/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/weaver/parallel-bakery-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:33:38,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:33:38,740 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 [2023-11-30 05:33:38,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:33:38,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:33:38,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:33:38,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:33:38,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:33:38,758 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:33:38,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:33:38,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:33:38,759 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:33:38,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:33:38,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:33:38,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:33:38,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:33:38,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:33:38,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:33:38,760 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:33:38,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:33:38,761 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:33:38,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:33:38,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:33:38,761 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:33:38,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:33:38,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:33:38,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:33:38,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:33:38,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:33:38,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:33:38,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:33:38,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:33:38,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:33:38,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:33:38,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:33:38,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:33:38,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:33:38,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:33:38,968 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:33:38,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2023-11-30 05:33:39,953 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:33:40,128 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:33:40,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2023-11-30 05:33:40,134 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5247bafb8/6332795d744148b58ba4175c1c6a05ac/FLAG87c473870 [2023-11-30 05:33:40,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5247bafb8/6332795d744148b58ba4175c1c6a05ac [2023-11-30 05:33:40,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:33:40,523 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:33:40,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:33:40,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:33:40,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:33:40,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543be866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40, skipping insertion in model container [2023-11-30 05:33:40,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:33:40,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:33:40,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:33:40,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:33:40,728 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:33:40,728 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:33:40,732 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:33:40,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40 WrapperNode [2023-11-30 05:33:40,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:33:40,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:33:40,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:33:40,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:33:40,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,762 INFO L138 Inliner]: procedures = 23, calls = 177, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 410 [2023-11-30 05:33:40,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:33:40,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:33:40,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:33:40,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:33:40,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:33:40,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:33:40,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:33:40,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:33:40,801 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (1/1) ... [2023-11-30 05:33:40,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:33:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:33:40,833 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) [2023-11-30 05:33:40,850 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 [2023-11-30 05:33:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:33:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:33:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:33:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:33:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:33:40,859 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 05:33:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 05:33:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-30 05:33:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-30 05:33:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:33:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:33:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:33:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 05:33:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 05:33:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:33:40,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:33:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:33:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:33:40,863 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 05:33:40,972 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:33:40,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:33:41,408 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:33:41,527 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:33:41,527 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 05:33:41,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:33:41 BoogieIcfgContainer [2023-11-30 05:33:41,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:33:41,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:33:41,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:33:41,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:33:41,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:33:40" (1/3) ... [2023-11-30 05:33:41,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1182fdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:33:41, skipping insertion in model container [2023-11-30 05:33:41,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:33:40" (2/3) ... [2023-11-30 05:33:41,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1182fdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:33:41, skipping insertion in model container [2023-11-30 05:33:41,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:33:41" (3/3) ... [2023-11-30 05:33:41,533 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2023-11-30 05:33:41,544 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:33:41,544 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 05:33:41,544 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:33:41,628 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 05:33:41,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 233 transitions, 494 flow [2023-11-30 05:33:41,758 INFO L124 PetriNetUnfolderBase]: 2/229 cut-off events. [2023-11-30 05:33:41,758 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-30 05:33:41,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 229 events. 