/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.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:06:53,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:06:53,729 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 21:06:53,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:06:53,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:06:53,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:06:53,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:06:53,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:06:53,756 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:06:53,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:06:53,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:06:53,759 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:06:53,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:06:53,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:06:53,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:06:53,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:06:53,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:06:53,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:06:53,761 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:06:53,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:06:53,761 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:06:53,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:06:53,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:06:53,762 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:06:53,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:06:53,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:53,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:06:53,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:06:53,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:06:53,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:06:53,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:06:53,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:06:53,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:06:53,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:06:53,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:06:53,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:06:53,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:06:53,972 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:06:53,972 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:06:53,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix015.oepc.i [2023-12-05 21:06:55,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:06:55,368 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:06:55,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix015.oepc.i [2023-12-05 21:06:55,386 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1d997c6/a0923b3168f246d4a77c0838970c07c6/FLAGb5e565a96 [2023-12-05 21:06:55,396 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1d997c6/a0923b3168f246d4a77c0838970c07c6 [2023-12-05 21:06:55,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:06:55,401 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:06:55,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:55,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:06:55,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:06:55,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6941309e 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 21:06:55,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:55" (1/1) ... [2023-12-05 21:06:55,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:06:55,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:55,797 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:06:55,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:55,875 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:55,876 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:55,881 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:06:55,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:55 WrapperNode [2023-12-05 21:06:55,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:55,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:55,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:06:55,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:06:55,888 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 21:06:55,919 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 21:06:55,942 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 143 [2023-12-05 21:06:55,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:55,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:06:55,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:06:55,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:06:55,950 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 21:06:55,950 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 21:06:55,952 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 21:06:55,953 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 21:06:55,958 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 21:06:55,960 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 21:06:55,961 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 21:06:55,962 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 21:06:55,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:06:55,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:06:55,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:06:55,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:06:55,966 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 21:06:55,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:55,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:06:55,989 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 21:06:56,027 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 21:06:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:06:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:06:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:06:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:06:56,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:06:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:06:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:06:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:06:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:06:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:06:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:06:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:06:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:06:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:06:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:06:56,049 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 21:06:56,180 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:06:56,184 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:06:56,478 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:06:56,655 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:06:56,656 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:06:56,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:06:56 BoogieIcfgContainer [2023-12-05 21:06:56,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:06:56,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:06:56,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:06:56,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:06:56,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:06:55" (1/3) ... [2023-12-05 21:06:56,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35df356b 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 21:06:56,663 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 21:06:56,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35df356b 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 21:06:56,663 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 21:06:56,664 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.oepc.i [2023-12-05 21:06:56,691 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:06:56,691 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:06:56,691 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:06:56,763 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:06:56,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 127 transitions, 266 flow [2023-12-05 21:06:56,854 INFO L124 PetriNetUnfolderBase]: 3/124 cut-off events. [2023-12-05 21:06:56,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:56,859 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 95 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 21:06:56,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 127 transitions, 266 flow [2023-12-05 21:06:56,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 160 flow [2023-12-05 21:06:56,874 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:06:56,880 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;@50734d1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:06:56,880 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:06:56,891 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:06:56,891 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-12-05 21:06:56,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:56,892 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:56,892 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 21:06:56,892 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 21:06:56,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash -963395226, now seen corresponding path program 1 times [2023-12-05 21:06:56,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:56,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574095437] [2023-12-05 21:06:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:56,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,165 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 21:06:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574095437] [2023-12-05 21:06:57,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574095437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092148392] [2023-12-05 21:06:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,173 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,197 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 127 [2023-12-05 21:06:57,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 21:06:57,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 127 [2023-12-05 21:06:57,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,262 INFO L124 PetriNetUnfolderBase]: 24/169 cut-off events. [2023-12-05 21:06:57,262 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:06:57,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 169 events. 24/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 548 event pairs, 24 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 184. Up to 57 conditions per place. [2023-12-05 21:06:57,266 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 16 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-12-05 21:06:57,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 192 flow [2023-12-05 21:06:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-12-05 21:06:57,277 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7952755905511811 [2023-12-05 21:06:57,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,285 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 21:06:57,288 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 21:06:57,288 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 21:06:57,293 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-12-05 21:06:57,293 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 192 flow [2023-12-05 21:06:57,293 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 21:06:57,293 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:57,293 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 21:06:57,294 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:06:57,294 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 21:06:57,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash -963395225, now seen corresponding path program 1 times [2023-12-05 21:06:57,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:57,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204326701] [2023-12-05 21:06:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,405 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 21:06:57,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204326701] [2023-12-05 21:06:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204326701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529312260] [2023-12-05 21:06:57,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,407 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,408 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2023-12-05 21:06:57,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 21:06:57,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2023-12-05 21:06:57,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,472 INFO L124 PetriNetUnfolderBase]: 33/185 cut-off events. [2023-12-05 21:06:57,473 INFO L125 PetriNetUnfolderBase]: For 41/51 co-relation queries the response was YES. [2023-12-05 21:06:57,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 185 events. 33/185 cut-off events. For 41/51 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 657 event pairs, 33 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 272. Up to 65 conditions per place. [2023-12-05 21:06:57,474 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 14 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-12-05 21:06:57,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 218 flow [2023-12-05 21:06:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-12-05 21:06:57,476 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8136482939632546 [2023-12-05 21:06:57,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-12-05 21:06:57,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-12-05 21:06:57,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-12-05 21:06:57,478 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 21:06:57,479 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 21:06:57,479 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 21:06:57,480 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-12-05 21:06:57,480 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 218 flow [2023-12-05 21:06:57,480 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 21:06:57,481 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:57,481 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 21:06:57,481 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:06:57,481 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 21:06:57,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:57,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1392853931, now seen corresponding path program 1 times [2023-12-05 21:06:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:57,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122424870] [2023-12-05 21:06:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:57,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,618 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 21:06:57,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122424870] [2023-12-05 21:06:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122424870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136409857] [2023-12-05 21:06:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,620 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,622 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2023-12-05 21:06:57,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 218 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 21:06:57,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2023-12-05 21:06:57,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,726 INFO L124 PetriNetUnfolderBase]: 31/167 cut-off events. [2023-12-05 21:06:57,727 INFO L125 PetriNetUnfolderBase]: For 98/114 co-relation queries the response was YES. [2023-12-05 21:06:57,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 167 events. 31/167 cut-off events. For 98/114 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 536 event pairs, 19 based on Foata normal form. 3/167 useless extension candidates. Maximal degree in co-relation 307. Up to 63 conditions per place. [2023-12-05 21:06:57,741 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 16 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-12-05 21:06:57,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 260 flow [2023-12-05 21:06:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-12-05 21:06:57,743 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8188976377952756 [2023-12-05 21:06:57,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-12-05 21:06:57,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-12-05 21:06:57,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-12-05 21:06:57,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 21:06:57,745 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 21:06:57,745 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 21:06:57,746 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2023-12-05 21:06:57,746 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 260 flow [2023-12-05 21:06:57,746 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 21:06:57,746 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:57,746 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 21:06:57,746 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:06:57,747 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 21:06:57,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1392853930, now seen corresponding path program 1 times [2023-12-05 21:06:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:57,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426413628] [2023-12-05 21:06:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:57,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,812 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 21:06:57,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426413628] [2023-12-05 21:06:57,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426413628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459611721] [2023-12-05 21:06:57,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,814 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,815 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 127 [2023-12-05 21:06:57,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 260 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 21:06:57,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 127 [2023-12-05 21:06:57,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:57,876 INFO L124 PetriNetUnfolderBase]: 29/155 cut-off events. [2023-12-05 21:06:57,876 INFO L125 PetriNetUnfolderBase]: For 183/207 co-relation queries the response was YES. [2023-12-05 21:06:57,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 155 events. 29/155 cut-off events. For 183/207 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 451 event pairs, 9 based on Foata normal form. 5/157 useless extension candidates. Maximal degree in co-relation 338. Up to 58 conditions per place. [2023-12-05 21:06:57,877 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 16 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-12-05 21:06:57,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 75 transitions, 288 flow [2023-12-05 21:06:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-12-05 21:06:57,882 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7952755905511811 [2023-12-05 21:06:57,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:57,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-12-05 21:06:57,883 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 21:06:57,884 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 21:06:57,885 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 21:06:57,886 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-12-05 21:06:57,886 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 288 flow [2023-12-05 21:06:57,887 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 21:06:57,887 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:57,887 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 21:06:57,887 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:06:57,888 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 21:06:57,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash 993141972, now seen corresponding path program 1 times [2023-12-05 21:06:57,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:57,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219234705] [2023-12-05 21:06:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:57,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:57,950 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 21:06:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219234705] [2023-12-05 21:06:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219234705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211699494] [2023-12-05 21:06:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:57,951 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:57,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:57,952 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 127 [2023-12-05 21:06:57,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 288 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 21:06:57,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:57,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 127 [2023-12-05 21:06:57,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:58,005 INFO L124 PetriNetUnfolderBase]: 22/146 cut-off events. [2023-12-05 21:06:58,006 INFO L125 PetriNetUnfolderBase]: For 248/278 co-relation queries the response was YES. [2023-12-05 21:06:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 146 events. 22/146 cut-off events. For 248/278 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 398 event pairs, 3 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 337. Up to 51 conditions per place. [2023-12-05 21:06:58,009 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 19 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-12-05 21:06:58,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 77 transitions, 352 flow [2023-12-05 21:06:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-12-05 21:06:58,010 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7979002624671916 [2023-12-05 21:06:58,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-12-05 21:06:58,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-12-05 21:06:58,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:58,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-12-05 21:06:58,011 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 21:06:58,012 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 21:06:58,012 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 21:06:58,015 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-12-05 21:06:58,015 INFO L500 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 352 flow [2023-12-05 21:06:58,016 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 21:06:58,016 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:58,016 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 21:06:58,016 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:06:58,017 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 21:06:58,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash 993141973, now seen corresponding path program 1 times [2023-12-05 21:06:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558480192] [2023-12-05 21:06:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:58,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:58,095 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 21:06:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558480192] [2023-12-05 21:06:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558480192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:58,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:58,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796095732] [2023-12-05 21:06:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:58,096 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:58,097 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2023-12-05 21:06:58,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 352 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 21:06:58,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:58,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2023-12-05 21:06:58,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:58,128 INFO L124 PetriNetUnfolderBase]: 15/133 cut-off events. [2023-12-05 21:06:58,128 INFO L125 PetriNetUnfolderBase]: For 324/364 co-relation queries the response was YES. [2023-12-05 21:06:58,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 133 events. 15/133 cut-off events. For 324/364 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 337 event pairs, 3 based on Foata normal form. 12/145 useless extension candidates. Maximal degree in co-relation 306. Up to 38 conditions per place. [2023-12-05 21:06:58,129 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2023-12-05 21:06:58,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 380 flow [2023-12-05 21:06:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-12-05 21:06:58,130 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2023-12-05 21:06:58,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-12-05 21:06:58,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-12-05 21:06:58,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:58,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-12-05 21:06:58,131 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 21:06:58,132 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 21:06:58,132 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 21:06:58,134 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-12-05 21:06:58,134 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 380 flow [2023-12-05 21:06:58,135 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 21:06:58,143 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix015.oepc.i_BEv2_AllErrorsAtOnce [2023-12-05 21:06:58,174 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:06:58,175 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:06:58,175 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:06:58,175 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:06:58,175 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:06:58,175 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:06:58,176 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:06:58,176 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:06:58,180 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:06:58,180 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:06:58,181 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:06:58,184 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:06:58,184 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:06:58,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:06:58 BasicIcfg [2023-12-05 21:06:58,189 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:06:58,195 INFO L158 Benchmark]: Toolchain (without parser) took 2788.93ms. Allocated memory is still 337.6MB. Free memory was 286.7MB in the beginning and 197.7MB in the end (delta: 89.0MB). Peak memory consumption was 90.5MB. Max. memory is 8.0GB. [2023-12-05 21:06:58,196 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 168.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:06:58,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.84ms. Allocated memory is still 337.6MB. Free memory was 286.2MB in the beginning and 262.6MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:58,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.66ms. Allocated memory is still 337.6MB. Free memory was 262.6MB in the beginning and 260.0MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:58,197 INFO L158 Benchmark]: Boogie Preprocessor took 21.76ms. Allocated memory is still 337.6MB. Free memory was 260.0MB in the beginning and 258.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:06:58,197 INFO L158 Benchmark]: RCFGBuilder took 692.48ms. Allocated memory is still 337.6MB. Free memory was 257.9MB in the beginning and 297.7MB in the end (delta: -39.8MB). Peak memory consumption was 36.2MB. Max. memory is 8.0GB. [2023-12-05 21:06:58,199 INFO L158 Benchmark]: TraceAbstraction took 1529.84ms. Allocated memory is still 337.6MB. Free memory was 297.2MB in the beginning and 197.7MB in the end (delta: 99.4MB). Peak memory consumption was 99.4MB. Max. memory is 8.0GB. [2023-12-05 21:06:58,201 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 168.8MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 478.84ms. Allocated memory is still 337.6MB. Free memory was 286.2MB in the beginning and 262.6MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.66ms. Allocated memory is still 337.6MB. Free memory was 262.6MB in the beginning and 260.0MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.76ms. Allocated memory is still 337.6MB. Free memory was 260.0MB in the beginning and 258.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 692.48ms. Allocated memory is still 337.6MB. Free memory was 257.9MB in the beginning and 297.7MB in the end (delta: -39.8MB). Peak memory consumption was 36.2MB. Max. memory is 8.0GB. * TraceAbstraction took 1529.84ms. Allocated memory is still 337.6MB. Free memory was 297.2MB in the beginning and 197.7MB in the end (delta: 99.4MB). Peak memory consumption was 99.4MB. 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: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s 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=380occurred 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, 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 21:06:58,214 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...