/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/safe023_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:10:14,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:10:14,526 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 21:10:14,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:10:14,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:10:14,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:10:14,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:10:14,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:10:14,560 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:10:14,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:10:14,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:10:14,564 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:10:14,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:10:14,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:10:14,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:10:14,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:10:14,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:10:14,566 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:10:14,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:10:14,567 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:10:14,567 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:10:14,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:10:14,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:10:14,568 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:10:14,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:10:14,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:14,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:10:14,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:10:14,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:10:14,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:10:14,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:10:14,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:10:14,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:10:14,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:10:14,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:10:14,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:10:14,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:10:14,844 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:10:14,844 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:10:14,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2023-12-05 21:10:16,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:10:16,327 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:10:16,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2023-12-05 21:10:16,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effd75724/db7266880bfc47b897bd2c5b1132d839/FLAGa0911fc3e [2023-12-05 21:10:16,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/effd75724/db7266880bfc47b897bd2c5b1132d839 [2023-12-05 21:10:16,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:10:16,380 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:10:16,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:16,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:10:16,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:10:16,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cef174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16, skipping insertion in model container [2023-12-05 21:10:16,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:10:16,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:16,794 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:10:16,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:16,859 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:16,860 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:16,866 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:10:16,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16 WrapperNode [2023-12-05 21:10:16,866 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:16,867 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:16,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:10:16,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:10:16,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,912 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-12-05 21:10:16,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:16,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:10:16,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:10:16,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:10:16,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:10:16,945 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:10:16,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:10:16,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:10:16,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (1/1) ... [2023-12-05 21:10:16,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:16,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:10:16,976 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 21:10:16,978 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 21:10:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:10:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:10:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:10:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:10:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:10:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:10:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:10:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:10:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:10:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:10:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:10:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:10:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:10:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:10:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:10:17,003 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 21:10:17,121 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:10:17,123 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:10:17,345 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:10:17,365 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:10:17,365 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:10:17,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:17 BoogieIcfgContainer [2023-12-05 21:10:17,367 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:10:17,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:10:17,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:10:17,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:10:17,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:10:16" (1/3) ... [2023-12-05 21:10:17,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed8a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:17, skipping insertion in model container [2023-12-05 21:10:17,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:16" (2/3) ... [2023-12-05 21:10:17,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed8a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:17, skipping insertion in model container [2023-12-05 21:10:17,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:17" (3/3) ... [2023-12-05 21:10:17,374 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2023-12-05 21:10:17,404 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:10:17,405 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:10:17,405 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:10:17,449 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:10:17,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 103 transitions, 218 flow [2023-12-05 21:10:17,515 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2023-12-05 21:10:17,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:17,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 3/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-12-05 21:10:17,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 103 transitions, 218 flow [2023-12-05 21:10:17,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 54 transitions, 114 flow [2023-12-05 21:10:17,530 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:10:17,536 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;@442abc30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:10:17,536 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:10:17,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:10:17,541 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-12-05 21:10:17,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:17,542 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:17,542 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] [2023-12-05 21:10:17,543 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 21:10:17,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:17,547 INFO L85 PathProgramCache]: Analyzing trace with hash -770216643, now seen corresponding path program 1 times [2023-12-05 21:10:17,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:17,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140490105] [2023-12-05 21:10:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:17,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:17,827 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 21:10:17,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:17,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140490105] [2023-12-05 21:10:17,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140490105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:17,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:17,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:17,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904061113] [2023-12-05 21:10:17,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:17,837 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:17,873 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2023-12-05 21:10:17,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 21:10:17,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:17,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2023-12-05 21:10:17,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:17,933 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2023-12-05 21:10:17,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:17,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 53 events. 0/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-12-05 21:10:17,934 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 13 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-12-05 21:10:17,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 140 flow [2023-12-05 21:10:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:17,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-12-05 21:10:17,946 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7961165048543689 [2023-12-05 21:10:17,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-12-05 21:10:17,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-12-05 21:10:17,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:17,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-12-05 21:10:17,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 21:10:17,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:17,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:17,961 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2023-12-05 21:10:17,961 INFO L500 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 140 flow [2023-12-05 21:10:17,962 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 21:10:17,962 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:17,962 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] [2023-12-05 21:10:17,962 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:10:17,962 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 21:10:17,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash -770216642, now seen corresponding path program 1 times [2023-12-05 21:10:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:17,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457801543] [2023-12-05 21:10:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:17,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:18,166 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 21:10:18,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:18,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457801543] [2023-12-05 21:10:18,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457801543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:18,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:18,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:18,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606271221] [2023-12-05 21:10:18,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:18,168 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:18,170 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 103 [2023-12-05 21:10:18,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 21:10:18,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:18,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 103 [2023-12-05 21:10:18,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:18,204 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2023-12-05 21:10:18,205 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-05 21:10:18,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 52 events. 0/52 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:10:18,205 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-12-05 21:10:18,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 160 flow [2023-12-05 21:10:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-12-05 21:10:18,208 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8187702265372169 [2023-12-05 21:10:18,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-12-05 21:10:18,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-12-05 21:10:18,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:18,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-12-05 21:10:18,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 21:10:18,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,212 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-12-05 21:10:18,212 INFO L500 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 160 flow [2023-12-05 21:10:18,212 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 21:10:18,212 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:18,213 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] [2023-12-05 21:10:18,213 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:10:18,213 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 21:10:18,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:18,214 INFO L85 PathProgramCache]: Analyzing trace with hash 911847232, now seen corresponding path program 1 times [2023-12-05 21:10:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:18,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238087453] [2023-12-05 21:10:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:18,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:18,302 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 21:10:18,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238087453] [2023-12-05 21:10:18,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238087453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:18,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:18,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:18,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714386873] [2023-12-05 21:10:18,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:18,309 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:18,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:18,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:18,312 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 103 [2023-12-05 21:10:18,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 21:10:18,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:18,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 103 [2023-12-05 21:10:18,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:18,360 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2023-12-05 21:10:18,360 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-12-05 21:10:18,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 51 events. 0/51 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:10:18,361 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-12-05 21:10:18,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 180 flow [2023-12-05 21:10:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-12-05 21:10:18,364 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8187702265372169 [2023-12-05 21:10:18,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-12-05 21:10:18,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-12-05 21:10:18,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:18,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-12-05 21:10:18,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 21:10:18,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,367 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-12-05 21:10:18,368 INFO L500 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 180 flow [2023-12-05 21:10:18,368 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 21:10:18,368 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:18,368 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] [2023-12-05 21:10:18,368 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:10:18,369 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 21:10:18,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:18,369 INFO L85 PathProgramCache]: Analyzing trace with hash 911847231, now seen corresponding path program 1 times [2023-12-05 21:10:18,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:18,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980790028] [2023-12-05 21:10:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:18,480 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 21:10:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:18,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980790028] [2023-12-05 21:10:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980790028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:18,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495272105] [2023-12-05 21:10:18,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:18,482 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:18,484 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2023-12-05 21:10:18,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 21:10:18,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:18,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2023-12-05 21:10:18,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:18,537 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2023-12-05 21:10:18,537 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-12-05 21:10:18,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 50 events. 0/50 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-12-05 21:10:18,538 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-12-05 21:10:18,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 50 transitions, 198 flow [2023-12-05 21:10:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-12-05 21:10:18,541 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7896440129449838 [2023-12-05 21:10:18,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-12-05 21:10:18,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-12-05 21:10:18,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:18,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-12-05 21:10:18,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 21:10:18,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,545 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2023-12-05 21:10:18,545 INFO L500 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 198 flow [2023-12-05 21:10:18,545 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 21:10:18,546 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:18,546 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] [2023-12-05 21:10:18,546 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:10:18,546 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 21:10:18,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1889603822, now seen corresponding path program 1 times [2023-12-05 21:10:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:18,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909864224] [2023-12-05 21:10:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:18,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:18,598 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 21:10:18,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:18,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909864224] [2023-12-05 21:10:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909864224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:18,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219835785] [2023-12-05 21:10:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:18,600 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:18,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:18,601 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2023-12-05 21:10:18,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 21:10:18,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:18,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2023-12-05 21:10:18,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:18,642 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-12-05 21:10:18,642 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-12-05 21:10:18,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 49 events. 0/49 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-12-05 21:10:18,643 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 11 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-12-05 21:10:18,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 49 transitions, 216 flow [2023-12-05 21:10:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-12-05 21:10:18,645 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7896440129449838 [2023-12-05 21:10:18,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-12-05 21:10:18,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-12-05 21:10:18,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:18,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-12-05 21:10:18,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 21:10:18,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,650 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2023-12-05 21:10:18,651 INFO L500 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 216 flow [2023-12-05 21:10:18,651 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 21:10:18,651 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:18,651 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] [2023-12-05 21:10:18,652 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:10:18,652 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 21:10:18,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1889603823, now seen corresponding path program 1 times [2023-12-05 21:10:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:18,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139260468] [2023-12-05 21:10:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:18,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:18,763 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 21:10:18,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139260468] [2023-12-05 21:10:18,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139260468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:18,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:18,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056262313] [2023-12-05 21:10:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:18,765 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:18,766 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 103 [2023-12-05 21:10:18,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 21:10:18,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:18,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 103 [2023-12-05 21:10:18,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:18,784 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-12-05 21:10:18,785 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-12-05 21:10:18,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 48 events. 0/48 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-12-05 21:10:18,785 INFO L140 encePairwiseOnDemand]: 101/103 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-12-05 21:10:18,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 48 transitions, 228 flow [2023-12-05 21:10:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-12-05 21:10:18,787 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8122977346278317 [2023-12-05 21:10:18,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-12-05 21:10:18,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-12-05 21:10:18,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:18,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-12-05 21:10:18,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 21:10:18,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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 21:10:18,790 INFO L308 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-12-05 21:10:18,790 INFO L500 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 228 flow [2023-12-05 21:10:18,790 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 21:10:18,797 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe023_tso.i_BEv2_AllErrorsAtOnce [2023-12-05 21:10:18,829 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:10:18,829 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:10:18,830 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:10:18,830 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:10:18,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:10:18,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:10:18,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:10:18,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:10:18,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:10:18,832 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:10:18,832 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:10:18,835 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:10:18,835 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:10:18,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:10:18 BasicIcfg [2023-12-05 21:10:18,845 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:10:18,852 INFO L158 Benchmark]: Toolchain (without parser) took 2465.44ms. Allocated memory was 201.3MB in the beginning and 292.6MB in the end (delta: 91.2MB). Free memory was 157.5MB in the beginning and 250.6MB in the end (delta: -93.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:18,853 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:18,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.92ms. Allocated memory is still 201.3MB. Free memory was 157.2MB in the beginning and 136.9MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-05 21:10:18,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.27ms. Allocated memory is still 201.3MB. Free memory was 136.9MB in the beginning and 134.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:18,854 INFO L158 Benchmark]: Boogie Preprocessor took 31.51ms. Allocated memory is still 201.3MB. Free memory was 134.9MB in the beginning and 133.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:18,855 INFO L158 Benchmark]: RCFGBuilder took 421.41ms. Allocated memory is still 201.3MB. Free memory was 133.1MB in the beginning and 118.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-05 21:10:18,857 INFO L158 Benchmark]: TraceAbstraction took 1476.58ms. Allocated memory was 201.3MB in the beginning and 292.6MB in the end (delta: 91.2MB). Free memory was 118.0MB in the beginning and 250.6MB in the end (delta: -132.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:18,859 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 483.92ms. Allocated memory is still 201.3MB. Free memory was 157.2MB in the beginning and 136.9MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.27ms. Allocated memory is still 201.3MB. Free memory was 136.9MB in the beginning and 134.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.51ms. Allocated memory is still 201.3MB. Free memory was 134.9MB in the beginning and 133.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 421.41ms. Allocated memory is still 201.3MB. Free memory was 133.1MB in the beginning and 118.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1476.58ms. Allocated memory was 201.3MB in the beginning and 292.6MB in the end (delta: 91.2MB). Free memory was 118.0MB in the beginning and 250.6MB in the end (delta: -132.6MB). 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, 129 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: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 72 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=228occurred 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, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 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 21:10:18,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...