2/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 284 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 170. Up to 2 conditions per place. [2023-11-30 05:33:41,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 233 transitions, 494 flow [2023-11-30 05:33:41,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 202 transitions, 425 flow [2023-11-30 05:33:41,777 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:33:41,783 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;@299ad383, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:33:41,783 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-30 05:33:41,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:33:41,804 INFO L124 PetriNetUnfolderBase]: 1/84 cut-off events. [2023-11-30 05:33:41,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:33:41,804 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:33:41,805 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:33:41,805 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:33:41,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:33:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash -122647122, now seen corresponding path program 1 times [2023-11-30 05:33:41,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:33:41,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728384664] [2023-11-30 05:33:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:33:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:33:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:33:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:33:42,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:33:42,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728384664] [2023-11-30 05:33:42,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728384664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:33:42,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:33:42,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:33:42,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162888755] [2023-11-30 05:33:42,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:33:42,376 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:33:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:33:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:33:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:33:42,407 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 233 [2023-11-30 05:33:42,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 202 transitions, 425 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2023-11-30 05:33:42,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:33:42,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 233 [2023-11-30 05:33:42,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:33:50,525 INFO L124 PetriNetUnfolderBase]: 47684/78849 cut-off events. [2023-11-30 05:33:50,526 INFO L125 PetriNetUnfolderBase]: For 1952/1968 co-relation queries the response was YES. [2023-11-30 05:33:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144087 conditions, 78849 events. 47684/78849 cut-off events. For 1952/1968 co-relation queries the response was YES. Maximal size of possible extension queue 3152. Compared 730920 event pairs, 47684 based on Foata normal form. 1/72401 useless extension candidates. Maximal degree in co-relation 129979. Up to 63474 conditions per place. [2023-11-30 05:33:51,002 INFO L140 encePairwiseOnDemand]: 229/233 looper letters, 57 selfloop transitions, 1 changer transitions 1/199 dead transitions. [2023-11-30 05:33:51,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 199 transitions, 535 flow [2023-11-30 05:33:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:33:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:33:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-11-30 05:33:51,017 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7825464949928469 [2023-11-30 05:33:51,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-11-30 05:33:51,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-11-30 05:33:51,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:33:51,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-11-30 05:33:51,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 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) [2023-11-30 05:33:51,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:33:51,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:33:51,031 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:33:51,032 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 199 transitions, 535 flow [2023-11-30 05:33:51,032 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2023-11-30 05:33:51,032 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:33:51,032 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:33:51,032 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:33:51,033 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:33:51,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:33:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash -122647121, now seen corresponding path program 1 times [2023-11-30 05:33:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:33:51,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279931650] [2023-11-30 05:33:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:33:51,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:33:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:33:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:33:51,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:33:51,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279931650] [2023-11-30 05:33:51,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279931650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:33:51,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:33:51,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:33:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890854102] [2023-11-30 05:33:51,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:33:51,317 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:33:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:33:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:33:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:33:51,319 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 233 [2023-11-30 05:33:51,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 199 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 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) [2023-11-30 05:33:51,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:33:51,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 233 [2023-11-30 05:33:51,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:33:57,474 INFO L124 PetriNetUnfolderBase]: 36274/60779 cut-off events. [2023-11-30 05:33:57,475 INFO L125 PetriNetUnfolderBase]: For 5731/13173 co-relation queries the response was YES. [2023-11-30 05:33:57,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159650 conditions, 60779 events. 36274/60779 cut-off events. For 5731/13173 co-relation queries the response was YES. Maximal size of possible extension queue 2192. Compared 549302 event pairs, 36274 based on Foata normal form. 0/58669 useless extension candidates. Maximal degree in co-relation 134434. Up to 49135 conditions per place. [2023-11-30 05:33:58,002 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 61 selfloop transitions, 1 changer transitions 1/197 dead transitions. [2023-11-30 05:33:58,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 197 transitions, 651 flow [2023-11-30 05:33:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:33:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:33:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-11-30 05:33:58,005 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7610872675250357 [2023-11-30 05:33:58,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-11-30 05:33:58,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-11-30 05:33:58,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:33:58,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-11-30 05:33:58,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 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) [2023-11-30 05:33:58,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:33:58,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:33:58,009 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:33:58,010 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 197 transitions, 651 flow [2023-11-30 05:33:58,010 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 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) [2023-11-30 05:33:58,010 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:33:58,010 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:33:58,010 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:33:58,011 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:33:58,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:33:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash 112234613, now seen corresponding path program 1 times [2023-11-30 05:33:58,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:33:58,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387292632] [2023-11-30 05:33:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:33:58,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:33:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:33:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:33:58,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:33:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387292632] [2023-11-30 05:33:58,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387292632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:33:58,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:33:58,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:33:58,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204774143] [2023-11-30 05:33:58,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:33:58,136 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:33:58,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:33:58,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:33:58,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:33:58,138 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 233 [2023-11-30 05:33:58,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 197 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2023-11-30 05:33:58,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:33:58,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 233 [2023-11-30 05:33:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:34:03,990 INFO L124 PetriNetUnfolderBase]: 34923/58903 cut-off events. [2023-11-30 05:34:03,991 INFO L125 PetriNetUnfolderBase]: For 11101/25965 co-relation queries the response was YES. [2023-11-30 05:34:04,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200653 conditions, 58903 events. 