/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-complex/workstealqueue_mutex-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:53:34,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:53:34,933 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 04:53:34,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:53:34,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:53:34,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:53:34,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:53:34,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:53:34,955 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:53:34,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:53:34,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:53:34,956 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:53:34,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:53:34,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:53:34,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:53:34,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:53:34,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:53:34,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:53:34,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:53:34,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:53:34,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:53:34,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:53:34,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:53:34,960 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:53:34,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:53:34,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:53:34,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:53:34,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:53:34,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:53:34,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:53:34,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:53:34,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:53:34,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:53:34,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:53:35,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:53:35,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:53:35,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:53:35,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:53:35,219 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:53:35,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i [2023-11-30 04:53:36,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:53:36,605 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:53:36,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i [2023-11-30 04:53:36,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc87ab46/5487c55eed644682b206083a6582a125/FLAG491f2a5dd [2023-11-30 04:53:36,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bc87ab46/5487c55eed644682b206083a6582a125 [2023-11-30 04:53:36,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:53:36,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:53:36,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:53:36,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:53:36,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:53:36,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:53:36" (1/1) ... [2023-11-30 04:53:36,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ac6ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:36, skipping insertion in model container [2023-11-30 04:53:36,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:53:36" (1/1) ... [2023-11-30 04:53:36,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:53:37,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:53:37,492 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:53:37,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:53:37,680 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:53:37,680 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:53:37,687 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:53:37,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37 WrapperNode [2023-11-30 04:53:37,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:53:37,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:53:37,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:53:37,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:53:37,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,822 INFO L138 Inliner]: procedures = 490, calls = 133, calls flagged for inlining = 48, calls inlined = 122, statements flattened = 1873 [2023-11-30 04:53:37,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:53:37,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:53:37,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:53:37,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:53:37,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:53:37,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:53:37,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:53:37,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:53:37,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (1/1) ... [2023-11-30 04:53:37,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:53:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:53:37,995 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 04:53:38,023 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 04:53:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2023-11-30 04:53:38,033 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2023-11-30 04:53:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:53:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:53:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:53:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:53:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 04:53:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:53:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-30 04:53:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:53:38,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:53:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:53:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-30 04:53:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 04:53:38,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:53:38,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:53:38,038 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 04:53:38,327 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:53:38,329 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:53:40,499 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:53:41,139 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:53:41,139 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-30 04:53:41,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:53:41 BoogieIcfgContainer [2023-11-30 04:53:41,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:53:41,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:53:41,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:53:41,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:53:41,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:53:36" (1/3) ... [2023-11-30 04:53:41,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170b5d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:53:41, skipping insertion in model container [2023-11-30 04:53:41,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:53:37" (2/3) ... [2023-11-30 04:53:41,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170b5d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:53:41, skipping insertion in model container [2023-11-30 04:53:41,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:53:41" (3/3) ... [2023-11-30 04:53:41,149 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2023-11-30 04:53:41,165 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:53:41,166 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 514 error locations. [2023-11-30 04:53:41,166 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:53:41,382 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-30 04:53:41,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2278 places, 2364 transitions, 4735 flow [2023-11-30 04:53:42,892 INFO L124 PetriNetUnfolderBase]: 168/4414 cut-off events. [2023-11-30 04:53:42,893 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 04:53:42,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 4414 events. 