/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/pthread/queue_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:00:43,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:00:43,609 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 04:00:43,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:00:43,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:00:43,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:00:43,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:00:43,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:00:43,657 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:00:43,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:00:43,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:00:43,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:00:43,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:00:43,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:00:43,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:00:43,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:00:43,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:00:43,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:00:43,667 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:00:43,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:00:43,668 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:00:43,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:00:43,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:00:43,669 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:00:43,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:00:43,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:00:43,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:00:43,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:00:43,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:00:43,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:00:43,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:00:43,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:00:43,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:00:43,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:00:43,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:00:43,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:00:43,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:00:43,915 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:00:43,915 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:00:43,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2023-11-30 04:00:45,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:00:45,375 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:00:45,376 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2023-11-30 04:00:45,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d497042/f5d28685284242c598e56e6e1ac4c5d7/FLAG4d6f875e3 [2023-11-30 04:00:45,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d497042/f5d28685284242c598e56e6e1ac4c5d7 [2023-11-30 04:00:45,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:00:45,412 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:00:45,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:00:45,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:00:45,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:00:45,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:00:45" (1/1) ... [2023-11-30 04:00:45,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4bbe3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:45, skipping insertion in model container [2023-11-30 04:00:45,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:00:45" (1/1) ... [2023-11-30 04:00:45,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:00:45,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:00:45,859 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:00:45,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:00:46,019 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:00:46,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46 WrapperNode [2023-11-30 04:00:46,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:00:46,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:00:46,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:00:46,021 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:00:46,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,104 INFO L138 Inliner]: procedures = 275, calls = 66, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 260 [2023-11-30 04:00:46,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:00:46,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:00:46,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:00:46,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:00:46,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:00:46,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:00:46,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:00:46,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:00:46,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (1/1) ... [2023-11-30 04:00:46,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:00:46,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:00:46,204 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 04:00:46,270 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 04:00:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-30 04:00:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-30 04:00:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-30 04:00:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-30 04:00:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:00:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:00:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:00:46,285 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 04:00:46,496 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:00:46,498 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:00:46,944 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:00:46,970 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:00:46,971 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 04:00:46,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:00:46 BoogieIcfgContainer [2023-11-30 04:00:46,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:00:46,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:00:46,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:00:46,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:00:46,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:00:45" (1/3) ... [2023-11-30 04:00:46,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaa1c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:00:46, skipping insertion in model container [2023-11-30 04:00:46,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:00:46" (2/3) ... [2023-11-30 04:00:46,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eaa1c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:00:46, skipping insertion in model container [2023-11-30 04:00:46,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:00:46" (3/3) ... [2023-11-30 04:00:46,979 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-30 04:00:46,993 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:00:46,993 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-11-30 04:00:46,993 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:00:47,157 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 04:00:47,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 361 transitions, 736 flow [2023-11-30 04:00:47,355 INFO L124 PetriNetUnfolderBase]: 18/359 cut-off events. [2023-11-30 04:00:47,355 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:00:47,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 359 events. 18/359 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 786 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 264. Up to 2 conditions per place. [2023-11-30 04:00:47,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 361 transitions, 736 flow [2023-11-30 04:00:47,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 338 places, 349 transitions, 707 flow [2023-11-30 04:00:47,399 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:00:47,405 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;@5a37976, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:00:47,406 INFO L363 AbstractCegarLoop]: Starting to check reachability of 136 error locations. [2023-11-30 04:00:47,415 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:00:47,415 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-11-30 04:00:47,415 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:00:47,415 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:47,416 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] [2023-11-30 04:00:47,416 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:00:47,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:47,421 INFO L85 PathProgramCache]: Analyzing trace with hash -817170261, now seen corresponding path program 1 times [2023-11-30 04:00:47,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:47,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950171680] [2023-11-30 04:00:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:47,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:00:47,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:47,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950171680] [2023-11-30 04:00:47,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950171680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:47,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:47,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:00:47,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066418607] [2023-11-30 04:00:47,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:47,938 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:00:47,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:47,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:00:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:00:47,968 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 361 [2023-11-30 04:00:47,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 349 transitions, 707 flow. Second operand has 7 states, 7 states have (on average 240.0) internal successors, (1680), 7 states have internal predecessors, (1680), 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 04:00:47,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:47,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 361 [2023-11-30 04:00:47,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:50,715 INFO L124 PetriNetUnfolderBase]: 5809/16873 cut-off events. [2023-11-30 04:00:50,715 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-30 04:00:50,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25820 conditions, 16873 events. 5809/16873 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 173700 event pairs, 5275 based on Foata normal form. 695/13098 useless extension candidates. Maximal degree in co-relation 25385. Up to 8807 conditions per place. [2023-11-30 04:00:50,858 INFO L140 encePairwiseOnDemand]: 345/361 looper letters, 99 selfloop transitions, 6 changer transitions 0/325 dead transitions. [2023-11-30 04:00:50,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 325 transitions, 869 flow [2023-11-30 04:00:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:00:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:00:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1543 transitions. [2023-11-30 04:00:50,903 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7123730378578024 [2023-11-30 04:00:50,904 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1543 transitions. [2023-11-30 04:00:50,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1543 transitions. [2023-11-30 04:00:50,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:50,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1543 transitions. [2023-11-30 04:00:50,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 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 04:00:50,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:00:50,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:00:50,936 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, -11 predicate places. [2023-11-30 04:00:50,936 INFO L500 AbstractCegarLoop]: Abstraction has has 327 places, 325 transitions, 869 flow [2023-11-30 04:00:50,938 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.0) internal successors, (1680), 7 states have internal predecessors, (1680), 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 04:00:50,938 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:50,938 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] [2023-11-30 04:00:50,938 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:00:50,938 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:00:50,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:50,941 INFO L85 PathProgramCache]: Analyzing trace with hash -817170260, now seen corresponding path program 1 times [2023-11-30 04:00:50,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:50,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663431726] [2023-11-30 04:00:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:51,275 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 04:00:51,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:51,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663431726] [2023-11-30 04:00:51,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663431726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:51,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:51,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:00:51,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109488324] [2023-11-30 04:00:51,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:51,278 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:00:51,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:51,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:00:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:00:51,281 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 361 [2023-11-30 04:00:51,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 325 transitions, 869 flow. Second operand has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 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 04:00:51,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:51,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 361 [2023-11-30 04:00:51,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:00:55,567 INFO L124 PetriNetUnfolderBase]: 15728/36043 cut-off events. [2023-11-30 04:00:55,567 INFO L125 PetriNetUnfolderBase]: For 5208/6100 co-relation queries the response was YES. [2023-11-30 04:00:55,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76713 conditions, 36043 events. 15728/36043 cut-off events. For 5208/6100 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 383936 event pairs, 14749 based on Foata normal form. 0/27492 useless extension candidates. Maximal degree in co-relation 75845. Up to 23862 conditions per place. [2023-11-30 04:00:55,852 INFO L140 encePairwiseOnDemand]: 352/361 looper letters, 131 selfloop transitions, 6 changer transitions 0/322 dead transitions. [2023-11-30 04:00:55,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 322 transitions, 1131 flow [2023-11-30 04:00:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:00:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:00:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1358 transitions. [2023-11-30 04:00:55,856 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6269621421975993 [2023-11-30 04:00:55,856 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1358 transitions. [2023-11-30 04:00:55,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1358 transitions. [2023-11-30 04:00:55,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:00:55,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1358 transitions. [2023-11-30 04:00:55,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 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 04:00:55,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:00:55,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:00:55,866 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, -9 predicate places. [2023-11-30 04:00:55,866 INFO L500 AbstractCegarLoop]: Abstraction has has 329 places, 322 transitions, 1131 flow [2023-11-30 04:00:55,867 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 205.0) internal successors, (1435), 7 states have internal predecessors, (1435), 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 04:00:55,868 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:00:55,868 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] [2023-11-30 04:00:55,868 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:00:55,869 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:00:55,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:00:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1873921761, now seen corresponding path program 1 times [2023-11-30 04:00:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:00:55,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916637462] [2023-11-30 04:00:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:00:55,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:00:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:00:56,111 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 04:00:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:00:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916637462] [2023-11-30 04:00:56,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916637462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:00:56,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:00:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:00:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377877628] [2023-11-30 04:00:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:00:56,115 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:00:56,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:00:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:00:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:00:56,122 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 361 [2023-11-30 04:00:56,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 322 transitions, 1131 flow. Second operand has 8 states, 8 states have (on average 237.625) internal successors, (1901), 8 states have internal predecessors, (1901), 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 04:00:56,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:00:56,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 361 [2023-11-30 04:00:56,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:00,210 INFO L124 PetriNetUnfolderBase]: 15728/36041 cut-off events. [2023-11-30 04:01:00,211 INFO L125 PetriNetUnfolderBase]: For 21155/24341 co-relation queries the response was YES. [2023-11-30 04:01:00,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93334 conditions, 36041 events. 