34923/58903 cut-off events. For 11101/25965 co-relation queries the response was YES. Maximal size of possible extension queue 2164. Compared 536256 event pairs, 34923 based on Foata normal form. 0/57314 useless extension candidates. Maximal degree in co-relation 174749. Up to 47264 conditions per place. [2023-11-30 05:34:04,437 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 55 selfloop transitions, 1 changer transitions 1/195 dead transitions. [2023-11-30 05:34:04,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 195 transitions, 751 flow [2023-11-30 05:34:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:34:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:34:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-11-30 05:34:04,439 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7782546494992847 [2023-11-30 05:34:04,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-11-30 05:34:04,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-11-30 05:34:04,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:34:04,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-11-30 05:34:04,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2023-11-30 05:34:04,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:04,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:04,442 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:34:04,442 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 195 transitions, 751 flow [2023-11-30 05:34:04,442 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2023-11-30 05:34:04,442 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:34:04,443 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:34:04,443 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:34:04,443 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:34:04,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:34:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash 112234614, now seen corresponding path program 1 times [2023-11-30 05:34:04,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:34:04,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67425433] [2023-11-30 05:34:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:34:04,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:34:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:34:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:34:04,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:34:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67425433] [2023-11-30 05:34:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67425433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:34:04,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:34:04,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:34:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775894813] [2023-11-30 05:34:04,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:34:04,579 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:34:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:34:04,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:34:04,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:34:04,581 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 233 [2023-11-30 05:34:04,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 195 transitions, 751 flow. Second operand has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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) [2023-11-30 05:34:04,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:34:04,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 233 [2023-11-30 05:34:04,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:34:10,654 INFO L124 PetriNetUnfolderBase]: 33572/57027 cut-off events. [2023-11-30 05:34:10,654 INFO L125 PetriNetUnfolderBase]: For 16960/39561 co-relation queries the response was YES. [2023-11-30 05:34:10,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239082 conditions, 57027 events. 33572/57027 cut-off events. For 16960/39561 co-relation queries the response was YES. Maximal size of possible extension queue 2138. Compared 523050 event pairs, 33572 based on Foata normal form. 520/55959 useless extension candidates. Maximal degree in co-relation 215618. Up to 45393 conditions per place. [2023-11-30 05:34:11,094 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 57 selfloop transitions, 1 changer transitions 1/193 dead transitions. [2023-11-30 05:34:11,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 193 transitions, 855 flow [2023-11-30 05:34:11,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:34:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:34:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-11-30 05:34:11,096 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7553648068669528 [2023-11-30 05:34:11,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-11-30 05:34:11,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-11-30 05:34:11,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:34:11,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-11-30 05:34:11,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2023-11-30 05:34:11,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:11,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:11,099 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:34:11,100 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 193 transitions, 855 flow [2023-11-30 05:34:11,100 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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) [2023-11-30 05:34:11,100 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:34:11,100 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:34:11,100 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:34:11,100 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:34:11,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:34:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2015795175, now seen corresponding path program 1 times [2023-11-30 05:34:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:34:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361170058] [2023-11-30 05:34:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:34:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:34:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:34:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:34:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:34:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361170058] [2023-11-30 05:34:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361170058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:34:11,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:34:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:34:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470478830] [2023-11-30 05:34:11,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:34:11,207 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:34:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:34:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:34:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:34:11,209 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 233 [2023-11-30 05:34:11,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 193 transitions, 855 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-11-30 05:34:11,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:34:11,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 233 [2023-11-30 05:34:11,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:34:17,361 INFO L124 PetriNetUnfolderBase]: 33348/56620 cut-off events. [2023-11-30 05:34:17,361 INFO L125 PetriNetUnfolderBase]: For 23941/54649 co-relation queries the response was YES. [2023-11-30 05:34:17,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282048 conditions, 56620 events. 