168/4414 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 24376 event pairs, 0 based on Foata normal form. 0/3275 useless extension candidates. Maximal degree in co-relation 2262. Up to 6 conditions per place. [2023-11-30 04:53:42,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 2278 places, 2364 transitions, 4735 flow [2023-11-30 04:53:43,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2278 places, 2364 transitions, 4735 flow [2023-11-30 04:53:43,062 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:53:43,067 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;@6a447a33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:53:43,067 INFO L363 AbstractCegarLoop]: Starting to check reachability of 559 error locations. [2023-11-30 04:53:43,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:53:43,070 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-30 04:53:43,070 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:53:43,071 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:53:43,071 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] [2023-11-30 04:53:43,071 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 556 more)] === [2023-11-30 04:53:43,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:53:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash 879451087, now seen corresponding path program 1 times [2023-11-30 04:53:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:53:43,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174641550] [2023-11-30 04:53:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:53:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:53:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:53:43,687 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 04:53:43,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:53:43,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174641550] [2023-11-30 04:53:43,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174641550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:53:43,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:53:43,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:53:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228185923] [2023-11-30 04:53:43,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:53:43,697 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:53:43,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:53:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:53:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:53:43,750 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 1586 out of 2364 [2023-11-30 04:53:43,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2278 places, 2364 transitions, 4735 flow. Second operand has 5 states, 5 states have (on average 1588.0) internal successors, (7940), 5 states have internal predecessors, (7940), 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 04:53:43,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:53:43,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1586 of 2364 [2023-11-30 04:53:43,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:54:16,639 INFO L124 PetriNetUnfolderBase]: 43141/190901 cut-off events. [2023-11-30 04:54:16,639 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 04:54:16,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268642 conditions, 190901 events. 43141/190901 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 2793045 event pairs, 8026 based on Foata normal form. 3250/151330 useless extension candidates. Maximal degree in co-relation 265953. Up to 43586 conditions per place. [2023-11-30 04:54:17,736 INFO L140 encePairwiseOnDemand]: 2034/2364 looper letters, 1014 selfloop transitions, 79 changer transitions 0/2669 dead transitions. [2023-11-30 04:54:17,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2076 places, 2669 transitions, 7531 flow [2023-11-30 04:54:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:54:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:54:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 9509 transitions. [2023-11-30 04:54:17,771 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8044839255499154 [2023-11-30 04:54:17,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 9509 transitions. [2023-11-30 04:54:17,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 9509 transitions. [2023-11-30 04:54:17,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:54:17,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 9509 transitions. [2023-11-30 04:54:17,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 1901.8) internal successors, (9509), 5 states have internal predecessors, (9509), 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 04:54:17,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 2364.0) internal successors, (14184), 6 states have internal predecessors, (14184), 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 04:54:17,844 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 2364.0) internal successors, (14184), 6 states have internal predecessors, (14184), 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 04:54:17,848 INFO L307 CegarLoopForPetriNet]: 2278 programPoint places, -202 predicate places. [2023-11-30 04:54:17,848 INFO L500 AbstractCegarLoop]: Abstraction has has 2076 places, 2669 transitions, 7531 flow [2023-11-30 04:54:17,853 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1588.0) internal successors, (7940), 5 states have internal predecessors, (7940), 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 04:54:17,853 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:54:17,853 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] [2023-11-30 04:54:17,853 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:54:17,854 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 556 more)] === [2023-11-30 04:54:17,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:54:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 879451088, now seen corresponding path program 1 times [2023-11-30 04:54:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:54:17,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629053099] [2023-11-30 04:54:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:54:17,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:54:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:54:18,123 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 04:54:18,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:54:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629053099] [2023-11-30 04:54:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629053099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:54:18,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:54:18,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:54:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092856350] [2023-11-30 