/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 20:58:48,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 20:58:48,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 20:58:48,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 20:58:48,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 20:58:48,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 20:58:48,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 20:58:48,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 20:58:48,984 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 20:58:48,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 20:58:48,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 20:58:48,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 20:58:48,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 20:58:48,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 20:58:48,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 20:58:48,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 20:58:48,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 20:58:48,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 20:58:48,991 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 20:58:48,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 20:58:48,991 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 20:58:48,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 20:58:48,992 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 20:58:48,992 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 20:58:48,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 20:58:48,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 20:58:48,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 20:58:48,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 20:58:48,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 20:58:48,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 20:58:48,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 20:58:48,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 20:58:48,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 20:58:48,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 20:58:49,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 20:58:49,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 20:58:49,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 20:58:49,194 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 20:58:49,194 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 20:58:49,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2023-12-05 20:58:50,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 20:58:50,457 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 20:58:50,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2023-12-05 20:58:50,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e5f3fa2/09acc4cd5f894468b7774ccfd3ca8520/FLAG3baf4915d [2023-12-05 20:58:50,482 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e5f3fa2/09acc4cd5f894468b7774ccfd3ca8520 [2023-12-05 20:58:50,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 20:58:50,485 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 20:58:50,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 20:58:50,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 20:58:50,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 20:58:50,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1184b535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50, skipping insertion in model container [2023-12-05 20:58:50,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,525 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 20:58:50,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 20:58:50,761 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 20:58:50,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 20:58:50,841 INFO L206 MainTranslator]: Completed translation [2023-12-05 20:58:50,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50 WrapperNode [2023-12-05 20:58:50,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 20:58:50,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 20:58:50,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 20:58:50,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 20:58:50,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,890 INFO L138 Inliner]: procedures = 169, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-12-05 20:58:50,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 20:58:50,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 20:58:50,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 20:58:50,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 20:58:50,897 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 20:58:50,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 20:58:50,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 20:58:50,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 20:58:50,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (1/1) ... [2023-12-05 20:58:50,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 20:58:50,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 20:58:50,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 20:58:51,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 20:58:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 20:58:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 20:58:51,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 20:58:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 20:58:51,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 20:58:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 20:58:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 20:58:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 20:58:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 20:58:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 20:58:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 20:58:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 20:58:51,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 20:58:51,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 20:58:51,043 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 20:58:51,148 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 20:58:51,149 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 20:58:51,353 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 20:58:51,374 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 20:58:51,374 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 20:58:51,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:58:51 BoogieIcfgContainer [2023-12-05 20:58:51,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 20:58:51,377 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 20:58:51,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 20:58:51,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 20:58:51,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:58:50" (1/3) ... [2023-12-05 20:58:51,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6577428f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:58:51, skipping insertion in model container [2023-12-05 20:58:51,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:58:50" (2/3) ... [2023-12-05 20:58:51,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6577428f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:58:51, skipping insertion in model container [2023-12-05 20:58:51,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:58:51" (3/3) ... [2023-12-05 20:58:51,381 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2023-12-05 20:58:51,393 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 20:58:51,393 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 20:58:51,393 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 20:58:51,447 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-05 20:58:51,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 224 flow [2023-12-05 20:58:51,502 INFO L124 PetriNetUnfolderBase]: 2/103 cut-off events. [2023-12-05 20:58:51,502 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 20:58:51,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 2/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-12-05 20:58:51,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 105 transitions, 224 flow [2023-12-05 20:58:51,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 83 transitions, 175 flow [2023-12-05 20:58:51,514 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 20:58:51,519 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;@707210b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 20:58:51,519 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 20:58:51,528 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 20:58:51,528 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-12-05 20:58:51,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 20:58:51,529 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:58:51,529 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:58:51,529 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 20:58:51,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:58:51,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1301788747, now seen corresponding path program 1 times [2023-12-05 20:58:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:58:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477319879] [2023-12-05 20:58:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:58:51,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:58:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:58:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:58:51,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:58:51,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477319879] [2023-12-05 20:58:51,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477319879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:58:51,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:58:51,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:58:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981174400] [2023-12-05 20:58:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:58:51,849 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:58:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:58:51,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:58:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:58:51,870 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 105 [2023-12-05 20:58:51,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:51,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:58:51,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 105 [2023-12-05 20:58:51,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:58:52,016 INFO L124 PetriNetUnfolderBase]: 116/437 cut-off events. [2023-12-05 20:58:52,017 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-12-05 20:58:52,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 437 events. 116/437 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2373 event pairs, 116 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 581. Up to 220 conditions per place. [2023-12-05 20:58:52,023 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 25 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-12-05 20:58:52,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 223 flow [2023-12-05 20:58:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:58:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:58:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-12-05 20:58:52,037 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7365079365079366 [2023-12-05 20:58:52,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-12-05 20:58:52,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-12-05 20:58:52,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:58:52,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-12-05 20:58:52,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,055 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-12-05 20:58:52,055 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 223 flow [2023-12-05 20:58:52,055 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,055 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:58:52,056 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:58:52,056 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 20:58:52,056 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 20:58:52,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:58:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1301788746, now seen corresponding path program 1 times [2023-12-05 20:58:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:58:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354369601] [2023-12-05 20:58:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:58:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:58:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:58:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:58:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:58:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354369601] [2023-12-05 20:58:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354369601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:58:52,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:58:52,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:58:52,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323853933] [2023-12-05 20:58:52,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:58:52,215 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:58:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:58:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:58:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:58:52,216 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 105 [2023-12-05 20:58:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:58:52,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 105 [2023-12-05 20:58:52,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:58:52,298 INFO L124 PetriNetUnfolderBase]: 84/355 cut-off events. [2023-12-05 20:58:52,298 INFO L125 PetriNetUnfolderBase]: For 98/130 co-relation queries the response was YES. [2023-12-05 20:58:52,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 355 events. 84/355 cut-off events. For 98/130 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1770 event pairs, 84 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 571. Up to 162 conditions per place. [2023-12-05 20:58:52,303 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 22 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-12-05 20:58:52,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 261 flow [2023-12-05 20:58:52,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:58:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:58:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-12-05 20:58:52,307 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2023-12-05 20:58:52,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-12-05 20:58:52,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-12-05 20:58:52,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:58:52,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-12-05 20:58:52,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,311 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-12-05 20:58:52,311 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 261 flow [2023-12-05 20:58:52,311 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,311 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:58:52,311 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:58:52,312 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 20:58:52,312 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 20:58:52,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:58:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash 964299859, now seen corresponding path program 1 times [2023-12-05 20:58:52,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:58:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673004362] [2023-12-05 20:58:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:58:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:58:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:58:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:58:52,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:58:52,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673004362] [2023-12-05 20:58:52,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673004362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:58:52,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:58:52,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:58:52,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025522353] [2023-12-05 20:58:52,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:58:52,424 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:58:52,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:58:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:58:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:58:52,428 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 105 [2023-12-05 20:58:52,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:58:52,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 105 [2023-12-05 20:58:52,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:58:52,489 INFO L124 PetriNetUnfolderBase]: 76/325 cut-off events. [2023-12-05 20:58:52,489 INFO L125 PetriNetUnfolderBase]: For 240/308 co-relation queries the response was YES. [2023-12-05 20:58:52,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 325 events. 76/325 cut-off events. For 240/308 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1547 event pairs, 76 based on Foata normal form. 9/321 useless extension candidates. Maximal degree in co-relation 669. Up to 154 conditions per place. [2023-12-05 20:58:52,496 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 22 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-12-05 20:58:52,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 299 flow [2023-12-05 20:58:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:58:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:58:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-12-05 20:58:52,497 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2023-12-05 20:58:52,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-12-05 20:58:52,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-12-05 20:58:52,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:58:52,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-12-05 20:58:52,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,501 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-12-05 20:58:52,501 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 299 flow [2023-12-05 20:58:52,501 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,501 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:58:52,501 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:58:52,501 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 20:58:52,501 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 20:58:52,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:58:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash 964299858, now seen corresponding path program 1 times [2023-12-05 20:58:52,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:58:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982234650] [2023-12-05 20:58:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:58:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:58:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:58:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:58:52,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:58:52,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982234650] [2023-12-05 20:58:52,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982234650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:58:52,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:58:52,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:58:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455403357] [2023-12-05 20:58:52,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:58:52,595 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:58:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:58:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:58:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:58:52,596 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 105 [2023-12-05 20:58:52,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:58:52,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 105 [2023-12-05 20:58:52,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:58:52,664 INFO L124 PetriNetUnfolderBase]: 68/295 cut-off events. [2023-12-05 20:58:52,664 INFO L125 PetriNetUnfolderBase]: For 428/528 co-relation queries the response was YES. [2023-12-05 20:58:52,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 295 events. 68/295 cut-off events. For 428/528 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1336 event pairs, 68 based on Foata normal form. 9/292 useless extension candidates. Maximal degree in co-relation 749. Up to 136 conditions per place. [2023-12-05 20:58:52,665 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2023-12-05 20:58:52,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 75 transitions, 331 flow [2023-12-05 20:58:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:58:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:58:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-12-05 20:58:52,666 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2023-12-05 20:58:52,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-12-05 20:58:52,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-12-05 20:58:52,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:58:52,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-12-05 20:58:52,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,668 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-12-05 20:58:52,668 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 331 flow [2023-12-05 20:58:52,669 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:58:52,674 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/stateful01-1.i_BEv2_AllErrorsAtOnce [2023-12-05 20:58:52,700 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-12-05 20:58:52,700 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-12-05 20:58:52,701 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-12-05 20:58:52,702 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 20:58:52,702 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 20:58:52,704 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 20:58:52,704 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 20:58:52,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:58:52 BasicIcfg [2023-12-05 20:58:52,713 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 20:58:52,714 INFO L158 Benchmark]: Toolchain (without parser) took 2228.86ms. Allocated memory is still 317.7MB. Free memory was 262.0MB in the beginning and 269.7MB in the end (delta: -7.7MB). Peak memory consumption was 124.8MB. Max. memory is 8.0GB. [2023-12-05 20:58:52,714 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 20:58:52,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.83ms. Allocated memory is still 317.7MB. Free memory was 262.0MB in the beginning and 242.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-05 20:58:52,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.49ms. Allocated memory is still 317.7MB. Free memory was 242.1MB in the beginning and 240.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 20:58:52,719 INFO L158 Benchmark]: Boogie Preprocessor took 28.83ms. Allocated memory is still 317.7MB. Free memory was 240.0MB in the beginning and 238.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 20:58:52,721 INFO L158 Benchmark]: RCFGBuilder took 454.67ms. Allocated memory is still 317.7MB. Free memory was 238.4MB in the beginning and 220.1MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-05 20:58:52,721 INFO L158 Benchmark]: TraceAbstraction took 1336.24ms. Allocated memory is still 317.7MB. Free memory was 219.5MB in the beginning and 269.7MB in the end (delta: -50.2MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. [2023-12-05 20:58:52,724 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 356.83ms. Allocated memory is still 317.7MB. Free memory was 262.0MB in the beginning and 242.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.49ms. Allocated memory is still 317.7MB. Free memory was 242.1MB in the beginning and 240.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.83ms. Allocated memory is still 317.7MB. Free memory was 240.0MB in the beginning and 238.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 454.67ms. Allocated memory is still 317.7MB. Free memory was 238.4MB in the beginning and 220.1MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1336.24ms. Allocated memory is still 317.7MB. Free memory was 219.5MB in the beginning and 269.7MB in the end (delta: -50.2MB). Peak memory consumption was 81.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 138 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 28 mSDtfsCounter, 90 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=331occurred in iteration=4, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 20:58:52,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...