15728/36041 cut-off events. For 21155/24341 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 383758 event pairs, 14749 based on Foata normal form. 2/34599 useless extension candidates. Maximal degree in co-relation 92259. Up to 23860 conditions per place. [2023-11-30 04:01:00,505 INFO L140 encePairwiseOnDemand]: 349/361 looper letters, 95 selfloop transitions, 10 changer transitions 0/320 dead transitions. [2023-11-30 04:01:00,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 320 transitions, 1333 flow [2023-11-30 04:01:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-30 04:01:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-30 04:01:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2457 transitions. [2023-11-30 04:01:00,518 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6806094182825485 [2023-11-30 04:01:00,518 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2457 transitions. [2023-11-30 04:01:00,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2457 transitions. [2023-11-30 04:01:00,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:00,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2457 transitions. [2023-11-30 04:01:00,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 245.7) internal successors, (2457), 10 states have internal predecessors, (2457), 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 04:01:00,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 361.0) internal successors, (3971), 11 states have internal predecessors, (3971), 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 04:01:00,533 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 361.0) internal successors, (3971), 11 states have internal predecessors, (3971), 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 04:01:00,534 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, -2 predicate places. [2023-11-30 04:01:00,534 INFO L500 AbstractCegarLoop]: Abstraction has has 336 places, 320 transitions, 1333 flow [2023-11-30 04:01:00,535 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 237.625) internal successors, (1901), 8 states have internal predecessors, (1901), 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 04:01:00,535 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:00,535 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] [2023-11-30 04:01:00,536 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:01:00,536 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:00,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1873921760, now seen corresponding path program 1 times [2023-11-30 04:01:00,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:00,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104003345] [2023-11-30 04:01:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:00,634 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 04:01:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104003345] [2023-11-30 04:01:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104003345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:00,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:00,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:01:00,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526822481] [2023-11-30 04:01:00,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:00,638 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:01:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:00,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:01:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:01:00,642 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 361 [2023-11-30 04:01:00,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 320 transitions, 1333 flow. Second operand has 8 states, 8 states have (on average 234.75) internal successors, (1878), 8 states have internal predecessors, (1878), 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 04:01:00,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:00,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 361 [2023-11-30 04:01:00,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:04,664 INFO L124 PetriNetUnfolderBase]: 15728/36039 cut-off events. [2023-11-30 04:01:04,665 INFO L125 PetriNetUnfolderBase]: For 41949/46844 co-relation queries the response was YES. [2023-11-30 04:01:04,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109950 conditions, 36039 events. 15728/36039 cut-off events. For 41949/46844 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 384197 event pairs, 14749 based on Foata normal form. 0/34597 useless extension candidates. Maximal degree in co-relation 108673. Up to 23858 conditions per place. [2023-11-30 04:01:04,950 INFO L140 encePairwiseOnDemand]: 350/361 looper letters, 95 selfloop transitions, 9 changer transitions 0/318 dead transitions. [2023-11-30 04:01:04,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 318 transitions, 1525 flow [2023-11-30 04:01:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:01:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:01:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2194 transitions. [2023-11-30 04:01:04,956 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.675284702985534 [2023-11-30 04:01:04,956 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2194 transitions. [2023-11-30 04:01:04,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2194 transitions. [2023-11-30 04:01:04,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:04,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2194 transitions. [2023-11-30 04:01:04,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 243.77777777777777) internal successors, (2194), 9 states have internal predecessors, (2194), 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 04:01:04,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:01:04,969 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:01:04,969 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 4 predicate places. [2023-11-30 04:01:04,969 INFO L500 AbstractCegarLoop]: Abstraction has has 342 places, 318 transitions, 1525 flow [2023-11-30 04:01:04,970 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.75) internal successors, (1878), 8 states have internal predecessors, (1878), 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 04:01:04,970 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:04,970 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] [2023-11-30 04:01:04,971 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:01:04,971 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:04,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash 376553368, now seen corresponding path program 1 times [2023-11-30 04:01:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628709532] [2023-11-30 04:01:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:05,072 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 04:01:05,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628709532] [2023-11-30 04:01:05,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628709532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:05,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:05,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:01:05,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313823279] [2023-11-30 04:01:05,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:05,073 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:01:05,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:01:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:01:05,075 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 361 [2023-11-30 04:01:05,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 318 transitions, 1525 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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 04:01:05,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:05,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 361 [2023-11-30 04:01:05,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:08,262 INFO L124 PetriNetUnfolderBase]: 11375/26843 cut-off events. [2023-11-30 04:01:08,262 INFO L125 PetriNetUnfolderBase]: For 57056/61285 co-relation queries the response was YES. [2023-11-30 04:01:08,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94544 conditions, 26843 events. 11375/26843 cut-off events. For 57056/61285 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 278531 event pairs, 10632 based on Foata normal form. 2106/27858 useless extension candidates. Maximal degree in co-relation 93076. Up to 17564 conditions per place. [2023-11-30 04:01:08,434 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 88 selfloop transitions, 1 changer transitions 0/316 dead transitions. [2023-11-30 04:01:08,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 316 transitions, 1687 flow [2023-11-30 04:01:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:01:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:01:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-11-30 04:01:08,436 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7710064635272391 [2023-11-30 04:01:08,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-11-30 04:01:08,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-11-30 04:01:08,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:08,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-11-30 04:01:08,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 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 04:01:08,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:08,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:08,442 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 4 predicate places. [2023-11-30 04:01:08,442 INFO L500 AbstractCegarLoop]: Abstraction has has 342 places, 316 transitions, 1687 flow [2023-11-30 04:01:08,443 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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 04:01:08,443 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:08,443 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] [2023-11-30 04:01:08,443 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:01:08,444 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:08,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash 376553369, now seen corresponding path program 1 times [2023-11-30 04:01:08,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:08,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696580120] [2023-11-30 04:01:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:08,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:08,869 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 04:01:08,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:08,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696580120] [2023-11-30 04:01:08,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696580120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:08,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:08,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-30 04:01:08,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186470185] [2023-11-30 04:01:08,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:08,871 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-30 04:01:08,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:08,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-30 04:01:08,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-30 04:01:08,875 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 361 [2023-11-30 04:01:08,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 316 transitions, 1687 flow. Second operand has 12 states, 12 states have (on average 263.3333333333333) internal successors, (3160), 12 states have internal predecessors, (3160), 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 04:01:08,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:08,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 361 [2023-11-30 04:01:08,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:12,670 INFO L124 PetriNetUnfolderBase]: 11374/26839 cut-off events. [2023-11-30 04:01:12,670 INFO L125 PetriNetUnfolderBase]: For 74437/78931 co-relation queries the response was YES. [2023-11-30 04:01:12,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102194 conditions, 26839 events. 11374/26839 cut-off events. For 74437/78931 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 278196 event pairs, 10632 based on Foata normal form. 0/25749 useless extension candidates. Maximal degree in co-relation 100585. Up to 17564 conditions per place. [2023-11-30 04:01:12,829 INFO L140 encePairwiseOnDemand]: 344/361 looper letters, 58 selfloop transitions, 16 changer transitions 0/312 dead transitions. [2023-11-30 04:01:12,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 312 transitions, 1827 flow [2023-11-30 04:01:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 04:01:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 04:01:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3207 transitions. [2023-11-30 04:01:12,836 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7403047091412742 [2023-11-30 04:01:12,837 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3207 transitions. [2023-11-30 04:01:12,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3207 transitions. [2023-11-30 04:01:12,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:12,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3207 transitions. [2023-11-30 04:01:12,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 267.25) internal successors, (3207), 12 states have internal predecessors, (3207), 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 04:01:12,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:01:12,852 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:01:12,853 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 12 predicate places. [2023-11-30 04:01:12,853 INFO L500 AbstractCegarLoop]: Abstraction has has 350 places, 312 transitions, 1827 flow [2023-11-30 04:01:12,854 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 263.3333333333333) internal successors, (3160), 12 states have internal predecessors, (3160), 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 04:01:12,855 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:12,855 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] [2023-11-30 04:01:12,855 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:01:12,855 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:12,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:12,856 INFO L85 PathProgramCache]: Analyzing trace with hash 534413854, now seen corresponding path program 1 times [2023-11-30 04:01:12,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:12,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284730944] [2023-11-30 04:01:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:12,983 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 04:01:12,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:12,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284730944] [2023-11-30 04:01:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284730944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:12,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:12,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:01:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113730211] [2023-11-30 04:01:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:12,989 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 04:01:12,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:12,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 04:01:12,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 04:01:12,991 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 361 [2023-11-30 04:01:12,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 312 transitions, 1827 flow. Second operand has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 04:01:12,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:12,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 361 [2023-11-30 04:01:12,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:15,281 INFO L124 PetriNetUnfolderBase]: 7021/17643 cut-off events. [2023-11-30 04:01:15,281 INFO L125 PetriNetUnfolderBase]: For 71730/76108 co-relation queries the response was YES. [2023-11-30 04:01:15,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80053 conditions, 17643 events. 