04:54:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:54:18,127 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:54:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:54:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:54:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:54:18,135 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 1542 out of 2364 [2023-11-30 04:54:18,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2076 places, 2669 transitions, 7531 flow. Second operand has 5 states, 5 states have (on average 1544.0) internal successors, (7720), 5 states have internal predecessors, (7720), 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 04:54:18,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:54:18,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1542 of 2364 [2023-11-30 04:54:18,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:54:56,612 INFO L124 PetriNetUnfolderBase]: 53122/216354 cut-off events. [2023-11-30 04:54:56,612 INFO L125 PetriNetUnfolderBase]: For 23912/26737 co-relation queries the response was YES. [2023-11-30 04:54:57,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400002 conditions, 216354 events. 53122/216354 cut-off events. For 23912/26737 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 3172085 event pairs, 11047 based on Foata normal form. 28/168245 useless extension candidates. Maximal degree in co-relation 396611. Up to 94941 conditions per place. [2023-11-30 04:54:57,943 INFO L140 encePairwiseOnDemand]: 2346/2364 looper letters, 1189 selfloop transitions, 15 changer transitions 0/2736 dead transitions. [2023-11-30 04:54:57,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2077 places, 2736 transitions, 10186 flow [2023-11-30 04:54:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:54:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:54:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8428 transitions. [2023-11-30 04:54:57,960 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7130287648054145 [2023-11-30 04:54:57,960 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 8428 transitions. [2023-11-30 04:54:57,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 8428 transitions. [2023-11-30 04:54:57,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:54:57,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 8428 transitions. [2023-11-30 04:54:57,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 1685.6) internal successors, (8428), 5 states have internal predecessors, (8428), 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 04:54:58,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 2364.0) internal successors, (14184), 6 states have internal predecessors, (14184), 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 04:54:58,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 2364.0) internal successors, (14184), 6 states have internal predecessors, (14184), 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 04:54:58,012 INFO L307 CegarLoopForPetriNet]: 2278 programPoint places, -201 predicate places. [2023-11-30 04:54:58,013 INFO L500 AbstractCegarLoop]: Abstraction has has 2077 places, 2736 transitions, 10186 flow [2023-11-30 04:54:58,014 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1544.0) internal successors, (7720), 5 states have internal predecessors, (7720), 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 04:54:58,015 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:54:58,015 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] [2023-11-30 04:54:58,015 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:54:58,015 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 556 more)] === [2023-11-30 04:54:58,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:54:58,016 INFO L85 PathProgramCache]: Analyzing trace with hash -907652524, now seen corresponding path program 1 times [2023-11-30 04:54:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:54:58,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171291047] [2023-11-30 04:54:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:54:58,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:54:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:54:58,173 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 04:54:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:54:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171291047] [2023-11-30 04:54:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171291047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:54:58,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:54:58,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:54:58,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631770996] [2023-11-30 04:54:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:54:58,183 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:54:58,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:54:58,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:54:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:54:58,194 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 1352 out of 2364 [2023-11-30 04:54:58,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2077 places, 2736 transitions, 10186 flow. Second operand has 7 states, 7 states have (on average 1354.7142857142858) internal successors, (9483), 7 states have internal predecessors, (9483), 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 04:54:58,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:54:58,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1352 of 2364 [2023-11-30 04:54:58,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:56:08,203 INFO L124 PetriNetUnfolderBase]: 80035/285115 cut-off events. [2023-11-30 04:56:08,203 INFO L125 PetriNetUnfolderBase]: For 111625/123378 co-relation queries the response was YES. [2023-11-30 04:56:08,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663271 conditions, 285115 events. 80035/285115 cut-off events. For 111625/123378 co-relation queries the response was YES. Maximal size of possible extension queue 1864. Compared 4160301 event pairs, 16991 based on Foata normal form. 542/223231 useless extension candidates. Maximal degree in co-relation 659132. Up to 123252 conditions per place. [2023-11-30 04:56:10,297 INFO L140 encePairwiseOnDemand]: 2033/2364 looper letters, 1775 selfloop transitions, 404 changer transitions 0/3533 dead transitions. [2023-11-30 04:56:10,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2083 places, 3533 transitions, 17406 flow [2023-11-30 04:56:10,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:56:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:56:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14252 transitions. [2023-11-30 04:56:10,356 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6698627561571724 [2023-11-30 04:56:10,356 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 14252 transitions. [2023-11-30 04:56:10,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14252 transitions. [2023-11-30 04:56:10,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:56:10,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 14252 transitions. [2023-11-30 04:56:10,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 1583.5555555555557) internal successors, (14252), 9 states have internal predecessors, (14252), 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 04:56:10,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 2364.0) internal successors, (23640), 10 states have internal predecessors, (23640), 