form. 3771/18365 useless extension candidates. Maximal degree in co-relation 4123. Up to 6559 conditions per place. [2023-11-30 04:38:52,095 INFO L140 encePairwiseOnDemand]: 661/701 looper letters, 64 selfloop transitions, 1 changer transitions 0/509 dead transitions. [2023-11-30 04:38:52,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 509 transitions, 1158 flow [2023-11-30 04:38:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:38:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:38:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1700 transitions. [2023-11-30 04:38:52,099 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8083689966714218 [2023-11-30 04:38:52,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1700 transitions. [2023-11-30 04:38:52,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1700 transitions. [2023-11-30 04:38:52,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:38:52,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1700 transitions. [2023-11-30 04:38:52,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 566.6666666666666) internal successors, (1700), 3 states have internal predecessors, (1700), 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 04:38:52,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 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 04:38:52,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 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 04:38:52,109 INFO L307 CegarLoopForPetriNet]: 599 programPoint places, -135 predicate places. [2023-11-30 04:38:52,109 INFO L500 AbstractCegarLoop]: Abstraction has has 464 places, 509 transitions, 1158 flow [2023-11-30 04:38:52,110 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.6666666666666) internal successors, (1604), 3 states have internal predecessors, (1604), 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 04:38:52,110 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:38:52,110 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] [2023-11-30 04:38:52,111 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:38:52,111 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:38:52,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:38:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1242448948, now seen corresponding path program 1 times [2023-11-30 04:38:52,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:38:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640246700] [2023-11-30 04:38:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:38:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:38:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:38:52,161 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 04:38:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:38:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640246700] [2023-11-30 04:38:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640246700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:38:52,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:38:52,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:38:52,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573346051] [2023-11-30 04:38:52,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:38:52,163 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:38:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:38:52,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:38:52,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:38:52,165 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 533 out of 701 [2023-11-30 04:38:52,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 509 transitions, 1158 flow. Second operand has 3 states, 3 states have (on average 535.3333333333334) internal successors, (1606), 3 states have internal predecessors, (1606), 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 04:38:52,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:38:52,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 533 of 701 [2023-11-30 04:38:52,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:38:53,727 INFO L124 PetriNetUnfolderBase]: 3447/13589 cut-off events. [2023-11-30 04:38:53,728 INFO L125 PetriNetUnfolderBase]: For 2265/4633 co-relation queries the response was YES. [2023-11-30 04:38:53,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21877 conditions, 13589 events. 3447/13589 cut-off events. For 2265/4633 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 164237 event pairs, 2295 based on Foata normal form. 0/11864 useless extension candidates. Maximal degree in co-relation 3108. Up to 4093 conditions per place. [2023-11-30 04:38:53,832 INFO L140 encePairwiseOnDemand]: 699/701 looper letters, 62 selfloop transitions, 1 changer transitions 0/508 dead transitions. [2023-11-30 04:38:53,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 508 transitions, 1280 flow [2023-11-30 04:38:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:38:53,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:38:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1663 transitions. [2023-11-30 04:38:53,837 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7907750832144556 [2023-11-30 04:38:53,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1663 transitions. [2023-11-30 04:38:53,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1663 transitions. [2023-11-30 04:38:53,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:38:53,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1663 transitions. [2023-11-30 04:38:53,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 554.3333333333334) internal successors, (1663), 3 states have internal predecessors, (1663), 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 04:38:53,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 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 04:38:53,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 701.0) internal successors, (2804), 4 states have internal predecessors, (2804), 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 04:38:53,846 INFO L307 CegarLoopForPetriNet]: 599 programPoint places, -134 predicate places. [2023-11-30 04:38:53,847 INFO L500 AbstractCegarLoop]: Abstraction has has 465 places, 508 transitions, 1280 flow [2023-11-30 04:38:53,848 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 535.3333333333334) internal successors, (1606), 3 states have internal predecessors, (1606), 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 04:38:53,848 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:38:53,848 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:38:53,848 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:38:53,848 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:38:53,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:38:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash 183058065, now seen corresponding path program 1 times [2023-11-30 04:38:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:38:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068873182] [2023-11-30 04:38:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:38:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:38:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:38:53,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:38:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:38:54,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:38:54,012 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:38:54,013 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-30 04:38:54,016 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-11-30 04:38:54,016 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 3 remaining) [2023-11-30 04:38:54,016 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:38:54,016 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-30 04:38:54,017 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:38:54,017 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 04:38:54,099 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:38:54,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 876 places, 1029 transitions, 2076 flow [2023-11-30 04:38:54,470 INFO L124 PetriNetUnfolderBase]: 163/1072 cut-off events. [2023-11-30 04:38:54,470 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 04:38:54,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 1072 events. 