7021/17643 cut-off events. For 71730/76108 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 175901 event pairs, 6515 based on Foata normal form. 2106/19010 useless extension candidates. Maximal degree in co-relation 78187. Up to 11270 conditions per place. [2023-11-30 04:01:15,397 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 117 selfloop transitions, 1 changer transitions 0/310 dead transitions. [2023-11-30 04:01:15,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 310 transitions, 2047 flow [2023-11-30 04:01:15,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:01:15,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:01:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 756 transitions. [2023-11-30 04:01:15,399 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6980609418282548 [2023-11-30 04:01:15,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 756 transitions. [2023-11-30 04:01:15,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 756 transitions. [2023-11-30 04:01:15,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:15,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 756 transitions. [2023-11-30 04:01:15,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 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 04:01:15,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:15,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:15,404 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 12 predicate places. [2023-11-30 04:01:15,404 INFO L500 AbstractCegarLoop]: Abstraction has has 350 places, 310 transitions, 2047 flow [2023-11-30 04:01:15,404 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.75) internal successors, (863), 4 states have internal predecessors, (863), 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 04:01:15,404 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:15,404 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] [2023-11-30 04:01:15,404 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:01:15,405 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:15,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1360809092, now seen corresponding path program 1 times [2023-11-30 04:01:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:15,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966855079] [2023-11-30 04:01:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:15,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:15,463 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 04:01:15,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:15,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966855079] [2023-11-30 04:01:15,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966855079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:15,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:15,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:01:15,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176190480] [2023-11-30 04:01:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:15,464 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:01:15,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:01:15,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:01:15,466 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 361 [2023-11-30 04:01:15,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 310 transitions, 2047 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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 04:01:15,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:15,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 361 [2023-11-30 04:01:15,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:17,702 INFO L124 PetriNetUnfolderBase]: 6917/17355 cut-off events. [2023-11-30 04:01:17,702 INFO L125 PetriNetUnfolderBase]: For 94761/99753 co-relation queries the response was YES. [2023-11-30 04:01:17,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86961 conditions, 17355 events. 6917/17355 cut-off events. For 94761/99753 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 172669 event pairs, 6418 based on Foata normal form. 98/16722 useless extension candidates. Maximal degree in co-relation 85300. Up to 11073 conditions per place. [2023-11-30 04:01:17,827 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 86 selfloop transitions, 1 changer transitions 0/308 dead transitions. [2023-11-30 04:01:17,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 308 transitions, 2197 flow [2023-11-30 04:01:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:01:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:01:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-11-30 04:01:17,830 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7691597414589104 [2023-11-30 04:01:17,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-11-30 04:01:17,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-11-30 04:01:17,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:17,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-11-30 04:01:17,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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 04:01:17,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:17,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:17,834 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 12 predicate places. [2023-11-30 04:01:17,834 INFO L500 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 2197 flow [2023-11-30 04:01:17,834 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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 04:01:17,834 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:17,834 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] [2023-11-30 04:01:17,835 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:01:17,835 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:17,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1360809093, now seen corresponding path program 1 times [2023-11-30 04:01:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:17,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529087561] [2023-11-30 04:01:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:17,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:17,913 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 04:01:17,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:17,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529087561] [2023-11-30 04:01:17,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529087561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:17,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:17,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:01:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543495875] [2023-11-30 04:01:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:17,914 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:01:17,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:01:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:01:17,915 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 361 [2023-11-30 04:01:17,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 2197 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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 04:01:17,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:17,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 361 [2023-11-30 04:01:17,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:20,353 INFO L124 PetriNetUnfolderBase]: 6813/17067 cut-off events. [2023-11-30 04:01:20,354 INFO L125 PetriNetUnfolderBase]: For 114097/119762 co-relation queries the response was YES. [2023-11-30 04:01:20,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93738 conditions, 17067 events. 6813/17067 cut-off events. For 114097/119762 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 169059 event pairs, 6321 based on Foata normal form. 98/16442 useless extension candidates. Maximal degree in co-relation 92325. Up to 10876 conditions per place. [2023-11-30 04:01:20,480 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 83 selfloop transitions, 1 changer transitions 0/306 dead transitions. [2023-11-30 04:01:20,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 306 transitions, 2345 flow [2023-11-30 04:01:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:01:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:01:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-11-30 04:01:20,483 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2023-11-30 04:01:20,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-11-30 04:01:20,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-11-30 04:01:20,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:20,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-11-30 04:01:20,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 04:01:20,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:20,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:20,490 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 12 predicate places. [2023-11-30 04:01:20,490 INFO L500 AbstractCegarLoop]: Abstraction has has 350 places, 306 transitions, 2345 flow [2023-11-30 04:01:20,491 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 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 04:01:20,491 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:20,491 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] [2023-11-30 04:01:20,491 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 04:01:20,491 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:20,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:20,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1136486198, now seen corresponding path program 1 times [2023-11-30 04:01:20,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:20,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739839990] [2023-11-30 04:01:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:01:20,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:20,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739839990] [2023-11-30 04:01:20,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739839990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:20,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:01:20,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996013527] [2023-11-30 04:01:20,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:20,599 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:01:20,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:01:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:01:20,601 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 361 [2023-11-30 04:01:20,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 306 transitions, 2345 flow. Second operand has 8 states, 8 states have (on average 217.5) internal successors, (1740), 8 states have internal predecessors, (1740), 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 04:01:20,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:20,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 361 [2023-11-30 04:01:20,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:22,936 INFO L124 PetriNetUnfolderBase]: 5856/14624 cut-off events. [2023-11-30 04:01:22,936 INFO L125 PetriNetUnfolderBase]: For 149381/150464 co-relation queries the response was YES. [2023-11-30 04:01:22,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86740 conditions, 14624 events. 5856/14624 cut-off events. For 149381/150464 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 139726 event pairs, 2449 based on Foata normal form. 1015/15122 useless extension candidates. Maximal degree in co-relation 85197. Up to 8914 conditions per place. [2023-11-30 04:01:23,048 INFO L140 encePairwiseOnDemand]: 332/361 looper letters, 139 selfloop transitions, 13 changer transitions 0/338 dead transitions. [2023-11-30 04:01:23,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 338 transitions, 3267 flow [2023-11-30 04:01:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:01:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:01:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2094 transitions. [2023-11-30 04:01:23,053 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.644506001846722 [2023-11-30 04:01:23,053 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2094 transitions. [2023-11-30 04:01:23,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2094 transitions. [2023-11-30 04:01:23,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:23,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2094 transitions. [2023-11-30 04:01:23,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 232.66666666666666) internal successors, (2094), 9 states have internal predecessors, (2094), 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 04:01:23,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:01:23,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:01:23,062 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 4 predicate places. [2023-11-30 04:01:23,062 INFO L500 AbstractCegarLoop]: Abstraction has has 342 places, 338 transitions, 3267 flow [2023-11-30 04:01:23,062 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 217.5) internal successors, (1740), 8 states have internal predecessors, (1740), 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 04:01:23,062 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:23,063 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] [2023-11-30 04:01:23,063 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 04:01:23,063 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:23,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1136486197, now seen corresponding path program 1 times [2023-11-30 04:01:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:23,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399673312] [2023-11-30 04:01:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:23,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:23,298 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 04:01:23,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399673312] [2023-11-30 04:01:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399673312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:23,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-30 04:01:23,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058349144] [2023-11-30 04:01:23,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:23,299 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:01:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:01:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:01:23,301 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 361 [2023-11-30 04:01:23,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 338 transitions, 3267 flow. Second operand has 10 states, 10 states have (on average 214.1) internal successors, (2141), 10 states have internal predecessors, (2141), 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 04:01:23,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:23,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 361 [2023-11-30 04:01:23,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:25,666 INFO L124 PetriNetUnfolderBase]: 4669/12571 cut-off events. [2023-11-30 04:01:25,666 INFO L125 PetriNetUnfolderBase]: For 138490/139489 co-relation queries the response was YES. [2023-11-30 04:01:25,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76147 conditions, 12571 events. 4669/12571 cut-off events. For 138490/139489 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 119944 event pairs, 1857 based on Foata normal form. 896/12971 useless extension candidates. Maximal degree in co-relation 74471. Up to 6826 conditions per place. [2023-11-30 04:01:25,800 INFO L140 encePairwiseOnDemand]: 329/361 looper letters, 123 selfloop transitions, 18 changer transitions 0/342 dead transitions. [2023-11-30 04:01:25,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 342 transitions, 3561 flow [2023-11-30 04:01:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 04:01:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 04:01:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2687 transitions. [2023-11-30 04:01:25,805 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6202677746999077 [2023-11-30 04:01:25,805 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2687 transitions. [2023-11-30 04:01:25,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2687 transitions. [2023-11-30 04:01:25,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:25,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2687 transitions. [2023-11-30 04:01:25,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 223.91666666666666) internal successors, (2687), 12 states have internal predecessors, (2687), 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 04:01:25,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:01:25,829 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:01:25,830 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 1 predicate places. [2023-11-30 04:01:25,830 INFO L500 AbstractCegarLoop]: Abstraction has has 339 places, 342 transitions, 3561 flow [2023-11-30 04:01:25,831 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.1) internal successors, (2141), 10 states have internal predecessors, (2141), 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 04:01:25,831 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:25,831 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] [2023-11-30 04:01:25,831 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-30 04:01:25,831 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:25,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash -871332960, now seen corresponding path program 1 times [2023-11-30 04:01:25,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:25,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27753000] [2023-11-30 04:01:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:25,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:26,632 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 04:01:26,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:26,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27753000] [2023-11-30 04:01:26,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27753000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:26,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:26,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-30 04:01:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062534814] [2023-11-30 04:01:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:26,633 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-30 04:01:26,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-30 04:01:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-30 04:01:26,636 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 361 [2023-11-30 04:01:26,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 342 transitions, 3561 flow. Second operand has 16 states, 16 states have (on average 180.625) internal successors, (2890), 16 states have internal predecessors, (2890), 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 04:01:26,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:26,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 361 [2023-11-30 04:01:26,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:29,422 INFO L124 PetriNetUnfolderBase]: 5050/13216 cut-off events. [2023-11-30 04:01:29,423 INFO L125 PetriNetUnfolderBase]: For 157813/159101 co-relation queries the response was YES. [2023-11-30 04:01:29,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88829 conditions, 13216 events. 