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 04:56:10,511 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 2364.0) internal successors, (23640), 10 states have internal predecessors, (23640), 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 04:56:10,513 INFO L307 CegarLoopForPetriNet]: 2278 programPoint places, -195 predicate places. [2023-11-30 04:56:10,513 INFO L500 AbstractCegarLoop]: Abstraction has has 2083 places, 3533 transitions, 17406 flow [2023-11-30 04:56:10,528 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1354.7142857142858) internal successors, (9483), 7 states have internal predecessors, (9483), 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 04:56:10,528 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:56:10,528 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] [2023-11-30 04:56:10,528 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:56:10,529 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 556 more)] === [2023-11-30 04:56:10,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:56:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash -907652523, now seen corresponding path program 1 times [2023-11-30 04:56:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:56:10,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303118154] [2023-11-30 04:56:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:56:10,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:56:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:56:11,140 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 04:56:11,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:56:11,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303118154] [2023-11-30 04:56:11,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303118154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:56:11,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:56:11,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-30 04:56:11,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172880047] [2023-11-30 04:56:11,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:56:11,141 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-30 04:56:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:56:11,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-30 04:56:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-30 04:56:11,159 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 1308 out of 2364 [2023-11-30 04:56:11,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2083 places, 3533 transitions, 17406 flow. Second operand has 9 states, 9 states have (on average 1310.111111111111) internal successors, (11791), 9 states have internal predecessors, (11791), 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 04:56:11,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:56:11,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1308 of 2364 [2023-11-30 04:56:11,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:31,048 INFO L124 PetriNetUnfolderBase]: 83508/289287 cut-off events. [2023-11-30 04:57:31,049 INFO L125 PetriNetUnfolderBase]: For 208125/229710 co-relation queries the response was YES. [2023-11-30 04:57:31,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825287 conditions, 289287 events. 83508/289287 cut-off events. For 208125/229710 co-relation queries the response was YES. Maximal size of possible extension queue 1892. Compared 4193660 event pairs, 18691 based on Foata normal form. 74/226909 useless extension candidates. Maximal degree in co-relation 820311. Up to 152291 conditions per place. [2023-11-30 04:57:33,564 INFO L140 encePairwiseOnDemand]: 2340/2364 looper letters, 2218 selfloop transitions, 26 changer transitions 0/3542 dead transitions. [2023-11-30 04:57:33,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2090 places, 3542 transitions, 21926 flow [2023-11-30 04:57:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:57:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:57:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12728 transitions. [2023-11-30 04:57:33,588 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5982327505170145 [2023-11-30 04:57:33,588 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 12728 transitions. [2023-11-30 04:57:33,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12728 transitions. [2023-11-30 04:57:33,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:33,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 12728 transitions. [2023-11-30 04:57:33,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 1414.2222222222222) internal successors, (12728), 9 states have internal predecessors, (12728), 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 04:57:33,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 2364.0) internal successors, (23640), 10 states have internal predecessors, (23640), 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 04:57:33,667 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 2364.0) internal successors, (23640), 10 states have internal predecessors, (23640), 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 04:57:33,681 INFO L307 CegarLoopForPetriNet]: 2278 programPoint places, -188 predicate places. [2023-11-30 04:57:33,681 INFO L500 AbstractCegarLoop]: Abstraction has has 2090 places, 3542 transitions, 21926 flow [2023-11-30 04:57:33,683 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1310.111111111111) internal successors, (11791), 9 states have internal predecessors, (11791), 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 04:57:33,684 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:33,684 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, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:33,684 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:57:33,684 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [StealerErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, StealerErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 556 more)] === [2023-11-30 04:57:33,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1631509822, now seen corresponding path program 1 times [2023-11-30 04:57:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695717152] [2023-11-30 04:57:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:34,718 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 04:57:34,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:34,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695717152] [2023-11-30 04:57:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695717152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:34,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-30 04:57:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337658708] [2023-11-30 04:57:34,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:34,727 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 04:57:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 04:57:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-30 04:57:34,766 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 1381 out of 2364 [2023-11-30 04:57:34,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2090 places, 3542 transitions, 21926 flow. Second operand has 12 states, 12 states have (on average 1383.5) internal successors, (16602), 12 states have internal predecessors, (16602), 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 04:57:34,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:34,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1381 of 2364 [2023-11-30 04:57:34,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand