/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/mix015.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:06:53,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:06:53,580 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 21:06:53,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:06:53,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:06:53,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:06:53,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:06:53,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:06:53,616 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:06:53,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:06:53,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:06:53,617 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:06:53,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:06:53,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:06:53,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:06:53,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:06:53,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:06:53,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:06:53,619 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:06:53,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:06:53,619 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:06:53,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:06:53,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:06:53,622 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:06:53,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:06:53,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:53,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:06:53,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:06:53,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:06:53,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:06:53,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:06:53,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:06:53,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:06:53,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:06:53,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:06:53,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:06:53,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:06:53,837 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:06:53,838 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:06:53,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2023-12-05 21:06:54,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:06:55,025 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:06:55,025 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2023-12-05 21:06:55,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d0cd8dc/deb1c748f5e34d64a9689a2400f1a7b8/FLAGff81416ea [2023-12-05 21:06:55,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d0cd8dc/deb1c748f5e34d64a9689a2400f1a7b8 [2023-12-05 21:06:55,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:06:55,064 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:06:55,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:55,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:06:55,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:06:55,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b75a345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55, skipping insertion in model container [2023-12-05 21:06:55,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:06:55,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:55,409 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:06:55,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:55,487 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:55,488 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:55,493 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:06:55,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55 WrapperNode [2023-12-05 21:06:55,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:55,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:55,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:06:55,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:06:55,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,530 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2023-12-05 21:06:55,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:55,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:06:55,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:06:55,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:06:55,537 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:06:55,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:06:55,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:06:55,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:06:55,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:06:55,593 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 21:06:55,601 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 21:06:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:06:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:06:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:06:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:06:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:06:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:06:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:06:55,623 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 21:06:55,729 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:06:55,730 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:06:56,016 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:06:56,118 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:06:56,118 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:06:56,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:06:56 BoogieIcfgContainer [2023-12-05 21:06:56,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:06:56,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:06:56,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:06:56,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:06:56,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:06:55" (1/3) ... [2023-12-05 21:06:56,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0e15ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:06:56, skipping insertion in model container [2023-12-05 21:06:56,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55" (2/3) ... [2023-12-05 21:06:56,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0e15ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:06:56, skipping insertion in model container [2023-12-05 21:06:56,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:06:56" (3/3) ... [2023-12-05 21:06:56,126 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.opt.i [2023-12-05 21:06:56,138 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:06:56,139 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:06:56,139 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:06:56,186 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:06:56,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 127 transitions, 266 flow [2023-12-05 21:06:56,305 INFO L124 PetriNetUnfolderBase]: 3/124 cut-off events. [2023-12-05 21:06:56,305 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:56,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 124 events. 3/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-12-05 21:06:56,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 127 transitions, 266 flow [2023-12-05 21:06:56,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 160 flow [2023-12-05 21:06:56,330 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:06:56,337 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;@49038429, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:06:56,337 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:06:56,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:06:56,351 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-12-05 21:06:56,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:56,351 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:56,352 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] [2023-12-05 21:06:56,352 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 21:06:56,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash 711426223, now seen corresponding path program 1 times [2023-12-05 21:06:56,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:56,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900059081] [2023-12-05 21:06:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:56,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:56,631 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 21:06:56,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:56,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900059081] [2023-12-05 21:06:56,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900059081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:56,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:56,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:56,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13566823] [2023-12-05 21:06:56,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:56,639 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:56,682 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2023-12-05 21:06:56,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 21:06:56,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:56,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2023-12-05 21:06:56,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:56,744 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-12-05 21:06:56,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:56,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 2 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2023-12-05 21:06:56,747 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 14 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-12-05 21:06:56,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 188 flow [2023-12-05 21:06:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-12-05 21:06:56,757 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7979002624671916 [2023-12-05 21:06:56,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-12-05 21:06:56,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-12-05 21:06:56,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:56,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-12-05 21:06:56,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 21:06:56,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:56,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:56,770 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-12-05 21:06:56,770 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 188 flow [2023-12-05 21:06:56,771 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 21:06:56,771 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:56,771 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] [2023-12-05 21:06:56,771 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:06:56,771 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 21:06:56,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash 711426224, now seen corresponding path program 1 times [2023-12-05 21:06:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:56,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750828696] [2023-12-05 21:06:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:56,927 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 21:06:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750828696] [2023-12-05 21:06:56,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750828696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:56,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:56,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304669885] [2023-12-05 21:06:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:56,929 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:56,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:56,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:56,932 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 127 [2023-12-05 21:06:56,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:56,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:56,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 127 [2023-12-05 21:06:56,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:56,975 INFO L124 PetriNetUnfolderBase]: 3/93 cut-off events. [2023-12-05 21:06:56,976 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-05 21:06:56,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 93 events. 3/93 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 3 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 76. Up to 15 conditions per place. [2023-12-05 21:06:56,978 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 12 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-12-05 21:06:56,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 210 flow [2023-12-05 21:06:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-12-05 21:06:56,981 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2023-12-05 21:06:56,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-12-05 21:06:56,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-12-05 21:06:56,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:56,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-12-05 21:06:56,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:06:56,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:56,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:56,987 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-12-05 21:06:56,987 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 210 flow [2023-12-05 21:06:56,988 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:56,988 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:56,988 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] [2023-12-05 21:06:56,988 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:06:56,988 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:56,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:56,989 INFO L85 PathProgramCache]: Analyzing trace with hash 237873555, now seen corresponding path program 1 times [2023-12-05 21:06:56,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321398075] [2023-12-05 21:06:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:56,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,128 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 21:06:57,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321398075] [2023-12-05 21:06:57,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321398075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854280519] [2023-12-05 21:06:57,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,134 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,136 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 127 [2023-12-05 21:06:57,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 210 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 21:06:57,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 127 [2023-12-05 21:06:57,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,175 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-12-05 21:06:57,176 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-12-05 21:06:57,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 92 events. 3/92 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 3 based on Foata normal form. 1/93 useless extension candidates. Maximal degree in co-relation 86. Up to 15 conditions per place. [2023-12-05 21:06:57,177 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 12 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-12-05 21:06:57,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 74 transitions, 232 flow [2023-12-05 21:06:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-12-05 21:06:57,178 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2023-12-05 21:06:57,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-12-05 21:06:57,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-12-05 21:06:57,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-12-05 21:06:57,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:06:57,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,181 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2023-12-05 21:06:57,181 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 232 flow [2023-12-05 21:06:57,182 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 21:06:57,182 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:57,182 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] [2023-12-05 21:06:57,182 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:06:57,182 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:57,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash 237873554, now seen corresponding path program 1 times [2023-12-05 21:06:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:57,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020552649] [2023-12-05 21:06:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:57,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,252 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 21:06:57,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020552649] [2023-12-05 21:06:57,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020552649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982668] [2023-12-05 21:06:57,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,254 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,258 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2023-12-05 21:06:57,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 232 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 21:06:57,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2023-12-05 21:06:57,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,297 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-12-05 21:06:57,297 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-12-05 21:06:57,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 91 events. 3/91 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 3 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 94. Up to 14 conditions per place. [2023-12-05 21:06:57,298 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 12 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-12-05 21:06:57,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 73 transitions, 252 flow [2023-12-05 21:06:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-12-05 21:06:57,300 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7926509186351706 [2023-12-05 21:06:57,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-12-05 21:06:57,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-12-05 21:06:57,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-12-05 21:06:57,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:06:57,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,304 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-12-05 21:06:57,304 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 252 flow [2023-12-05 21:06:57,304 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 21:06:57,305 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:57,305 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] [2023-12-05 21:06:57,305 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:06:57,305 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:57,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash 920737555, now seen corresponding path program 1 times [2023-12-05 21:06:57,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:57,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432036293] [2023-12-05 21:06:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:06:57,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432036293] [2023-12-05 21:06:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432036293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160295204] [2023-12-05 21:06:57,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,379 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,380 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2023-12-05 21:06:57,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 252 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 21:06:57,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2023-12-05 21:06:57,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,408 INFO L124 PetriNetUnfolderBase]: 2/78 cut-off events. [2023-12-05 21:06:57,408 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-12-05 21:06:57,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 78 events. 2/78 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 2/80 useless extension candidates. Maximal degree in co-relation 83. Up to 13 conditions per place. [2023-12-05 21:06:57,409 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 13 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-12-05 21:06:57,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 284 flow [2023-12-05 21:06:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-12-05 21:06:57,410 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7952755905511811 [2023-12-05 21:06:57,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:06:57,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,414 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-12-05 21:06:57,414 INFO L500 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 284 flow [2023-12-05 21:06:57,414 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 21:06:57,414 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:57,415 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] [2023-12-05 21:06:57,415 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:06:57,415 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:57,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash 920737556, now seen corresponding path program 1 times [2023-12-05 21:06:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:57,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491185939] [2023-12-05 21:06:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:57,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,499 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 21:06:57,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491185939] [2023-12-05 21:06:57,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491185939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16657649] [2023-12-05 21:06:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,500 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,501 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 127 [2023-12-05 21:06:57,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 284 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 21:06:57,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 127 [2023-12-05 21:06:57,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,525 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2023-12-05 21:06:57,525 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-12-05 21:06:57,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 75 events. 1/75 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 2/77 useless extension candidates. Maximal degree in co-relation 76. Up to 12 conditions per place. [2023-12-05 21:06:57,526 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-12-05 21:06:57,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 72 transitions, 300 flow [2023-12-05 21:06:57,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-12-05 21:06:57,527 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8136482939632546 [2023-12-05 21:06:57,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-12-05 21:06:57,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-12-05 21:06:57,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-12-05 21:06:57,528 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 21:06:57,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 21:06:57,531 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-12-05 21:06:57,531 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 300 flow [2023-12-05 21:06:57,532 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 21:06:57,539 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix015.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:06:57,574 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:06:57,575 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:06:57,575 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:06:57,576 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:06:57,578 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:06:57,578 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:06:57,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:06:57 BasicIcfg [2023-12-05 21:06:57,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:06:57,587 INFO L158 Benchmark]: Toolchain (without parser) took 2519.56ms. Allocated memory is still 246.4MB. Free memory was 195.1MB in the beginning and 158.8MB in the end (delta: 36.3MB). Peak memory consumption was 36.8MB. Max. memory is 8.0GB. [2023-12-05 21:06:57,588 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 202.4MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:06:57,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.76ms. Allocated memory is still 246.4MB. Free memory was 194.5MB in the beginning and 170.4MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:57,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.86ms. Allocated memory is still 246.4MB. Free memory was 170.4MB in the beginning and 167.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:57,590 INFO L158 Benchmark]: Boogie Preprocessor took 30.63ms. Allocated memory is still 246.4MB. Free memory was 167.8MB in the beginning and 165.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:57,590 INFO L158 Benchmark]: RCFGBuilder took 557.71ms. Allocated memory is still 246.4MB. Free memory was 165.7MB in the beginning and 125.9MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-12-05 21:06:57,590 INFO L158 Benchmark]: TraceAbstraction took 1461.89ms. Allocated memory is still 246.4MB. Free memory was 124.8MB in the beginning and 158.8MB in the end (delta: -34.0MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:06:57,591 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 202.4MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 425.76ms. Allocated memory is still 246.4MB. Free memory was 194.5MB in the beginning and 170.4MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.86ms. Allocated memory is still 246.4MB. Free memory was 170.4MB in the beginning and 167.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.63ms. Allocated memory is still 246.4MB. Free memory was 167.8MB in the beginning and 165.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 557.71ms. Allocated memory is still 246.4MB. Free memory was 165.7MB in the beginning and 125.9MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1461.89ms. Allocated memory is still 246.4MB. Free memory was 124.8MB in the beginning and 158.8MB in the end (delta: -34.0MB). 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, 155 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: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 82 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=300occurred 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, 0.6s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 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 21:06:57,603 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...