5050/13216 cut-off events. For 157813/159101 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 125312 event pairs, 1836 based on Foata normal form. 64/12766 useless extension candidates. Maximal degree in co-relation 86992. Up to 7694 conditions per place. [2023-11-30 04:01:29,533 INFO L140 encePairwiseOnDemand]: 341/361 looper letters, 212 selfloop transitions, 23 changer transitions 0/393 dead transitions. [2023-11-30 04:01:29,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 393 transitions, 4982 flow [2023-11-30 04:01:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-30 04:01:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-30 04:01:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3019 transitions. [2023-11-30 04:01:29,538 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5226800554016621 [2023-11-30 04:01:29,538 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3019 transitions. [2023-11-30 04:01:29,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3019 transitions. [2023-11-30 04:01:29,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:29,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3019 transitions. [2023-11-30 04:01:29,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 188.6875) internal successors, (3019), 16 states have internal predecessors, (3019), 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 04:01:29,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 361.0) internal successors, (6137), 17 states have internal predecessors, (6137), 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 04:01:29,551 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 361.0) internal successors, (6137), 17 states have internal predecessors, (6137), 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 04:01:29,552 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 16 predicate places. [2023-11-30 04:01:29,552 INFO L500 AbstractCegarLoop]: Abstraction has has 354 places, 393 transitions, 4982 flow [2023-11-30 04:01:29,553 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 180.625) internal successors, (2890), 16 states have internal predecessors, (2890), 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 04:01:29,553 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:29,553 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] [2023-11-30 04:01:29,553 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-30 04:01:29,553 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:29,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:29,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1007428284, now seen corresponding path program 1 times [2023-11-30 04:01:29,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:29,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122857643] [2023-11-30 04:01:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:29,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:29,663 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 04:01:29,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:29,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122857643] [2023-11-30 04:01:29,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122857643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:29,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:01:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379762852] [2023-11-30 04:01:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:29,664 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:01:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:01:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:01:29,666 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 361 [2023-11-30 04:01:29,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 393 transitions, 4982 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 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 04:01:29,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:29,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 361 [2023-11-30 04:01:29,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:31,137 INFO L124 PetriNetUnfolderBase]: 2765/7128 cut-off events. [2023-11-30 04:01:31,137 INFO L125 PetriNetUnfolderBase]: For 103356/103902 co-relation queries the response was YES. [2023-11-30 04:01:31,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52657 conditions, 7128 events. 2765/7128 cut-off events. For 103356/103902 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 55448 event pairs, 792 based on Foata normal form. 0/6892 useless extension candidates. Maximal degree in co-relation 50449. Up to 4503 conditions per place. [2023-11-30 04:01:31,209 INFO L140 encePairwiseOnDemand]: 357/361 looper letters, 36 selfloop transitions, 3 changer transitions 0/379 dead transitions. [2023-11-30 04:01:31,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 379 transitions, 4848 flow [2023-11-30 04:01:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:01:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:01:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-11-30 04:01:31,211 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9445983379501385 [2023-11-30 04:01:31,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-11-30 04:01:31,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-11-30 04:01:31,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:31,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-11-30 04:01:31,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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 04:01:31,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:31,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:01:31,217 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 18 predicate places. [2023-11-30 04:01:31,217 INFO L500 AbstractCegarLoop]: Abstraction has has 356 places, 379 transitions, 4848 flow [2023-11-30 04:01:31,217 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 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 04:01:31,218 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:31,218 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] [2023-11-30 04:01:31,218 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-30 04:01:31,218 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:31,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:31,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1781427125, now seen corresponding path program 1 times [2023-11-30 04:01:31,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:31,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482875570] [2023-11-30 04:01:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:31,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:01:32,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:32,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482875570] [2023-11-30 04:01:32,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482875570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:32,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:32,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-30 04:01:32,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338852970] [2023-11-30 04:01:32,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:32,166 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 04:01:32,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:32,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 04:01:32,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-30 04:01:32,169 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 361 [2023-11-30 04:01:32,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 379 transitions, 4848 flow. Second operand has 18 states, 18 states have (on average 179.38888888888889) internal successors, (3229), 18 states have internal predecessors, (3229), 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 04:01:32,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:32,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 361 [2023-11-30 04:01:32,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:34,175 INFO L124 PetriNetUnfolderBase]: 2758/7081 cut-off events. [2023-11-30 04:01:34,175 INFO L125 PetriNetUnfolderBase]: For 115989/116373 co-relation queries the response was YES. [2023-11-30 04:01:34,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56991 conditions, 7081 events. 2758/7081 cut-off events. For 115989/116373 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 54898 event pairs, 412 based on Foata normal form. 8/6861 useless extension candidates. Maximal degree in co-relation 54602. Up to 4486 conditions per place. [2023-11-30 04:01:34,254 INFO L140 encePairwiseOnDemand]: 340/361 looper letters, 207 selfloop transitions, 27 changer transitions 0/394 dead transitions. [2023-11-30 04:01:34,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 394 transitions, 5752 flow [2023-11-30 04:01:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-30 04:01:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-30 04:01:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3147 transitions. [2023-11-30 04:01:34,259 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.512791266090924 [2023-11-30 04:01:34,259 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3147 transitions. [2023-11-30 04:01:34,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3147 transitions. [2023-11-30 04:01:34,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:34,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3147 transitions. [2023-11-30 04:01:34,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 185.11764705882354) internal successors, (3147), 17 states have internal predecessors, (3147), 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 04:01:34,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 361.0) internal successors, (6498), 18 states have internal predecessors, (6498), 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 04:01:34,271 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 361.0) internal successors, (6498), 18 states have internal predecessors, (6498), 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 04:01:34,272 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 33 predicate places. [2023-11-30 04:01:34,272 INFO L500 AbstractCegarLoop]: Abstraction has has 371 places, 394 transitions, 5752 flow [2023-11-30 04:01:34,273 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 179.38888888888889) internal successors, (3229), 18 states have internal predecessors, (3229), 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 04:01:34,273 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:34,273 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] [2023-11-30 04:01:34,273 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-30 04:01:34,273 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:34,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash 292864336, now seen corresponding path program 1 times [2023-11-30 04:01:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622915850] [2023-11-30 04:01:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:35,151 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 04:01:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622915850] [2023-11-30 04:01:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622915850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:35,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:35,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-30 04:01:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862481385] [2023-11-30 04:01:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:35,152 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-30 04:01:35,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-30 04:01:35,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-30 04:01:35,155 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 361 [2023-11-30 04:01:35,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 394 transitions, 5752 flow. Second operand has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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 04:01:35,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:35,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 361 [2023-11-30 04:01:35,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:37,693 INFO L124 PetriNetUnfolderBase]: 3217/7793 cut-off events. [2023-11-30 04:01:37,694 INFO L125 PetriNetUnfolderBase]: For 167218/167673 co-relation queries the response was YES. [2023-11-30 04:01:37,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68602 conditions, 7793 events. 3217/7793 cut-off events. For 167218/167673 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 59876 event pairs, 414 based on Foata normal form. 2/7562 useless extension candidates. Maximal degree in co-relation 66050. Up to 5026 conditions per place. [2023-11-30 04:01:37,771 INFO L140 encePairwiseOnDemand]: 330/361 looper letters, 238 selfloop transitions, 38 changer transitions 0/459 dead transitions. [2023-11-30 04:01:37,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 459 transitions, 7895 flow [2023-11-30 04:01:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-30 04:01:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-30 04:01:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3701 transitions. [2023-11-30 04:01:37,774 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.539583029596151 [2023-11-30 04:01:37,774 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3701 transitions. [2023-11-30 04:01:37,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3701 transitions. [2023-11-30 04:01:37,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:37,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3701 transitions. [2023-11-30 04:01:37,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 194.78947368421052) internal successors, (3701), 19 states have internal predecessors, (3701), 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 04:01:37,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 361.0) internal successors, (7220), 20 states have internal predecessors, (7220), 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 04:01:37,787 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 361.0) internal successors, (7220), 20 states have internal predecessors, (7220), 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 04:01:37,788 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 51 predicate places. [2023-11-30 04:01:37,788 INFO L500 AbstractCegarLoop]: Abstraction has has 389 places, 459 transitions, 7895 flow [2023-11-30 04:01:37,789 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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 04:01:37,789 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:37,789 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] [2023-11-30 04:01:37,789 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-30 04:01:37,789 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:37,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -610835850, now seen corresponding path program 1 times [2023-11-30 04:01:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026098651] [2023-11-30 04:01:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:37,959 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 04:01:37,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:37,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026098651] [2023-11-30 04:01:37,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026098651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:37,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:37,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:01:37,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945453869] [2023-11-30 04:01:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:37,961 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:01:37,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:01:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:01:37,962 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 361 [2023-11-30 04:01:37,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 459 transitions, 7895 flow. Second operand has 7 states, 7 states have (on average 246.85714285714286) internal successors, (1728), 7 states have internal predecessors, (1728), 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 04:01:37,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:37,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 361 [2023-11-30 04:01:37,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:39,346 INFO L124 PetriNetUnfolderBase]: 3017/7378 cut-off events. [2023-11-30 04:01:39,347 INFO L125 PetriNetUnfolderBase]: For 188651/189114 co-relation queries the response was YES. [2023-11-30 04:01:39,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68159 conditions, 7378 events. 3017/7378 cut-off events. For 188651/189114 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 56086 event pairs, 346 based on Foata normal form. 137/7288 useless extension candidates. Maximal degree in co-relation 65520. Up to 4701 conditions per place. [2023-11-30 04:01:39,427 INFO L140 encePairwiseOnDemand]: 356/361 looper letters, 217 selfloop transitions, 2 changer transitions 0/452 dead transitions. [2023-11-30 04:01:39,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 452 transitions, 8179 flow [2023-11-30 04:01:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:01:39,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:01:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1046 transitions. [2023-11-30 04:01:39,429 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.724376731301939 [2023-11-30 04:01:39,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1046 transitions. [2023-11-30 04:01:39,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1046 transitions. [2023-11-30 04:01:39,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:39,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1046 transitions. [2023-11-30 04:01:39,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 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 04:01:39,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 04:01:39,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 361.0) internal successors, (1805), 5 states have internal predecessors, (1805), 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 04:01:39,433 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 51 predicate places. [2023-11-30 04:01:39,433 INFO L500 AbstractCegarLoop]: Abstraction has has 389 places, 452 transitions, 8179 flow [2023-11-30 04:01:39,433 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.85714285714286) internal successors, (1728), 7 states have internal predecessors, (1728), 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 04:01:39,433 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:39,433 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] [2023-11-30 04:01:39,433 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-30 04:01:39,434 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:39,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:39,434 INFO L85 PathProgramCache]: Analyzing trace with hash -610835849, now seen corresponding path program 1 times [2023-11-30 04:01:39,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:39,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258140482] [2023-11-30 04:01:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:39,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:39,712 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 04:01:39,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:39,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258140482] [2023-11-30 04:01:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258140482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:39,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:39,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:01:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348078638] [2023-11-30 04:01:39,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:39,713 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:01:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:01:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:01:39,715 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 361 [2023-11-30 04:01:39,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 452 transitions, 8179 flow. Second operand has 6 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 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 04:01:39,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:39,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 361 [2023-11-30 04:01:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:41,485 INFO L124 PetriNetUnfolderBase]: 3006/7344 cut-off events. [2023-11-30 04:01:41,485 INFO L125 PetriNetUnfolderBase]: For 211789/212356 co-relation queries the response was YES. [2023-11-30 04:01:41,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71971 conditions, 7344 events. 3006/7344 cut-off events. For 211789/212356 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 55959 event pairs, 352 based on Foata normal form. 9/7125 useless extension candidates. Maximal degree in co-relation 69175. Up to 4682 conditions per place. [2023-11-30 04:01:41,570 INFO L140 encePairwiseOnDemand]: 356/361 looper letters, 241 selfloop transitions, 4 changer transitions 0/451 dead transitions. [2023-11-30 04:01:41,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 451 transitions, 8651 flow [2023-11-30 04:01:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:01:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:01:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1342 transitions. [2023-11-30 04:01:41,572 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6195752539242844 [2023-11-30 04:01:41,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1342 transitions. [2023-11-30 04:01:41,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1342 transitions. [2023-11-30 04:01:41,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:41,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1342 transitions. [2023-11-30 04:01:41,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 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 04:01:41,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:01:41,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:01:41,576 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 55 predicate places. [2023-11-30 04:01:41,576 INFO L500 AbstractCegarLoop]: Abstraction has has 393 places, 451 transitions, 8651 flow [2023-11-30 04:01:41,576 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 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 04:01:41,576 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:41,576 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 04:01:41,576 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-30 04:01:41,576 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:41,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:41,577 INFO L85 PathProgramCache]: Analyzing trace with hash -3942074, now seen corresponding path program 1 times [2023-11-30 04:01:41,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:41,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909110119] [2023-11-30 04:01:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:41,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:41,705 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 04:01:41,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909110119] [2023-11-30 04:01:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909110119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:41,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:01:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728255436] [2023-11-30 04:01:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:41,706 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:01:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:01:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:01:41,708 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 361 [2023-11-30 04:01:41,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 451 transitions, 8651 flow. Second operand has 8 states, 8 states have (on average 236.625) internal successors, (1893), 8 states have internal predecessors, (1893), 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 04:01:41,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:41,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 361 [2023-11-30 04:01:41,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:43,534 INFO L124 PetriNetUnfolderBase]: 3026/7346 cut-off events. [2023-11-30 04:01:43,534 INFO L125 PetriNetUnfolderBase]: For 247233/247838 co-relation queries the response was YES. [2023-11-30 04:01:43,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75817 conditions, 7346 events. 3026/7346 cut-off events. For 247233/247838 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 55828 event pairs, 352 based on Foata normal form. 18/7136 useless extension candidates. Maximal degree in co-relation 72875. Up to 4684 conditions per place. [2023-11-30 04:01:43,629 INFO L140 encePairwiseOnDemand]: 350/361 looper letters, 233 selfloop transitions, 9 changer transitions 0/459 dead transitions. [2023-11-30 04:01:43,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 459 transitions, 9441 flow [2023-11-30 04:01:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:01:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:01:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2181 transitions. [2023-11-30 04:01:43,631 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6712834718374885 [2023-11-30 04:01:43,631 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2181 transitions. [2023-11-30 04:01:43,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2181 transitions. [2023-11-30 04:01:43,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:43,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2181 transitions. [2023-11-30 04:01:43,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 242.33333333333334) internal successors, (2181), 9 states have internal predecessors, (2181), 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 04:01:43,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:01:43,636 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:01:43,636 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 61 predicate places. [2023-11-30 04:01:43,636 INFO L500 AbstractCegarLoop]: Abstraction has has 399 places, 459 transitions, 9441 flow [2023-11-30 04:01:43,637 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 236.625) internal successors, (1893), 8 states have internal predecessors, (1893), 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 04:01:43,637 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:43,637 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 04:01:43,637 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-30 04:01:43,637 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:43,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:43,638 INFO L85 PathProgramCache]: Analyzing trace with hash -3942073, now seen corresponding path program 1 times [2023-11-30 04:01:43,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:43,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386576103] [2023-11-30 04:01:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:44,093 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 04:01:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386576103] [2023-11-30 04:01:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386576103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-30 04:01:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037374176] [2023-11-30 04:01:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:44,094 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:01:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:44,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:01:44,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:01:44,096 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 361 [2023-11-30 04:01:44,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 459 transitions, 9441 flow. Second operand has 10 states, 10 states have (on average 233.0) internal successors, (2330), 10 states have internal predecessors, (2330), 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 04:01:44,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:44,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 361 [2023-11-30 04:01:44,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:46,038 INFO L124 PetriNetUnfolderBase]: 3007/7323 cut-off events. [2023-11-30 04:01:46,039 INFO L125 PetriNetUnfolderBase]: For 274258/274793 co-relation queries the response was YES. [2023-11-30 04:01:46,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79098 conditions, 7323 events. 3007/7323 cut-off events. For 274258/274793 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 55729 event pairs, 346 based on Foata normal form. 18/7114 useless extension candidates. Maximal degree in co-relation 76005. Up to 4646 conditions per place. [2023-11-30 04:01:46,152 INFO L140 encePairwiseOnDemand]: 345/361 looper letters, 218 selfloop transitions, 14 changer transitions 0/457 dead transitions. [2023-11-30 04:01:46,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 457 transitions, 9865 flow [2023-11-30 04:01:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 04:01:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 04:01:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2845 transitions. [2023-11-30 04:01:46,154 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6567405355493998 [2023-11-30 04:01:46,154 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2845 transitions. [2023-11-30 04:01:46,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2845 transitions. [2023-11-30 04:01:46,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:46,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2845 transitions. [2023-11-30 04:01:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 237.08333333333334) internal successors, (2845), 12 states have internal predecessors, (2845), 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 04:01:46,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:01:46,161 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:01:46,161 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 70 predicate places. [2023-11-30 04:01:46,161 INFO L500 AbstractCegarLoop]: Abstraction has has 408 places, 457 transitions, 9865 flow [2023-11-30 04:01:46,161 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 233.0) internal successors, (2330), 10 states have internal predecessors, (2330), 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 04:01:46,161 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:46,162 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, 1, 1, 1, 1, 1, 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 04:01:46,162 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-30 04:01:46,162 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:46,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:46,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1105186070, now seen corresponding path program 1 times [2023-11-30 04:01:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:46,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572669434] [2023-11-30 04:01:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:49,967 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 04:01:49,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:49,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572669434] [2023-11-30 04:01:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572669434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:49,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:49,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-30 04:01:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064684281] [2023-11-30 04:01:49,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:49,969 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-30 04:01:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-30 04:01:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2023-11-30 04:01:49,972 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 361 [2023-11-30 04:01:49,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 457 transitions, 9865 flow. Second operand has 28 states, 28 states have (on average 169.46428571428572) internal successors, (4745), 28 states have internal predecessors, (4745), 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 04:01:49,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:49,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 361 [2023-11-30 04:01:49,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:01:55,421 INFO L124 PetriNetUnfolderBase]: 3598/8484 cut-off events. [2023-11-30 04:01:55,421 INFO L125 PetriNetUnfolderBase]: For 377042/378031 co-relation queries the response was YES. [2023-11-30 04:01:55,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97680 conditions, 8484 events. 