/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-wmm/mix002.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:06:15,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:06:15,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:06:15,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:06:15,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:06:15,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:06:15,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:06:15,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:06:15,842 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:06:15,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:06:15,845 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:06:15,845 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:06:15,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:06:15,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:06:15,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:06:15,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:06:15,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:06:15,847 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:06:15,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:06:15,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:06:15,847 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:06:15,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:06:15,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:06:15,848 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:06:15,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:06:15,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:15,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:06:15,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:06:15,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:06:15,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:06:15,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:06:15,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:06:15,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:06:15,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:06:16,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:06:16,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:06:16,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:06:16,088 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:06:16,089 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:06:16,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2023-12-05 21:06:17,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:06:17,417 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:06:17,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.oepc.i [2023-12-05 21:06:17,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8928a031d/8e164dd078aa46b4b60ccb7cbf5392f2/FLAGe90f3b962 [2023-12-05 21:06:17,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8928a031d/8e164dd078aa46b4b60ccb7cbf5392f2 [2023-12-05 21:06:17,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:06:17,448 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:06:17,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:17,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:06:17,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:06:17,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774063ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17, skipping insertion in model container [2023-12-05 21:06:17,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,490 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:06:17,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:17,767 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:06:17,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:17,844 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:17,844 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:17,849 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:06:17,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17 WrapperNode [2023-12-05 21:06:17,851 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:17,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:17,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:06:17,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:06:17,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,891 INFO L138 Inliner]: procedures = 176, calls = 63, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 144 [2023-12-05 21:06:17,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:17,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:06:17,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:06:17,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:06:17,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:06:17,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:06:17,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:06:17,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:06:17,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (1/1) ... [2023-12-05 21:06:17,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:17,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:06:17,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:06:17,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:06:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:06:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:06:18,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:06:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:06:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:06:18,010 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:06:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:06:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:06:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:06:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:06:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:06:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:06:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:06:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:06:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:06:18,013 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:06:18,156 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:06:18,164 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:06:18,472 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:06:18,552 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:06:18,552 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:06:18,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:06:18 BoogieIcfgContainer [2023-12-05 21:06:18,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:06:18,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:06:18,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:06:18,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:06:18,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:06:17" (1/3) ... [2023-12-05 21:06:18,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a27849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:06:18, skipping insertion in model container [2023-12-05 21:06:18,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:17" (2/3) ... [2023-12-05 21:06:18,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a27849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:06:18, skipping insertion in model container [2023-12-05 21:06:18,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:06:18" (3/3) ... [2023-12-05 21:06:18,562 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.oepc.i [2023-12-05 21:06:18,574 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:06:18,575 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:06:18,575 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:06:18,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:06:18,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 129 transitions, 270 flow [2023-12-05 21:06:18,709 INFO L124 PetriNetUnfolderBase]: 3/126 cut-off events. [2023-12-05 21:06:18,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:18,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 126 events. 3/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-12-05 21:06:18,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 129 transitions, 270 flow [2023-12-05 21:06:18,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 79 transitions, 164 flow [2023-12-05 21:06:18,723 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:06:18,728 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;@15192e4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:06:18,729 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:06:18,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:06:18,754 INFO L124 PetriNetUnfolderBase]: 0/43 cut-off events. [2023-12-05 21:06:18,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:18,754 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:18,755 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, 1, 1, 1, 1] [2023-12-05 21:06:18,755 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:18,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1428253644, now seen corresponding path program 1 times [2023-12-05 21:06:18,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:18,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692428461] [2023-12-05 21:06:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:06:19,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692428461] [2023-12-05 21:06:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692428461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:19,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:19,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055208554] [2023-12-05 21:06:19,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:19,044 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:19,066 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 129 [2023-12-05 21:06:19,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:19,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 129 [2023-12-05 21:06:19,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:19,128 INFO L124 PetriNetUnfolderBase]: 24/173 cut-off events. [2023-12-05 21:06:19,129 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:06:19,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 173 events. 24/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 560 event pairs, 24 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 187. Up to 57 conditions per place. [2023-12-05 21:06:19,131 INFO L140 encePairwiseOnDemand]: 127/129 looper letters, 16 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-12-05 21:06:19,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 78 transitions, 196 flow [2023-12-05 21:06:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-12-05 21:06:19,154 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7984496124031008 [2023-12-05 21:06:19,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-12-05 21:06:19,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-12-05 21:06:19,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:19,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-12-05 21:06:19,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,175 INFO L308 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-12-05 21:06:19,175 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 196 flow [2023-12-05 21:06:19,176 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,176 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:19,176 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, 1, 1, 1, 1] [2023-12-05 21:06:19,176 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:06:19,177 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:19,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1428253645, now seen corresponding path program 1 times [2023-12-05 21:06:19,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:19,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75766979] [2023-12-05 21:06:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:19,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:06:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75766979] [2023-12-05 21:06:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75766979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:19,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:19,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662001650] [2023-12-05 21:06:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:19,323 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:19,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:19,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:19,325 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 129 [2023-12-05 21:06:19,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:19,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 129 [2023-12-05 21:06:19,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:19,384 INFO L124 PetriNetUnfolderBase]: 33/189 cut-off events. [2023-12-05 21:06:19,385 INFO L125 PetriNetUnfolderBase]: For 42/54 co-relation queries the response was YES. [2023-12-05 21:06:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 189 events. 33/189 cut-off events. For 42/54 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 672 event pairs, 33 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 275. Up to 65 conditions per place. [2023-12-05 21:06:19,386 INFO L140 encePairwiseOnDemand]: 127/129 looper letters, 14 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-12-05 21:06:19,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 222 flow [2023-12-05 21:06:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-12-05 21:06:19,389 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8165374677002584 [2023-12-05 21:06:19,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-12-05 21:06:19,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-12-05 21:06:19,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:19,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-12-05 21:06:19,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,393 INFO L308 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-12-05 21:06:19,393 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 222 flow [2023-12-05 21:06:19,394 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,394 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:19,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:06:19,394 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:06:19,394 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:19,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash 695324489, now seen corresponding path program 1 times [2023-12-05 21:06:19,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:19,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959721626] [2023-12-05 21:06:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:06:19,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959721626] [2023-12-05 21:06:19,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959721626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:19,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:19,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:19,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124989976] [2023-12-05 21:06:19,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:19,476 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:19,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:19,478 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 129 [2023-12-05 21:06:19,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:19,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 129 [2023-12-05 21:06:19,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:19,537 INFO L124 PetriNetUnfolderBase]: 31/164 cut-off events. [2023-12-05 21:06:19,537 INFO L125 PetriNetUnfolderBase]: For 105/125 co-relation queries the response was YES. [2023-12-05 21:06:19,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 164 events. 31/164 cut-off events. For 105/125 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 504 event pairs, 9 based on Foata normal form. 3/163 useless extension candidates. Maximal degree in co-relation 303. Up to 63 conditions per place. [2023-12-05 21:06:19,542 INFO L140 encePairwiseOnDemand]: 127/129 looper letters, 17 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-12-05 21:06:19,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 266 flow [2023-12-05 21:06:19,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-12-05 21:06:19,547 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8010335917312662 [2023-12-05 21:06:19,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-12-05 21:06:19,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-12-05 21:06:19,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:19,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-12-05 21:06:19,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,552 INFO L308 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2023-12-05 21:06:19,553 INFO L500 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 266 flow [2023-12-05 21:06:19,553 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,553 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:19,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:06:19,553 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:06:19,553 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:19,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash 695324490, now seen corresponding path program 1 times [2023-12-05 21:06:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:19,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940127494] [2023-12-05 21:06:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:06:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:19,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940127494] [2023-12-05 21:06:19,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940127494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:19,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:19,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:19,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81959887] [2023-12-05 21:06:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:19,664 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:19,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:19,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:19,665 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 129 [2023-12-05 21:06:19,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:19,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 129 [2023-12-05 21:06:19,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:19,729 INFO L124 PetriNetUnfolderBase]: 29/159 cut-off events. [2023-12-05 21:06:19,730 INFO L125 PetriNetUnfolderBase]: For 189/219 co-relation queries the response was YES. [2023-12-05 21:06:19,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 159 events. 29/159 cut-off events. For 189/219 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 459 event pairs, 9 based on Foata normal form. 5/160 useless extension candidates. Maximal degree in co-relation 341. Up to 58 conditions per place. [2023-12-05 21:06:19,732 INFO L140 encePairwiseOnDemand]: 127/129 looper letters, 15 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-12-05 21:06:19,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 292 flow [2023-12-05 21:06:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-12-05 21:06:19,734 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8191214470284238 [2023-12-05 21:06:19,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-12-05 21:06:19,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-12-05 21:06:19,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:19,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-12-05 21:06:19,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,740 INFO L308 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2023-12-05 21:06:19,740 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 292 flow [2023-12-05 21:06:19,741 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,742 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:19,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:06:19,742 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:06:19,743 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:19,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash 559348035, now seen corresponding path program 1 times [2023-12-05 21:06:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:19,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808185801] [2023-12-05 21:06:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:06:19,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:19,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808185801] [2023-12-05 21:06:19,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808185801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:19,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:19,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723790356] [2023-12-05 21:06:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:19,861 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:19,862 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 129 [2023-12-05 21:06:19,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:19,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 129 [2023-12-05 21:06:19,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:19,930 INFO L124 PetriNetUnfolderBase]: 22/158 cut-off events. [2023-12-05 21:06:19,930 INFO L125 PetriNetUnfolderBase]: For 243/281 co-relation queries the response was YES. [2023-12-05 21:06:19,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 158 events. 22/158 cut-off events. For 243/281 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 428 event pairs, 3 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 348. Up to 51 conditions per place. [2023-12-05 21:06:19,932 INFO L140 encePairwiseOnDemand]: 127/129 looper letters, 18 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-12-05 21:06:19,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 79 transitions, 354 flow [2023-12-05 21:06:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-12-05 21:06:19,934 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8217054263565892 [2023-12-05 21:06:19,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-12-05 21:06:19,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-12-05 21:06:19,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:19,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-12-05 21:06:19,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,938 INFO L308 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2023-12-05 21:06:19,939 INFO L500 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 354 flow [2023-12-05 21:06:19,939 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:19,939 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:19,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:06:19,940 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:06:19,940 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:19,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:19,943 INFO L85 PathProgramCache]: Analyzing trace with hash 559348034, now seen corresponding path program 1 times [2023-12-05 21:06:19,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843930888] [2023-12-05 21:06:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:06:19,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:19,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843930888] [2023-12-05 21:06:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843930888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:20,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:20,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725073434] [2023-12-05 21:06:20,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:20,003 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:20,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:20,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:20,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:20,005 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 129 [2023-12-05 21:06:20,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:20,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:20,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 129 [2023-12-05 21:06:20,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:20,038 INFO L124 PetriNetUnfolderBase]: 15/133 cut-off events. [2023-12-05 21:06:20,039 INFO L125 PetriNetUnfolderBase]: For 353/403 co-relation queries the response was YES. [2023-12-05 21:06:20,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 133 events. 15/133 cut-off events. For 353/403 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 318 event pairs, 0 based on Foata normal form. 12/144 useless extension candidates. Maximal degree in co-relation 305. Up to 38 conditions per place. [2023-12-05 21:06:20,039 INFO L140 encePairwiseOnDemand]: 127/129 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2023-12-05 21:06:20,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 78 transitions, 384 flow [2023-12-05 21:06:20,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-12-05 21:06:20,041 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7984496124031008 [2023-12-05 21:06:20,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-12-05 21:06:20,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-12-05 21:06:20,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:20,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-12-05 21:06:20,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:20,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:20,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:20,044 INFO L308 CegarLoopForPetriNet]: 86 programPoint places, 6 predicate places. [2023-12-05 21:06:20,044 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 384 flow [2023-12-05 21:06:20,045 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:20,053 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix002.oepc.i_BEv2_AllErrorsAtOnce [2023-12-05 21:06:20,131 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:06:20,131 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:06:20,131 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:06:20,131 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:06:20,131 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:06:20,131 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:06:20,132 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:06:20,132 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:06:20,132 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:06:20,132 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:06:20,133 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:06:20,135 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:06:20,135 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:06:20,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:06:20 BasicIcfg [2023-12-05 21:06:20,140 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:06:20,140 INFO L158 Benchmark]: Toolchain (without parser) took 2692.24ms. Allocated memory was 203.4MB in the beginning and 261.1MB in the end (delta: 57.7MB). Free memory was 137.9MB in the beginning and 218.0MB in the end (delta: -80.1MB). Peak memory consumption was 18.4MB. Max. memory is 8.0GB. [2023-12-05 21:06:20,142 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 203.4MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:06:20,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.26ms. Allocated memory was 203.4MB in the beginning and 261.1MB in the end (delta: 57.7MB). Free memory was 137.7MB in the beginning and 218.1MB in the end (delta: -80.4MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. [2023-12-05 21:06:20,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.14ms. Allocated memory is still 261.1MB. Free memory was 218.1MB in the beginning and 215.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:20,143 INFO L158 Benchmark]: Boogie Preprocessor took 57.11ms. Allocated memory is still 261.1MB. Free memory was 215.5MB in the beginning and 213.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:20,144 INFO L158 Benchmark]: RCFGBuilder took 604.12ms. Allocated memory is still 261.1MB. Free memory was 213.4MB in the beginning and 174.6MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-05 21:06:20,144 INFO L158 Benchmark]: TraceAbstraction took 1582.78ms. Allocated memory is still 261.1MB. Free memory was 174.1MB in the beginning and 218.0MB in the end (delta: -43.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:06:20,149 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 203.4MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 402.26ms. Allocated memory was 203.4MB in the beginning and 261.1MB in the end (delta: 57.7MB). Free memory was 137.7MB in the beginning and 218.1MB in the end (delta: -80.4MB). Peak memory consumption was 21.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.14ms. Allocated memory is still 261.1MB. Free memory was 218.1MB in the beginning and 215.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.11ms. Allocated memory is still 261.1MB. Free memory was 215.5MB in the beginning and 213.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 604.12ms. Allocated memory is still 261.1MB. Free memory was 213.4MB in the beginning and 174.6MB in the end (delta: 38.8MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1582.78ms. Allocated memory is still 261.1MB. Free memory was 174.1MB in the beginning and 218.0MB in the end (delta: -43.9MB). There was no memory consumed. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 158 locations, 9 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: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=384occurred in iteration=6, InterpolantAutomatonStates: 18, 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, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:06:20,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...