33348/56620 cut-off events. For 23941/54649 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 517598 event pairs, 33348 based on Foata normal form. 125/55646 useless extension candidates. Maximal degree in co-relation 255049. Up to 45041 conditions per place. [2023-11-30 05:34:17,836 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 52 selfloop transitions, 1 changer transitions 1/191 dead transitions. [2023-11-30 05:34:17,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 191 transitions, 949 flow [2023-11-30 05:34:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:34:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:34:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-11-30 05:34:17,838 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7911301859799714 [2023-11-30 05:34:17,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-11-30 05:34:17,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-11-30 05:34:17,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:34:17,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-11-30 05:34:17,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2023-11-30 05:34:17,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:17,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:17,842 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:34:17,842 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 191 transitions, 949 flow [2023-11-30 05:34:17,843 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-11-30 05:34:17,843 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:34:17,843 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:34:17,843 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 05:34:17,843 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:34:17,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:34:17,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2015795176, now seen corresponding path program 1 times [2023-11-30 05:34:17,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:34:17,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643706093] [2023-11-30 05:34:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:34:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:34:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:34:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:34:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:34:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643706093] [2023-11-30 05:34:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643706093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:34:17,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:34:17,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:34:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215294593] [2023-11-30 05:34:17,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:34:17,923 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:34:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:34:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:34:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:34:17,924 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 233 [2023-11-30 05:34:17,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 191 transitions, 949 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-11-30 05:34:17,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:34:17,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 233 [2023-11-30 05:34:17,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:34:24,297 INFO L124 PetriNetUnfolderBase]: 33124/56213 cut-off events. [2023-11-30 05:34:24,297 INFO L125 PetriNetUnfolderBase]: For 34725/72922 co-relation queries the response was YES. [2023-11-30 05:34:24,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324055 conditions, 56213 events. 33124/56213 cut-off events. For 34725/72922 co-relation queries the response was YES. Maximal size of possible extension queue 2137. Compared 513810 event pairs, 33124 based on Foata normal form. 0/55245 useless extension candidates. Maximal degree in co-relation 294000. Up to 44689 conditions per place. [2023-11-30 05:34:24,807 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 51 selfloop transitions, 1 changer transitions 1/189 dead transitions. [2023-11-30 05:34:24,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 189 transitions, 1029 flow [2023-11-30 05:34:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:34:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:34:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2023-11-30 05:34:24,808 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7725321888412017 [2023-11-30 05:34:24,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2023-11-30 05:34:24,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2023-11-30 05:34:24,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:34:24,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2023-11-30 05:34:24,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2023-11-30 05:34:24,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:24,811 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:24,812 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:34:24,812 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 189 transitions, 1029 flow [2023-11-30 05:34:24,812 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-11-30 05:34:24,812 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:34:24,812 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:34:24,812 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 05:34:24,812 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:34:24,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:34:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1856090496, now seen corresponding path program 1 times [2023-11-30 05:34:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:34:24,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920445803] [2023-11-30 05:34:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:34:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:34:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:34:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:34:24,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:34:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920445803] [2023-11-30 05:34:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920445803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:34:24,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:34:24,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:34:24,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593784203] [2023-11-30 05:34:24,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:34:24,877 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:34:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:34:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:34:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:34:24,878 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 233 [2023-11-30 05:34:24,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 189 transitions, 1029 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-11-30 05:34:24,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:34:24,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 233 [2023-11-30 05:34:24,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:34:31,049 INFO L124 PetriNetUnfolderBase]: 31773/53887 cut-off events. [2023-11-30 05:34:31,049 INFO L125 PetriNetUnfolderBase]: For 45101/90399 co-relation queries the response was YES. [2023-11-30 05:34:31,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354885 conditions, 53887 events. 31773/53887 cut-off events. For 45101/90399 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 489192 event pairs, 31773 based on Foata normal form. 491/53457 useless extension candidates. Maximal degree in co-relation 320807. Up to 42818 conditions per place. [2023-11-30 05:34:31,609 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 50 selfloop transitions, 1 changer transitions 1/187 dead transitions. [2023-11-30 05:34:31,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 187 transitions, 1115 flow [2023-11-30 05:34:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:34:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:34:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2023-11-30 05:34:31,611 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7882689556509299 [2023-11-30 05:34:31,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2023-11-30 05:34:31,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2023-11-30 05:34:31,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:34:31,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2023-11-30 05:34:31,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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) [2023-11-30 05:34:31,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:31,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:31,614 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:34:31,614 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 187 transitions, 1115 flow [2023-11-30 05:34:31,614 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-11-30 05:34:31,614 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:34:31,615 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:34:31,615 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 05:34:31,615 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:34:31,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:34:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1856090497, now seen corresponding path program 1 times [2023-11-30 05:34:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:34:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117957897] [2023-11-30 05:34:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:34:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:34:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:34:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:34:31,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:34:31,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117957897] [2023-11-30 05:34:31,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117957897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:34:31,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:34:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:34:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537684136] [2023-11-30 05:34:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:34:31,656 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:34:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:34:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:34:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:34:31,656 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 233 [2023-11-30 05:34:31,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 187 transitions, 1115 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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) [2023-11-30 05:34:31,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:34:31,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 233 [2023-11-30 05:34:31,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:34:38,193 INFO L124 PetriNetUnfolderBase]: 30422/51561 cut-off events. [2023-11-30 05:34:38,194 INFO L125 PetriNetUnfolderBase]: For 58225/109548 co-relation queries the response was YES. [2023-11-30 05:34:38,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380934 conditions, 51561 events. 30422/51561 cut-off events. For 58225/109548 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 463804 event pairs, 30422 based on Foata normal form. 491/51178 useless extension candidates. Maximal degree in co-relation 342878. Up to 40947 conditions per place. [2023-11-30 05:34:38,682 INFO L140 encePairwiseOnDemand]: 230/233 looper letters, 0 selfloop transitions, 0 changer transitions 185/185 dead transitions. [2023-11-30 05:34:38,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 185 transitions, 1187 flow [2023-11-30 05:34:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:34:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:34:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-11-30 05:34:38,683 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7696709585121603 [2023-11-30 05:34:38,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-11-30 05:34:38,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-11-30 05:34:38,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:34:38,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-11-30 05:34:38,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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) [2023-11-30 05:34:38,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:38,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 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) [2023-11-30 05:34:38,686 INFO L307 CegarLoopForPetriNet]: 214 programPoint places, 0 predicate places. [2023-11-30 05:34:38,686 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 185 transitions, 1187 flow [2023-11-30 05:34:38,686 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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) [2023-11-30 05:34:38,702 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/parallel-bakery-4.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 05:34:38,732 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2023-11-30 05:34:38,733 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-30 05:34:38,733 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-30 05:34:38,733 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-30 05:34:38,733 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-30 05:34:38,733 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-30 05:34:38,733 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-30 05:34:38,733 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 20 remaining) [2023-11-30 05:34:38,734 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 20 remaining) [2023-11-30 05:34:38,735 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 20 remaining) [2023-11-30 05:34:38,735 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 05:34:38,735 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:34:38,740 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:34:38,740 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:34:38,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:34:38 BasicIcfg [2023-11-30 05:34:38,746 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:34:38,746 INFO L158 Benchmark]: Toolchain (without parser) took 58223.02ms. Allocated memory was 534.8MB in the beginning and 15.6GB in the end (delta: 15.0GB). Free memory was 489.6MB in the beginning and 8.4GB in the end (delta: -7.9GB). Peak memory consumption was 7.8GB. Max. memory is 16.0GB. [2023-11-30 05:34:38,747 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 356.5MB. Free memory is still 304.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:34:38,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.86ms. Allocated memory is still 534.8MB. Free memory was 489.0MB in the beginning and 475.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 05:34:38,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.61ms. Allocated memory is still 534.8MB. Free memory was 475.5MB in the beginning and 472.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 05:34:38,747 INFO L158 Benchmark]: Boogie Preprocessor took 37.63ms. Allocated memory is still 534.8MB. Free memory was 472.3MB in the beginning and 470.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:34:38,747 INFO L158 Benchmark]: RCFGBuilder took 727.92ms. Allocated memory is still 534.8MB. Free memory was 470.2MB in the beginning and 417.2MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-11-30 05:34:38,748 INFO L158 Benchmark]: TraceAbstraction took 57216.08ms. Allocated memory was 534.8MB in the beginning and 15.6GB in the end (delta: 15.0GB). Free memory was 416.2MB in the beginning and 8.4GB in the end (delta: -8.0GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. [2023-11-30 05:34:38,749 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 356.5MB. Free memory is still 304.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 208.86ms. Allocated memory is still 534.8MB. Free memory was 489.0MB in the beginning and 475.5MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.61ms. Allocated memory is still 534.8MB. Free memory was 475.5MB in the beginning and 472.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.63ms. Allocated memory is still 534.8MB. Free memory was 472.3MB in the beginning and 470.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 727.92ms. Allocated memory is still 534.8MB. Free memory was 470.2MB in the beginning and 417.2MB in the end (delta: 53.0MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * TraceAbstraction took 57216.08ms. Allocated memory was 534.8MB in the beginning and 15.6GB in the end (delta: 15.0GB). Free memory was 416.2MB in the beginning and 8.4GB in the end (delta: -8.0GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 312 locations, 20 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: 57.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 55.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 356 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 50 mSDtfsCounter, 439 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1187occurred in iteration=8, InterpolantAutomatonStates: 24, 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, 1.1s InterpolantComputationTime, 728 NumberOfCodeBlocks, 728 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 720 ConstructedInterpolants, 0 QuantifiedInterpolants, 3970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 05:34:38,767 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...