3598/8484 cut-off events. For 377042/378031 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 64769 event pairs, 363 based on Foata normal form. 21/8224 useless extension candidates. Maximal degree in co-relation 94130. Up to 5336 conditions per place. [2023-11-30 04:01:55,533 INFO L140 encePairwiseOnDemand]: 323/361 looper letters, 344 selfloop transitions, 60 changer transitions 2/558 dead transitions. [2023-11-30 04:01:55,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 558 transitions, 14159 flow [2023-11-30 04:01:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-30 04:01:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-30 04:01:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 6246 transitions. [2023-11-30 04:01:55,538 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4806094182825485 [2023-11-30 04:01:55,538 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 6246 transitions. [2023-11-30 04:01:55,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 6246 transitions. [2023-11-30 04:01:55,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:01:55,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 6246 transitions. [2023-11-30 04:01:55,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 173.5) internal successors, (6246), 36 states have internal predecessors, (6246), 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 04:01:55,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 361.0) internal successors, (13357), 37 states have internal predecessors, (13357), 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 04:01:55,554 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 361.0) internal successors, (13357), 37 states have internal predecessors, (13357), 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 04:01:55,554 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 105 predicate places. [2023-11-30 04:01:55,555 INFO L500 AbstractCegarLoop]: Abstraction has has 443 places, 558 transitions, 14159 flow [2023-11-30 04:01:55,555 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 169.46428571428572) internal successors, (4745), 28 states have internal predecessors, (4745), 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 04:01:55,555 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:01:55,556 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, 1, 1, 1, 1, 1, 1, 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 04:01:55,556 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-30 04:01:55,556 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:01:55,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:01:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1590831398, now seen corresponding path program 1 times [2023-11-30 04:01:55,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:01:55,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4917549] [2023-11-30 04:01:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:01:55,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:01:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:01:57,556 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 04:01:57,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:01:57,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4917549] [2023-11-30 04:01:57,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4917549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:01:57,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:01:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-11-30 04:01:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792104001] [2023-11-30 04:01:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:01:57,558 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-30 04:01:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:01:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-30 04:01:57,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2023-11-30 04:01:57,561 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 361 [2023-11-30 04:01:57,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 558 transitions, 14159 flow. Second operand has 29 states, 29 states have (on average 166.3448275862069) internal successors, (4824), 29 states have internal predecessors, (4824), 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 04:01:57,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:01:57,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 361 [2023-11-30 04:01:57,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:04,960 INFO L124 PetriNetUnfolderBase]: 6878/16626 cut-off events. [2023-11-30 04:02:04,960 INFO L125 PetriNetUnfolderBase]: For 757235/763578 co-relation queries the response was YES. [2023-11-30 04:02:05,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191772 conditions, 16626 events. 6878/16626 cut-off events. For 757235/763578 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 143917 event pairs, 847 based on Foata normal form. 188/16067 useless extension candidates. Maximal degree in co-relation 185214. Up to 10043 conditions per place. [2023-11-30 04:02:05,194 INFO L140 encePairwiseOnDemand]: 320/361 looper letters, 754 selfloop transitions, 70 changer transitions 2/979 dead transitions. [2023-11-30 04:02:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 979 transitions, 29799 flow [2023-11-30 04:02:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-30 04:02:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-30 04:02:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5707 transitions. [2023-11-30 04:02:05,200 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4940270083102493 [2023-11-30 04:02:05,200 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5707 transitions. [2023-11-30 04:02:05,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5707 transitions. [2023-11-30 04:02:05,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:05,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5707 transitions. [2023-11-30 04:02:05,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 178.34375) internal successors, (5707), 32 states have internal predecessors, (5707), 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 04:02:05,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 361.0) internal successors, (11913), 33 states have internal predecessors, (11913), 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 04:02:05,216 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 361.0) internal successors, (11913), 33 states have internal predecessors, (11913), 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 04:02:05,216 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 136 predicate places. [2023-11-30 04:02:05,216 INFO L500 AbstractCegarLoop]: Abstraction has has 474 places, 979 transitions, 29799 flow [2023-11-30 04:02:05,217 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 166.3448275862069) internal successors, (4824), 29 states have internal predecessors, (4824), 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 04:02:05,217 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:05,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:05,217 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-30 04:02:05,218 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:05,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash -477133247, now seen corresponding path program 1 times [2023-11-30 04:02:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:05,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540921911] [2023-11-30 04:02:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:05,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:07,229 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 04:02:07,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:07,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540921911] [2023-11-30 04:02:07,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540921911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:07,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:07,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2023-11-30 04:02:07,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924441738] [2023-11-30 04:02:07,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:07,230 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-30 04:02:07,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-30 04:02:07,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-11-30 04:02:07,232 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 361 [2023-11-30 04:02:07,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 979 transitions, 29799 flow. Second operand has 26 states, 26 states have (on average 168.69230769230768) internal successors, (4386), 26 states have internal predecessors, (4386), 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 04:02:07,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:07,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 361 [2023-11-30 04:02:07,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:14,648 INFO L124 PetriNetUnfolderBase]: 6973/16801 cut-off events. [2023-11-30 04:02:14,648 INFO L125 PetriNetUnfolderBase]: For 824785/830172 co-relation queries the response was YES. [2023-11-30 04:02:14,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205271 conditions, 16801 events. 6973/16801 cut-off events. For 824785/830172 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 146249 event pairs, 533 based on Foata normal form. 133/16238 useless extension candidates. Maximal degree in co-relation 198168. Up to 10192 conditions per place. [2023-11-30 04:02:14,884 INFO L140 encePairwiseOnDemand]: 324/361 looper letters, 846 selfloop transitions, 81 changer transitions 4/1091 dead transitions. [2023-11-30 04:02:14,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1091 transitions, 36229 flow [2023-11-30 04:02:14,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-30 04:02:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-30 04:02:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5545 transitions. [2023-11-30 04:02:14,890 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4800034626038781 [2023-11-30 04:02:14,890 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5545 transitions. [2023-11-30 04:02:14,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5545 transitions. [2023-11-30 04:02:14,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:14,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5545 transitions. [2023-11-30 04:02:14,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 173.28125) internal successors, (5545), 32 states have internal predecessors, (5545), 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 04:02:14,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 361.0) internal successors, (11913), 33 states have internal predecessors, (11913), 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 04:02:14,905 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 361.0) internal successors, (11913), 33 states have internal predecessors, (11913), 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 04:02:14,906 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 167 predicate places. [2023-11-30 04:02:14,906 INFO L500 AbstractCegarLoop]: Abstraction has has 505 places, 1091 transitions, 36229 flow [2023-11-30 04:02:14,907 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 168.69230769230768) internal successors, (4386), 26 states have internal predecessors, (4386), 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 04:02:14,907 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:14,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:14,907 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-30 04:02:14,907 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:14,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1089893773, now seen corresponding path program 2 times [2023-11-30 04:02:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078172023] [2023-11-30 04:02:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:16,832 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 04:02:16,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:16,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078172023] [2023-11-30 04:02:16,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078172023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:16,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:16,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-30 04:02:16,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035493452] [2023-11-30 04:02:16,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:16,833 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-30 04:02:16,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-30 04:02:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2023-11-30 04:02:16,836 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 361 [2023-11-30 04:02:16,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 1091 transitions, 36229 flow. Second operand has 28 states, 28 states have (on average 168.5) internal successors, (4718), 28 states have internal predecessors, (4718), 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 04:02:16,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:16,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 361 [2023-11-30 04:02:16,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:24,378 INFO L124 PetriNetUnfolderBase]: 6975/16756 cut-off events. [2023-11-30 04:02:24,379 INFO L125 PetriNetUnfolderBase]: For 891829/898047 co-relation queries the response was YES. [2023-11-30 04:02:24,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215942 conditions, 16756 events. 6975/16756 cut-off events. For 891829/898047 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 145624 event pairs, 535 based on Foata normal form. 152/16214 useless extension candidates. Maximal degree in co-relation 208498. Up to 10191 conditions per place. [2023-11-30 04:02:24,615 INFO L140 encePairwiseOnDemand]: 324/361 looper letters, 855 selfloop transitions, 80 changer transitions 4/1099 dead transitions. [2023-11-30 04:02:24,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 1099 transitions, 38461 flow [2023-11-30 04:02:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-30 04:02:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-30 04:02:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 5020 transitions. [2023-11-30 04:02:24,619 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4795109370522495 [2023-11-30 04:02:24,619 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 5020 transitions. [2023-11-30 04:02:24,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 5020 transitions. [2023-11-30 04:02:24,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:24,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 5020 transitions. [2023-11-30 04:02:24,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 173.10344827586206) internal successors, (5020), 29 states have internal predecessors, (5020), 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 04:02:24,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 361.0) internal successors, (10830), 30 states have internal predecessors, (10830), 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 04:02:24,633 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 361.0) internal successors, (10830), 30 states have internal predecessors, (10830), 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 04:02:24,634 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 195 predicate places. [2023-11-30 04:02:24,634 INFO L500 AbstractCegarLoop]: Abstraction has has 533 places, 1099 transitions, 38461 flow [2023-11-30 04:02:24,634 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 168.5) internal successors, (4718), 28 states have internal predecessors, (4718), 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 04:02:24,635 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:24,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:24,635 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-30 04:02:24,635 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:24,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1565800729, now seen corresponding path program 1 times [2023-11-30 04:02:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:24,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790038702] [2023-11-30 04:02:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:24,916 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 04:02:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790038702] [2023-11-30 04:02:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790038702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:24,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:02:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399437625] [2023-11-30 04:02:24,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:24,918 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:02:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:02:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:02:24,920 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 361 [2023-11-30 04:02:24,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1099 transitions, 38461 flow. Second operand has 8 states, 8 states have (on average 209.125) internal successors, (1673), 8 states have internal predecessors, (1673), 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 04:02:24,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:24,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 361 [2023-11-30 04:02:24,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:32,337 INFO L124 PetriNetUnfolderBase]: 9108/21208 cut-off events. [2023-11-30 04:02:32,338 INFO L125 PetriNetUnfolderBase]: For 1406601/1414936 co-relation queries the response was YES. [2023-11-30 04:02:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282677 conditions, 21208 events. 9108/21208 cut-off events. For 1406601/1414936 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 189003 event pairs, 469 based on Foata normal form. 97/20258 useless extension candidates. Maximal degree in co-relation 274761. Up to 12637 conditions per place. [2023-11-30 04:02:32,691 INFO L140 encePairwiseOnDemand]: 354/361 looper letters, 1044 selfloop transitions, 5 changer transitions 4/1316 dead transitions. [2023-11-30 04:02:32,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1316 transitions, 50389 flow [2023-11-30 04:02:32,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:02:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:02:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1354 transitions. [2023-11-30 04:02:32,693 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6251154201292706 [2023-11-30 04:02:32,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1354 transitions. [2023-11-30 04:02:32,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1354 transitions. [2023-11-30 04:02:32,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:32,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1354 transitions. [2023-11-30 04:02:32,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.66666666666666) internal successors, (1354), 6 states have internal predecessors, (1354), 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 04:02:32,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:02:32,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 361.0) internal successors, (2527), 7 states have internal predecessors, (2527), 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 04:02:32,698 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 200 predicate places. [2023-11-30 04:02:32,698 INFO L500 AbstractCegarLoop]: Abstraction has has 538 places, 1316 transitions, 50389 flow [2023-11-30 04:02:32,698 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 209.125) internal successors, (1673), 8 states have internal predecessors, (1673), 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 04:02:32,698 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:32,698 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:32,698 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-30 04:02:32,699 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:32,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:32,701 INFO L85 PathProgramCache]: Analyzing trace with hash 560730454, now seen corresponding path program 1 times [2023-11-30 04:02:32,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:32,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194775786] [2023-11-30 04:02:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:32,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:02:32,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:32,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194775786] [2023-11-30 04:02:32,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194775786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:32,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:32,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:02:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703105895] [2023-11-30 04:02:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:32,762 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:02:32,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:32,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:02:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:02:32,763 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 361 [2023-11-30 04:02:32,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1316 transitions, 50389 flow. Second operand has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 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 04:02:32,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:32,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 361 [2023-11-30 04:02:32,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:35,791 INFO L124 PetriNetUnfolderBase]: 3322/8262 cut-off events. [2023-11-30 04:02:35,791 INFO L125 PetriNetUnfolderBase]: For 682544/685673 co-relation queries the response was YES. [2023-11-30 04:02:35,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109310 conditions, 8262 events. 3322/8262 cut-off events. For 682544/685673 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 64075 event pairs, 248 based on Foata normal form. 5/7756 useless extension candidates. Maximal degree in co-relation 102854. Up to 4409 conditions per place. [2023-11-30 04:02:35,898 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 288 selfloop transitions, 5 changer transitions 7/802 dead transitions. [2023-11-30 04:02:35,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 802 transitions, 29405 flow [2023-11-30 04:02:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:02:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:02:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1022 transitions. [2023-11-30 04:02:35,900 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9436749769159741 [2023-11-30 04:02:35,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1022 transitions. [2023-11-30 04:02:35,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1022 transitions. [2023-11-30 04:02:35,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:35,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1022 transitions. [2023-11-30 04:02:35,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 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 04:02:35,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:02:35,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:02:35,903 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 200 predicate places. [2023-11-30 04:02:35,903 INFO L500 AbstractCegarLoop]: Abstraction has has 538 places, 802 transitions, 29405 flow [2023-11-30 04:02:35,903 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 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 04:02:35,903 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:35,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:35,904 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-30 04:02:35,904 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:35,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1087407215, now seen corresponding path program 1 times [2023-11-30 04:02:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:35,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506651318] [2023-11-30 04:02:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:35,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:35,994 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 04:02:35,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506651318] [2023-11-30 04:02:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506651318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:02:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530148690] [2023-11-30 04:02:35,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:35,995 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:02:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:02:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:02:35,996 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 361 [2023-11-30 04:02:35,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 802 transitions, 29405 flow. Second operand has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 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 04:02:35,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:35,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 361 [2023-11-30 04:02:35,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:37,510 INFO L124 PetriNetUnfolderBase]: 1922/5630 cut-off events. [2023-11-30 04:02:37,510 INFO L125 PetriNetUnfolderBase]: For 549166/552608 co-relation queries the response was YES. [2023-11-30 04:02:37,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65184 conditions, 5630 events. 1922/5630 cut-off events. For 549166/552608 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 41672 event pairs, 212 based on Foata normal form. 575/5840 useless extension candidates. Maximal degree in co-relation 58402. Up to 2599 conditions per place. [2023-11-30 04:02:37,570 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 101 selfloop transitions, 45 changer transitions 43/689 dead transitions. [2023-11-30 04:02:37,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 689 transitions, 23973 flow [2023-11-30 04:02:37,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:02:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:02:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2023-11-30 04:02:37,571 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9390581717451524 [2023-11-30 04:02:37,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2023-11-30 04:02:37,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2023-11-30 04:02:37,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:37,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2023-11-30 04:02:37,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 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 04:02:37,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:02:37,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 361.0) internal successors, (1444), 4 states have internal predecessors, (1444), 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 04:02:37,573 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 202 predicate places. [2023-11-30 04:02:37,574 INFO L500 AbstractCegarLoop]: Abstraction has has 540 places, 689 transitions, 23973 flow [2023-11-30 04:02:37,574 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 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 04:02:37,574 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:37,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:37,574 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-30 04:02:37,574 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:37,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash -190263379, now seen corresponding path program 1 times [2023-11-30 04:02:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:37,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586397302] [2023-11-30 04:02:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:37,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:37,916 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 04:02:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586397302] [2023-11-30 04:02:37,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586397302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:37,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:37,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-30 04:02:37,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552600089] [2023-11-30 04:02:37,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:37,917 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:02:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:02:37,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:02:37,919 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 361 [2023-11-30 04:02:37,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 689 transitions, 23973 flow. Second operand has 10 states, 10 states have (on average 228.6) internal successors, (2286), 10 states have internal predecessors, (2286), 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 04:02:37,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:37,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 361 [2023-11-30 04:02:37,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:39,485 INFO L124 PetriNetUnfolderBase]: 1776/5274 cut-off events. [2023-11-30 04:02:39,485 INFO L125 PetriNetUnfolderBase]: For 474485/476181 co-relation queries the response was YES. [2023-11-30 04:02:39,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64413 conditions, 5274 events. 1776/5274 cut-off events. For 474485/476181 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 38113 event pairs, 184 based on Foata normal form. 158/5095 useless extension candidates. Maximal degree in co-relation 57671. Up to 2419 conditions per place. [2023-11-30 04:02:39,544 INFO L140 encePairwiseOnDemand]: 340/361 looper letters, 401 selfloop transitions, 15 changer transitions 43/685 dead transitions. [2023-11-30 04:02:39,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 685 transitions, 25095 flow [2023-11-30 04:02:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 04:02:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 04:02:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2775 transitions. [2023-11-30 04:02:39,565 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6405817174515236 [2023-11-30 04:02:39,565 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2775 transitions. [2023-11-30 04:02:39,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2775 transitions. [2023-11-30 04:02:39,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:39,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2775 transitions. [2023-11-30 04:02:39,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.25) internal successors, (2775), 12 states have internal predecessors, (2775), 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 04:02:39,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:02:39,572 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 361.0) internal successors, (4693), 13 states have internal predecessors, (4693), 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 04:02:39,572 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 206 predicate places. [2023-11-30 04:02:39,573 INFO L500 AbstractCegarLoop]: Abstraction has has 544 places, 685 transitions, 25095 flow [2023-11-30 04:02:39,573 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 228.6) internal successors, (2286), 10 states have internal predecessors, (2286), 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 04:02:39,573 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:39,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:39,574 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-30 04:02:39,574 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:39,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -190263380, now seen corresponding path program 1 times [2023-11-30 04:02:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:39,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822602972] [2023-11-30 04:02:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:39,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:39,734 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 04:02:39,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822602972] [2023-11-30 04:02:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822602972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:39,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:39,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:02:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714656300] [2023-11-30 04:02:39,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:39,735 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:02:39,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:02:39,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:02:39,737 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 361 [2023-11-30 04:02:39,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 685 transitions, 25095 flow. Second operand has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 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 04:02:39,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:39,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 361 [2023-11-30 04:02:39,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:41,214 INFO L124 PetriNetUnfolderBase]: 1514/4749 cut-off events. [2023-11-30 04:02:41,214 INFO L125 PetriNetUnfolderBase]: For 472462/474138 co-relation queries the response was YES. [2023-11-30 04:02:41,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59304 conditions, 4749 events. 