163/1072 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6843 event pairs, 0 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 996. Up to 10 conditions per place. [2023-11-30 04:38:54,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 876 places, 1029 transitions, 2076 flow [2023-11-30 04:38:54,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 876 places, 1029 transitions, 2076 flow [2023-11-30 04:38:54,556 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:38:54,558 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;@467aed3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:38:54,558 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-30 04:38:54,561 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:38:54,561 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-11-30 04:38:54,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:38:54,561 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:38:54,561 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] [2023-11-30 04:38:54,561 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:38:54,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:38:54,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2145798704, now seen corresponding path program 1 times [2023-11-30 04:38:54,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:38:54,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378551646] [2023-11-30 04:38:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:38:54,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:38:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:38:54,603 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 04:38:54,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:38:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378551646] [2023-11-30 04:38:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378551646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:38:54,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:38:54,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:38:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545447982] [2023-11-30 04:38:54,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:38:54,604 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:38:54,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:38:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:38:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:38:54,608 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 783 out of 1029 [2023-11-30 04:38:54,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 876 places, 1029 transitions, 2076 flow. Second operand has 3 states, 3 states have (on average 785.6666666666666) internal successors, (2357), 3 states have internal predecessors, (2357), 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 04:38:54,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:38:54,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 783 of 1029 [2023-11-30 04:38:54,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:40:20,400 INFO L124 PetriNetUnfolderBase]: 224454/640562 cut-off events. [2023-11-30 04:40:20,400 INFO L125 PetriNetUnfolderBase]: For 61596/61596 co-relation queries the response was YES. [2023-11-30 04:40:26,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898208 conditions, 640562 events. 224454/640562 cut-off events. For 61596/61596 co-relation queries the response was YES. Maximal size of possible extension queue 27194. Compared 11354329 event pairs, 173178 based on Foata normal form. 155768/691794 useless extension candidates. Maximal degree in co-relation 24549. Up to 254413 conditions per place. [2023-11-30 04:40:30,957 INFO L140 encePairwiseOnDemand]: 971/1029 looper letters, 92 selfloop transitions, 1 changer transitions 0/745 dead transitions. [2023-11-30 04:40:30,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 745 transitions, 1694 flow [2023-11-30 04:40:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:40:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:40:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2499 transitions. [2023-11-30 04:40:30,965 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2023-11-30 04:40:30,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2499 transitions. [2023-11-30 04:40:30,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2499 transitions. [2023-11-30 04:40:30,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:40:30,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2499 transitions. [2023-11-30 04:40:30,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 833.0) internal successors, (2499), 3 states have internal predecessors, (2499), 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 04:40:30,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1029.0) internal successors, (4116), 4 states have internal predecessors, (4116), 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 04:40:30,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1029.0) internal successors, (4116), 4 states have internal predecessors, (4116), 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 04:40:30,980 INFO L307 CegarLoopForPetriNet]: 876 programPoint places, -200 predicate places. [2023-11-30 04:40:30,981 INFO L500 AbstractCegarLoop]: Abstraction has has 676 places, 745 transitions, 1694 flow [2023-11-30 04:40:30,982 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 785.6666666666666) internal successors, (2357), 3 states have internal predecessors, (2357), 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 04:40:30,982 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:40:30,982 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] [2023-11-30 04:40:30,982 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:40:30,982 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:40:30,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:40:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2145798703, now seen corresponding path program 1 times [2023-11-30 04:40:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:40:30,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797697247] [2023-11-30 04:40:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:40:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:40:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:40:31,078 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 04:40:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:40:31,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797697247] [2023-11-30 04:40:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797697247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:40:31,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:40:31,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:40:31,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932623251] [2023-11-30 04:40:31,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:40:31,079 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:40:31,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:40:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:40:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:40:31,082 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 784 out of 1029 [2023-11-30 04:40:31,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 745 transitions, 1694 flow. Second operand has 3 states, 3 states have (on average 786.3333333333334) internal successors, (2359), 3 states have internal predecessors, (2359), 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 04:40:31,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:40:31,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 784 of 1029 [2023-11-30 04:40:31,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:10,830 INFO L124 PetriNetUnfolderBase]: 147618/471211 cut-off events. [2023-11-30 04:42:10,830 INFO L125 PetriNetUnfolderBase]: For 106921/182941 co-relation queries the response was YES. [2023-11-30 04:42:18,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798024 conditions, 471211 events. 147618/471211 cut-off events. For 106921/182941 co-relation queries the response was YES. Maximal size of possible extension queue 18981. Compared 8484404 event pairs, 108135 based on Foata normal form. 0/414969 useless extension candidates. Maximal degree in co-relation 21861. Up to 161787 conditions per place.