1514/4749 cut-off events. For 472462/474138 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33619 event pairs, 135 based on Foata normal form. 212/4667 useless extension candidates. Maximal degree in co-relation 53485. Up to 2109 conditions per place. [2023-11-30 04:02:41,262 INFO L140 encePairwiseOnDemand]: 344/361 looper letters, 375 selfloop transitions, 10 changer transitions 43/661 dead transitions. [2023-11-30 04:02:41,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 661 transitions, 24991 flow [2023-11-30 04:02:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:02:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:02:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2023-11-30 04:02:41,264 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6525084641428132 [2023-11-30 04:02:41,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2023-11-30 04:02:41,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2023-11-30 04:02:41,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:41,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2023-11-30 04:02:41,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 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 04:02:41,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:02:41,269 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 361.0) internal successors, (3610), 10 states have internal predecessors, (3610), 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 04:02:41,269 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 206 predicate places. [2023-11-30 04:02:41,269 INFO L500 AbstractCegarLoop]: Abstraction has has 544 places, 661 transitions, 24991 flow [2023-11-30 04:02:41,270 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 232.625) internal successors, (1861), 8 states have internal predecessors, (1861), 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 04:02:41,270 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:41,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:41,270 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-30 04:02:41,270 INFO L425 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:41,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1603196499, now seen corresponding path program 1 times [2023-11-30 04:02:41,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:41,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915322115] [2023-11-30 04:02:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:41,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:42,383 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 04:02:42,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:42,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915322115] [2023-11-30 04:02:42,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915322115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:42,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:42,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-30 04:02:42,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11035594] [2023-11-30 04:02:42,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:42,384 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-30 04:02:42,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:42,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-30 04:02:42,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-30 04:02:42,386 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 361 [2023-11-30 04:02:42,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 661 transitions, 24991 flow. Second operand has 19 states, 19 states have (on average 173.1578947368421) internal successors, (3290), 19 states have internal predecessors, (3290), 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 04:02:42,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:42,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 361 [2023-11-30 04:02:42,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:44,295 INFO L124 PetriNetUnfolderBase]: 1517/4722 cut-off events. [2023-11-30 04:02:44,296 INFO L125 PetriNetUnfolderBase]: For 475495/477163 co-relation queries the response was YES. [2023-11-30 04:02:44,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62000 conditions, 4722 events. 1517/4722 cut-off events. For 475495/477163 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33260 event pairs, 135 based on Foata normal form. 0/4436 useless extension candidates. Maximal degree in co-relation 55965. Up to 2126 conditions per place. [2023-11-30 04:02:44,486 INFO L140 encePairwiseOnDemand]: 331/361 looper letters, 422 selfloop transitions, 53 changer transitions 43/687 dead transitions. [2023-11-30 04:02:44,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 687 transitions, 27323 flow [2023-11-30 04:02:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-30 04:02:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-30 04:02:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3525 transitions. [2023-11-30 04:02:44,489 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.48822714681440443 [2023-11-30 04:02:44,489 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3525 transitions. [2023-11-30 04:02:44,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3525 transitions. [2023-11-30 04:02:44,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:44,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3525 transitions. [2023-11-30 04:02:44,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 176.25) internal successors, (3525), 20 states have internal predecessors, (3525), 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 04:02:44,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 361.0) internal successors, (7581), 21 states have internal predecessors, (7581), 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 04:02:44,498 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 361.0) internal successors, (7581), 21 states have internal predecessors, (7581), 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 04:02:44,498 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 225 predicate places. [2023-11-30 04:02:44,498 INFO L500 AbstractCegarLoop]: Abstraction has has 563 places, 687 transitions, 27323 flow [2023-11-30 04:02:44,499 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 173.1578947368421) internal successors, (3290), 19 states have internal predecessors, (3290), 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 04:02:44,499 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:44,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:44,499 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-30 04:02:44,499 INFO L425 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:44,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 838679639, now seen corresponding path program 2 times [2023-11-30 04:02:44,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:44,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670182783] [2023-11-30 04:02:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:45,535 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 04:02:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:45,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670182783] [2023-11-30 04:02:45,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670182783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:45,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:45,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-30 04:02:45,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564473050] [2023-11-30 04:02:45,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:45,536 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 04:02:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:45,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 04:02:45,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-30 04:02:45,538 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 361 [2023-11-30 04:02:45,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 687 transitions, 27323 flow. Second operand has 18 states, 18 states have (on average 187.33333333333334) internal successors, (3372), 18 states have internal predecessors, (3372), 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 04:02:45,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:45,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 361 [2023-11-30 04:02:45,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:47,353 INFO L124 PetriNetUnfolderBase]: 1086/3491 cut-off events. [2023-11-30 04:02:47,353 INFO L125 PetriNetUnfolderBase]: For 357158/358482 co-relation queries the response was YES. [2023-11-30 04:02:47,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46577 conditions, 3491 events. 1086/3491 cut-off events. For 357158/358482 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 22404 event pairs, 100 based on Foata normal form. 0/3284 useless extension candidates. Maximal degree in co-relation 42061. Up to 1535 conditions per place. [2023-11-30 04:02:47,398 INFO L140 encePairwiseOnDemand]: 340/361 looper letters, 336 selfloop transitions, 34 changer transitions 30/566 dead transitions. [2023-11-30 04:02:47,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 566 transitions, 21914 flow [2023-11-30 04:02:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-30 04:02:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-30 04:02:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3227 transitions. [2023-11-30 04:02:47,402 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5258269512791266 [2023-11-30 04:02:47,402 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3227 transitions. [2023-11-30 04:02:47,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3227 transitions. [2023-11-30 04:02:47,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:47,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3227 transitions. [2023-11-30 04:02:47,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 189.8235294117647) internal successors, (3227), 17 states have internal predecessors, (3227), 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 04:02:47,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 361.0) internal successors, (6498), 18 states have internal predecessors, (6498), 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 04:02:47,410 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 361.0) internal successors, (6498), 18 states have internal predecessors, (6498), 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 04:02:47,410 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 230 predicate places. [2023-11-30 04:02:47,410 INFO L500 AbstractCegarLoop]: Abstraction has has 568 places, 566 transitions, 21914 flow [2023-11-30 04:02:47,411 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 187.33333333333334) internal successors, (3372), 18 states have internal predecessors, (3372), 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 04:02:47,411 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:47,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:47,411 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-30 04:02:47,411 INFO L425 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:47,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1529085012, now seen corresponding path program 1 times [2023-11-30 04:02:47,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:47,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138925800] [2023-11-30 04:02:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:47,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:02:49,238 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 04:02:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:02:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138925800] [2023-11-30 04:02:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138925800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:02:49,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:02:49,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2023-11-30 04:02:49,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840985750] [2023-11-30 04:02:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:02:49,239 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-30 04:02:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:02:49,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-30 04:02:49,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2023-11-30 04:02:49,243 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 361 [2023-11-30 04:02:49,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 566 transitions, 21914 flow. Second operand has 31 states, 31 states have (on average 158.90322580645162) internal successors, (4926), 31 states have internal predecessors, (4926), 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 04:02:49,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:02:49,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 361 [2023-11-30 04:02:49,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:02:51,633 INFO L124 PetriNetUnfolderBase]: 1084/3479 cut-off events. [2023-11-30 04:02:51,633 INFO L125 PetriNetUnfolderBase]: For 382846/384340 co-relation queries the response was YES. [2023-11-30 04:02:51,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48152 conditions, 3479 events. 1084/3479 cut-off events. For 382846/384340 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 22126 event pairs, 103 based on Foata normal form. 8/3285 useless extension candidates. Maximal degree in co-relation 43476. Up to 1527 conditions per place. [2023-11-30 04:02:51,684 INFO L140 encePairwiseOnDemand]: 321/361 looper letters, 323 selfloop transitions, 77 changer transitions 30/572 dead transitions. [2023-11-30 04:02:51,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 572 transitions, 22925 flow [2023-11-30 04:02:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-30 04:02:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-30 04:02:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5020 transitions. [2023-11-30 04:02:51,688 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4485747475650076 [2023-11-30 04:02:51,689 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5020 transitions. [2023-11-30 04:02:51,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5020 transitions. [2023-11-30 04:02:51,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:02:51,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5020 transitions. [2023-11-30 04:02:51,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 161.93548387096774) internal successors, (5020), 31 states have internal predecessors, (5020), 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 04:02:51,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 361.0) internal successors, (11552), 32 states have internal predecessors, (11552), 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 04:02:51,701 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 361.0) internal successors, (11552), 32 states have internal predecessors, (11552), 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 04:02:51,701 INFO L307 CegarLoopForPetriNet]: 338 programPoint places, 260 predicate places. [2023-11-30 04:02:51,701 INFO L500 AbstractCegarLoop]: Abstraction has has 598 places, 572 transitions, 22925 flow [2023-11-30 04:02:51,702 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 158.90322580645162) internal successors, (4926), 31 states have internal predecessors, (4926), 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 04:02:51,702 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:02:51,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:51,702 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-30 04:02:51,702 INFO L425 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 133 more)] === [2023-11-30 04:02:51,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:02:51,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1695799099, now seen corresponding path program 1 times [2023-11-30 04:02:51,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:02:51,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460283417] [2023-11-30 04:02:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:02:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:02:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-11-30 04:13:53,089 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 04:13:53,143 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-30 04:13:53,144 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:219) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:148) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-30 04:13:53,147 INFO L158 Benchmark]: Toolchain (without parser) took 787734.54ms. Allocated memory was 526.4MB in the beginning and 14.7GB in the end (delta: 14.2GB). Free memory was 473.0MB in the beginning and 7.7GB in the end (delta: -7.2GB). Peak memory consumption was 12.9GB. Max. memory is 16.0GB. [2023-11-30 04:13:53,147 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 337.6MB. Free memory is still 289.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:13:53,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 607.33ms. Allocated memory is still 526.4MB. Free memory was 472.7MB in the beginning and 488.7MB in the end (delta: -16.0MB). Peak memory consumption was 32.7MB. Max. memory is 16.0GB. [2023-11-30 04:13:53,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.00ms. Allocated memory is still 526.4MB. Free memory was 488.7MB in the beginning and 485.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:13:53,148 INFO L158 Benchmark]: Boogie Preprocessor took 60.42ms. Allocated memory is still 526.4MB. Free memory was 485.7MB in the beginning and 483.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:13:53,148 INFO L158 Benchmark]: RCFGBuilder took 806.41ms. Allocated memory is still 526.4MB. Free memory was 483.0MB in the beginning and 447.3MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-11-30 04:13:53,148 INFO L158 Benchmark]: TraceAbstraction took 786172.22ms. Allocated memory was 526.4MB in the beginning and 14.7GB in the end (delta: 14.2GB). Free memory was 446.5MB in the beginning and 7.7GB in the end (delta: -7.2GB). Peak memory consumption was 12.9GB. Max. memory is 16.0GB. [2023-11-30 04:13:53,149 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 337.6MB. Free memory is still 289.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 607.33ms. Allocated memory is still 526.4MB. Free memory was 472.7MB in the beginning and 488.7MB in the end (delta: -16.0MB). Peak memory consumption was 32.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 83.00ms. Allocated memory is still 526.4MB. Free memory was 488.7MB in the beginning and 485.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.42ms. Allocated memory is still 526.4MB. Free memory was 485.7MB in the beginning and 483.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 806.41ms. Allocated memory is still 526.4MB. Free memory was 483.0MB in the beginning and 447.3MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 786172.22ms. Allocated memory was 526.4MB in the beginning and 14.7GB in the end (delta: 14.2GB). Free memory was 446.5MB in the beginning and 7.7GB in the end (delta: -7.2GB). Peak memory consumption was 12.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown