/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/goblint-regression/28-race_reach_94-alloc_region_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:30:39,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:30:39,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 05:30:39,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:30:39,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:30:39,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:30:39,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:30:39,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:30:39,557 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:30:39,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:30:39,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:30:39,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:30:39,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:30:39,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:30:39,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:30:39,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:30:39,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:30:39,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:30:39,562 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:30:39,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:30:39,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:30:39,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:30:39,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:30:39,563 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:30:39,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:30:39,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:30:39,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:30:39,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:30:39,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:30:39,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:30:39,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:30:39,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:30:39,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:30:39,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:30:39,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:30:39,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:30:39,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:30:39,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:30:39,755 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:30:39,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-30 05:30:40,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:30:41,210 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:30:41,210 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_94-alloc_region_racing.i [2023-11-30 05:30:41,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2789bfa/fdd9b5a4e1154d338b685ddc4e404768/FLAG673aa0cdd [2023-11-30 05:30:41,251 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a2789bfa/fdd9b5a4e1154d338b685ddc4e404768 [2023-11-30 05:30:41,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:30:41,253 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:30:41,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:30:41,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:30:41,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:30:41,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1455b577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41, skipping insertion in model container [2023-11-30 05:30:41,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:30:41,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:30:41,638 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:30:41,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:30:41,738 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:30:41,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41 WrapperNode [2023-11-30 05:30:41,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:30:41,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:30:41,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:30:41,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:30:41,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,814 INFO L138 Inliner]: procedures = 378, calls = 83, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 275 [2023-11-30 05:30:41,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:30:41,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:30:41,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:30:41,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:30:41,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:30:41,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:30:41,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:30:41,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:30:41,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (1/1) ... [2023-11-30 05:30:41,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:30:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:30:41,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 05:30:41,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 05:30:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:30:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-30 05:30:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:30:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-30 05:30:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 05:30:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:30:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:30:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 05:30:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 05:30:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:30:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-30 05:30:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-30 05:30:41,920 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-30 05:30:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:30:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:30:41,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:30:41,921 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 05:30:42,066 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:30:42,069 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:30:42,524 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:30:42,547 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:30:42,548 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-30 05:30:42,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:30:42 BoogieIcfgContainer [2023-11-30 05:30:42,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:30:42,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:30:42,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:30:42,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:30:42,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:30:41" (1/3) ... [2023-11-30 05:30:42,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315d7d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:30:42, skipping insertion in model container [2023-11-30 05:30:42,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:30:41" (2/3) ... [2023-11-30 05:30:42,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315d7d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:30:42, skipping insertion in model container [2023-11-30 05:30:42,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:30:42" (3/3) ... [2023-11-30 05:30:42,554 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_94-alloc_region_racing.i [2023-11-30 05:30:42,565 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:30:42,565 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-11-30 05:30:42,566 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:30:42,637 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-30 05:30:42,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 330 transitions, 667 flow [2023-11-30 05:30:42,804 INFO L124 PetriNetUnfolderBase]: 48/480 cut-off events. [2023-11-30 05:30:42,804 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 05:30:42,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 480 events. 48/480 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1858 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 267. Up to 8 conditions per place. [2023-11-30 05:30:42,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 330 transitions, 667 flow [2023-11-30 05:30:42,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 330 transitions, 667 flow [2023-11-30 05:30:42,836 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:30:42,842 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;@4a92fefa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:30:42,842 INFO L363 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-30 05:30:42,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:30:42,847 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-11-30 05:30:42,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:30:42,847 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:42,848 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] [2023-11-30 05:30:42,848 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:42,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:42,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1081377721, now seen corresponding path program 1 times [2023-11-30 05:30:42,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:42,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036069919] [2023-11-30 05:30:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036069919] [2023-11-30 05:30:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036069919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:43,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:43,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 05:30:43,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94948111] [2023-11-30 05:30:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:43,225 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 05:30:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:43,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 05:30:43,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 05:30:43,256 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 330 [2023-11-30 05:30:43,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 330 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:43,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:43,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 330 [2023-11-30 05:30:43,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:44,375 INFO L124 PetriNetUnfolderBase]: 1442/6031 cut-off events. [2023-11-30 05:30:44,376 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 05:30:44,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8928 conditions, 6031 events. 1442/6031 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 58748 event pairs, 1344 based on Foata normal form. 741/5617 useless extension candidates. Maximal degree in co-relation 8666. Up to 2820 conditions per place. [2023-11-30 05:30:44,397 INFO L140 encePairwiseOnDemand]: 297/330 looper letters, 122 selfloop transitions, 3 changer transitions 3/326 dead transitions. [2023-11-30 05:30:44,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 326 transitions, 915 flow [2023-11-30 05:30:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 05:30:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 05:30:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 978 transitions. [2023-11-30 05:30:44,411 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2023-11-30 05:30:44,412 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 978 transitions. [2023-11-30 05:30:44,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 978 transitions. [2023-11-30 05:30:44,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:44,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 978 transitions. [2023-11-30 05:30:44,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:44,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:44,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:44,426 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, -6 predicate places. [2023-11-30 05:30:44,426 INFO L500 AbstractCegarLoop]: Abstraction has has 296 places, 326 transitions, 915 flow [2023-11-30 05:30:44,427 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:44,427 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:44,427 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] [2023-11-30 05:30:44,427 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:30:44,427 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:44,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1081377720, now seen corresponding path program 1 times [2023-11-30 05:30:44,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:44,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687236171] [2023-11-30 05:30:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:44,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:44,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687236171] [2023-11-30 05:30:44,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687236171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:44,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:44,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 05:30:44,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539283586] [2023-11-30 05:30:44,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:44,623 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 05:30:44,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 05:30:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 05:30:44,625 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 330 [2023-11-30 05:30:44,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 326 transitions, 915 flow. Second operand has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:44,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:44,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 330 [2023-11-30 05:30:44,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:45,663 INFO L124 PetriNetUnfolderBase]: 2437/8490 cut-off events. [2023-11-30 05:30:45,663 INFO L125 PetriNetUnfolderBase]: For 1598/1969 co-relation queries the response was YES. [2023-11-30 05:30:45,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17139 conditions, 8490 events. 2437/8490 cut-off events. For 1598/1969 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 87091 event pairs, 2310 based on Foata normal form. 2/6980 useless extension candidates. Maximal degree in co-relation 16805. Up to 4788 conditions per place. [2023-11-30 05:30:45,704 INFO L140 encePairwiseOnDemand]: 323/330 looper letters, 190 selfloop transitions, 4 changer transitions 8/374 dead transitions. [2023-11-30 05:30:45,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 374 transitions, 1471 flow [2023-11-30 05:30:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 05:30:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 05:30:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1085 transitions. [2023-11-30 05:30:45,706 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6575757575757576 [2023-11-30 05:30:45,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1085 transitions. [2023-11-30 05:30:45,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1085 transitions. [2023-11-30 05:30:45,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:45,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1085 transitions. [2023-11-30 05:30:45,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:45,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:45,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:45,714 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, -5 predicate places. [2023-11-30 05:30:45,714 INFO L500 AbstractCegarLoop]: Abstraction has has 297 places, 374 transitions, 1471 flow [2023-11-30 05:30:45,715 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:45,715 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:45,715 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] [2023-11-30 05:30:45,715 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:30:45,715 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:45,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash -372585645, now seen corresponding path program 1 times [2023-11-30 05:30:45,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:45,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005821391] [2023-11-30 05:30:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:45,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:45,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005821391] [2023-11-30 05:30:45,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005821391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:45,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:45,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 05:30:45,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173048346] [2023-11-30 05:30:45,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:45,902 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 05:30:45,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 05:30:45,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-30 05:30:45,906 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 330 [2023-11-30 05:30:45,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 374 transitions, 1471 flow. Second operand has 7 states, 7 states have (on average 186.57142857142858) internal successors, (1306), 7 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:45,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:45,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 330 [2023-11-30 05:30:45,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:47,405 INFO L124 PetriNetUnfolderBase]: 2627/8963 cut-off events. [2023-11-30 05:30:47,405 INFO L125 PetriNetUnfolderBase]: For 5048/5936 co-relation queries the response was YES. [2023-11-30 05:30:47,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22165 conditions, 8963 events. 2627/8963 cut-off events. For 5048/5936 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 91460 event pairs, 2371 based on Foata normal form. 0/7417 useless extension candidates. Maximal degree in co-relation 21763. Up to 4902 conditions per place. [2023-11-30 05:30:47,445 INFO L140 encePairwiseOnDemand]: 315/330 looper letters, 183 selfloop transitions, 12 changer transitions 8/403 dead transitions. [2023-11-30 05:30:47,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 403 transitions, 2051 flow [2023-11-30 05:30:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 05:30:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 05:30:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2351 transitions. [2023-11-30 05:30:47,449 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5936868686868687 [2023-11-30 05:30:47,449 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2351 transitions. [2023-11-30 05:30:47,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2351 transitions. [2023-11-30 05:30:47,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:47,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2351 transitions. [2023-11-30 05:30:47,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.91666666666666) internal successors, (2351), 12 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:47,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 330.0) internal successors, (4290), 13 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:47,460 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 330.0) internal successors, (4290), 13 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:47,461 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, 3 predicate places. [2023-11-30 05:30:47,461 INFO L500 AbstractCegarLoop]: Abstraction has has 305 places, 403 transitions, 2051 flow [2023-11-30 05:30:47,462 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 186.57142857142858) internal successors, (1306), 7 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:47,462 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:47,462 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] [2023-11-30 05:30:47,462 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:30:47,462 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash -372585644, now seen corresponding path program 1 times [2023-11-30 05:30:47,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:47,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651724394] [2023-11-30 05:30:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:47,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:47,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651724394] [2023-11-30 05:30:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651724394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:47,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:47,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 05:30:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140492920] [2023-11-30 05:30:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:47,659 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 05:30:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 05:30:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-30 05:30:47,662 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 330 [2023-11-30 05:30:47,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 403 transitions, 2051 flow. Second operand has 7 states, 7 states have (on average 188.42857142857142) internal successors, (1319), 7 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:47,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:47,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 330 [2023-11-30 05:30:47,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:48,987 INFO L124 PetriNetUnfolderBase]: 2690/9031 cut-off events. [2023-11-30 05:30:48,988 INFO L125 PetriNetUnfolderBase]: For 12493/14387 co-relation queries the response was YES. [2023-11-30 05:30:48,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26523 conditions, 9031 events. 2690/9031 cut-off events. For 12493/14387 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 91721 event pairs, 2424 based on Foata normal form. 2/8609 useless extension candidates. Maximal degree in co-relation 26054. Up to 4908 conditions per place. [2023-11-30 05:30:49,029 INFO L140 encePairwiseOnDemand]: 318/330 looper letters, 171 selfloop transitions, 10 changer transitions 8/401 dead transitions. [2023-11-30 05:30:49,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 401 transitions, 2417 flow [2023-11-30 05:30:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-30 05:30:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-30 05:30:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2152 transitions. [2023-11-30 05:30:49,104 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5928374655647383 [2023-11-30 05:30:49,104 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2152 transitions. [2023-11-30 05:30:49,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2152 transitions. [2023-11-30 05:30:49,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:49,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2152 transitions. [2023-11-30 05:30:49,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.63636363636363) internal successors, (2152), 11 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:49,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 330.0) internal successors, (3960), 12 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:49,113 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 330.0) internal successors, (3960), 12 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:49,126 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, 11 predicate places. [2023-11-30 05:30:49,127 INFO L500 AbstractCegarLoop]: Abstraction has has 313 places, 401 transitions, 2417 flow [2023-11-30 05:30:49,127 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.42857142857142) internal successors, (1319), 7 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:49,127 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:49,127 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] [2023-11-30 05:30:49,128 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:30:49,128 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:49,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 733423321, now seen corresponding path program 1 times [2023-11-30 05:30:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:49,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785003631] [2023-11-30 05:30:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:49,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:49,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785003631] [2023-11-30 05:30:49,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785003631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:49,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:49,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:30:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875494101] [2023-11-30 05:30:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:49,250 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:30:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:30:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:30:49,251 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 330 [2023-11-30 05:30:49,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 401 transitions, 2417 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:49,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:49,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 330 [2023-11-30 05:30:49,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:50,266 INFO L124 PetriNetUnfolderBase]: 2666/8920 cut-off events. [2023-11-30 05:30:50,266 INFO L125 PetriNetUnfolderBase]: For 21002/23542 co-relation queries the response was YES. [2023-11-30 05:30:50,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30039 conditions, 8920 events. 2666/8920 cut-off events. For 21002/23542 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 89791 event pairs, 2371 based on Foata normal form. 83/8588 useless extension candidates. Maximal degree in co-relation 29519. Up to 4736 conditions per place. [2023-11-30 05:30:50,312 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 171 selfloop transitions, 2 changer transitions 8/399 dead transitions. [2023-11-30 05:30:50,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 399 transitions, 2763 flow [2023-11-30 05:30:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:30:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:30:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2023-11-30 05:30:50,314 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7414141414141414 [2023-11-30 05:30:50,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2023-11-30 05:30:50,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2023-11-30 05:30:50,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:50,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2023-11-30 05:30:50,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:50,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:50,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:50,319 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, 11 predicate places. [2023-11-30 05:30:50,319 INFO L500 AbstractCegarLoop]: Abstraction has has 313 places, 399 transitions, 2763 flow [2023-11-30 05:30:50,319 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:50,319 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:50,319 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] [2023-11-30 05:30:50,319 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 05:30:50,319 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:50,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash 733423322, now seen corresponding path program 1 times [2023-11-30 05:30:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214020042] [2023-11-30 05:30:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:50,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:50,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214020042] [2023-11-30 05:30:50,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214020042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:50,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:50,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:30:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599884030] [2023-11-30 05:30:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:50,432 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:30:50,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:30:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:30:50,434 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 330 [2023-11-30 05:30:50,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 399 transitions, 2763 flow. Second operand has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:50,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:50,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 330 [2023-11-30 05:30:50,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:51,575 INFO L124 PetriNetUnfolderBase]: 2864/9354 cut-off events. [2023-11-30 05:30:51,575 INFO L125 PetriNetUnfolderBase]: For 31242/33443 co-relation queries the response was YES. [2023-11-30 05:30:51,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35360 conditions, 9354 events. 2864/9354 cut-off events. For 31242/33443 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 91992 event pairs, 2447 based on Foata normal form. 1/8955 useless extension candidates. Maximal degree in co-relation 35132. Up to 4889 conditions per place. [2023-11-30 05:30:51,631 INFO L140 encePairwiseOnDemand]: 323/330 looper letters, 175 selfloop transitions, 6 changer transitions 8/411 dead transitions. [2023-11-30 05:30:51,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 411 transitions, 3221 flow [2023-11-30 05:30:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 05:30:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 05:30:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 905 transitions. [2023-11-30 05:30:51,633 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6856060606060606 [2023-11-30 05:30:51,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 905 transitions. [2023-11-30 05:30:51,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 905 transitions. [2023-11-30 05:30:51,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:51,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 905 transitions. [2023-11-30 05:30:51,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.25) internal successors, (905), 4 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:51,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:51,637 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:51,639 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, 14 predicate places. [2023-11-30 05:30:51,639 INFO L500 AbstractCegarLoop]: Abstraction has has 316 places, 411 transitions, 3221 flow [2023-11-30 05:30:51,639 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:51,640 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:51,640 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] [2023-11-30 05:30:51,640 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 05:30:51,640 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:51,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash 279552724, now seen corresponding path program 1 times [2023-11-30 05:30:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309026824] [2023-11-30 05:30:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:51,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:51,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309026824] [2023-11-30 05:30:51,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309026824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 05:30:51,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074788974] [2023-11-30 05:30:51,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:51,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:30:51,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:30:51,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 05:30:51,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 05:30:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:51,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-30 05:30:51,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 05:30:51,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 05:30:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:52,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 05:30:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074788974] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 05:30:52,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 05:30:52,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-30 05:30:52,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89540666] [2023-11-30 05:30:52,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 05:30:52,259 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-30 05:30:52,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:52,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-30 05:30:52,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-30 05:30:52,260 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 330 [2023-11-30 05:30:52,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 411 transitions, 3221 flow. Second operand has 11 states, 11 states have (on average 201.27272727272728) internal successors, (2214), 11 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:52,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:52,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 330 [2023-11-30 05:30:52,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:53,804 INFO L124 PetriNetUnfolderBase]: 2678/7847 cut-off events. [2023-11-30 05:30:53,804 INFO L125 PetriNetUnfolderBase]: For 38312/39713 co-relation queries the response was YES. [2023-11-30 05:30:53,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35958 conditions, 7847 events. 2678/7847 cut-off events. For 38312/39713 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 73939 event pairs, 583 based on Foata normal form. 36/7567 useless extension candidates. Maximal degree in co-relation 35678. Up to 4681 conditions per place. [2023-11-30 05:30:53,838 INFO L140 encePairwiseOnDemand]: 320/330 looper letters, 288 selfloop transitions, 14 changer transitions 3/515 dead transitions. [2023-11-30 05:30:53,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 515 transitions, 5107 flow [2023-11-30 05:30:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-30 05:30:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-30 05:30:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2634 transitions. [2023-11-30 05:30:53,843 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6651515151515152 [2023-11-30 05:30:53,843 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2634 transitions. [2023-11-30 05:30:53,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2634 transitions. [2023-11-30 05:30:53,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:53,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2634 transitions. [2023-11-30 05:30:53,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 219.5) internal successors, (2634), 12 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:53,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 330.0) internal successors, (4290), 13 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:53,853 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 330.0) internal successors, (4290), 13 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:53,853 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, 24 predicate places. [2023-11-30 05:30:53,853 INFO L500 AbstractCegarLoop]: Abstraction has has 326 places, 515 transitions, 5107 flow [2023-11-30 05:30:53,854 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 201.27272727272728) internal successors, (2214), 11 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:53,854 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:53,854 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 05:30:53,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 05:30:54,059 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:30:54,059 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:54,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash 27209356, now seen corresponding path program 1 times [2023-11-30 05:30:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083579873] [2023-11-30 05:30:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:54,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083579873] [2023-11-30 05:30:54,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083579873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:54,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:54,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 05:30:54,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933609827] [2023-11-30 05:30:54,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:54,134 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 05:30:54,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 05:30:54,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-30 05:30:54,136 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 330 [2023-11-30 05:30:54,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 515 transitions, 5107 flow. Second operand has 6 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:54,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:54,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 330 [2023-11-30 05:30:54,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:55,458 INFO L124 PetriNetUnfolderBase]: 2580/8048 cut-off events. [2023-11-30 05:30:55,458 INFO L125 PetriNetUnfolderBase]: For 55673/56732 co-relation queries the response was YES. [2023-11-30 05:30:55,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38720 conditions, 8048 events. 2580/8048 cut-off events. For 55673/56732 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 74472 event pairs, 336 based on Foata normal form. 459/8240 useless extension candidates. Maximal degree in co-relation 38446. Up to 4232 conditions per place. [2023-11-30 05:30:55,496 INFO L140 encePairwiseOnDemand]: 308/330 looper letters, 438 selfloop transitions, 21 changer transitions 8/674 dead transitions. [2023-11-30 05:30:55,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 674 transitions, 8269 flow [2023-11-30 05:30:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 05:30:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 05:30:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1853 transitions. [2023-11-30 05:30:55,500 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7018939393939394 [2023-11-30 05:30:55,500 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1853 transitions. [2023-11-30 05:30:55,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1853 transitions. [2023-11-30 05:30:55,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:55,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1853 transitions. [2023-11-30 05:30:55,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 231.625) internal successors, (1853), 8 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:55,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 330.0) internal successors, (2970), 9 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:55,506 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 330.0) internal successors, (2970), 9 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:55,506 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, 31 predicate places. [2023-11-30 05:30:55,506 INFO L500 AbstractCegarLoop]: Abstraction has has 333 places, 674 transitions, 8269 flow [2023-11-30 05:30:55,506 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:55,507 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:55,507 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 05:30:55,507 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 05:30:55,507 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:55,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash 27209357, now seen corresponding path program 1 times [2023-11-30 05:30:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609823154] [2023-11-30 05:30:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:55,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:55,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609823154] [2023-11-30 05:30:55,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609823154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:55,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:55,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 05:30:55,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177356933] [2023-11-30 05:30:55,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:55,632 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 05:30:55,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:55,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 05:30:55,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-30 05:30:55,633 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 330 [2023-11-30 05:30:55,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 674 transitions, 8269 flow. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:55,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:55,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 330 [2023-11-30 05:30:55,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:30:57,055 INFO L124 PetriNetUnfolderBase]: 2217/7506 cut-off events. [2023-11-30 05:30:57,055 INFO L125 PetriNetUnfolderBase]: For 62306/65542 co-relation queries the response was YES. [2023-11-30 05:30:57,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37060 conditions, 7506 events. 2217/7506 cut-off events. For 62306/65542 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 68305 event pairs, 1412 based on Foata normal form. 523/7724 useless extension candidates. Maximal degree in co-relation 36773. Up to 3502 conditions per place. [2023-11-30 05:30:57,096 INFO L140 encePairwiseOnDemand]: 316/330 looper letters, 398 selfloop transitions, 17 changer transitions 15/673 dead transitions. [2023-11-30 05:30:57,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 673 transitions, 9037 flow [2023-11-30 05:30:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 05:30:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 05:30:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1628 transitions. [2023-11-30 05:30:57,100 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2023-11-30 05:30:57,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1628 transitions. [2023-11-30 05:30:57,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1628 transitions. [2023-11-30 05:30:57,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:30:57,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1628 transitions. [2023-11-30 05:30:57,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 232.57142857142858) internal successors, (1628), 7 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:57,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:57,105 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 330.0) internal successors, (2640), 8 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:57,106 INFO L307 CegarLoopForPetriNet]: 302 programPoint places, 30 predicate places. [2023-11-30 05:30:57,106 INFO L500 AbstractCegarLoop]: Abstraction has has 332 places, 673 transitions, 9037 flow [2023-11-30 05:30:57,106 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:57,106 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:57,106 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 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] [2023-11-30 05:30:57,106 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 05:30:57,106 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-30 05:30:57,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash 76200770, now seen corresponding path program 1 times [2023-11-30 05:30:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:57,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514821264] [2023-11-30 05:30:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 05:30:57,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 05:30:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 05:30:57,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 05:30:57,145 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 05:30:57,145 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (78 of 79 remaining) [2023-11-30 05:30:57,146 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 79 remaining) [2023-11-30 05:30:57,147 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 79 remaining) [2023-11-30 05:30:57,148 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 79 remaining) [2023-11-30 05:30:57,149 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 79 remaining) [2023-11-30 05:30:57,150 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 79 remaining) [2023-11-30 05:30:57,151 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 79 remaining) [2023-11-30 05:30:57,152 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 79 remaining) [2023-11-30 05:30:57,153 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 79 remaining) [2023-11-30 05:30:57,154 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 79 remaining) [2023-11-30 05:30:57,154 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 79 remaining) [2023-11-30 05:30:57,154 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 79 remaining) [2023-11-30 05:30:57,154 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 05:30:57,154 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:30:57,156 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 05:30:57,156 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 05:30:57,200 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 05:30:57,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 444 transitions, 904 flow [2023-11-30 05:30:57,287 INFO L124 PetriNetUnfolderBase]: 81/772 cut-off events. [2023-11-30 05:30:57,287 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-30 05:30:57,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 772 events. 81/772 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3766 event pairs, 0 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 482. Up to 12 conditions per place. [2023-11-30 05:30:57,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 444 transitions, 904 flow [2023-11-30 05:30:57,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 444 transitions, 904 flow [2023-11-30 05:30:57,307 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:30:57,307 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;@4a92fefa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:30:57,307 INFO L363 AbstractCegarLoop]: Starting to check reachability of 99 error locations. [2023-11-30 05:30:57,309 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:30:57,309 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-11-30 05:30:57,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:30:57,309 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:30:57,309 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] [2023-11-30 05:30:57,309 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 96 more)] === [2023-11-30 05:30:57,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:30:57,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1154268803, now seen corresponding path program 1 times [2023-11-30 05:30:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:30:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455524748] [2023-11-30 05:30:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:30:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:30:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:30:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:30:57,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:30:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455524748] [2023-11-30 05:30:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455524748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:30:57,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:30:57,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 05:30:57,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866804886] [2023-11-30 05:30:57,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:30:57,388 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 05:30:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:30:57,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 05:30:57,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 05:30:57,390 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 444 [2023-11-30 05:30:57,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 444 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:30:57,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:30:57,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 444 [2023-11-30 05:30:57,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:31:25,658 INFO L124 PetriNetUnfolderBase]: 95486/247002 cut-off events. [2023-11-30 05:31:25,658 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-11-30 05:31:26,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390249 conditions, 247002 events. 95486/247002 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 4475. Compared 3601804 event pairs, 91232 based on Foata normal form. 37547/231227 useless extension candidates. Maximal degree in co-relation 346192. Up to 139714 conditions per place. [2023-11-30 05:31:27,478 INFO L140 encePairwiseOnDemand]: 399/444 looper letters, 191 selfloop transitions, 3 changer transitions 0/457 dead transitions. [2023-11-30 05:31:27,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 457 transitions, 1318 flow [2023-11-30 05:31:27,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 05:31:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 05:31:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1336 transitions. [2023-11-30 05:31:27,504 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7522522522522522 [2023-11-30 05:31:27,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1336 transitions. [2023-11-30 05:31:27,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1336 transitions. [2023-11-30 05:31:27,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:31:27,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1336 transitions. [2023-11-30 05:31:27,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:31:27,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 444.0) internal successors, (2220), 5 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:31:27,508 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 444.0) internal successors, (2220), 5 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:31:27,509 INFO L307 CegarLoopForPetriNet]: 404 programPoint places, -9 predicate places. [2023-11-30 05:31:27,509 INFO L500 AbstractCegarLoop]: Abstraction has has 395 places, 457 transitions, 1318 flow [2023-11-30 05:31:27,510 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:31:27,510 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:31:27,510 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] [2023-11-30 05:31:27,510 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-30 05:31:27,510 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 96 more)] === [2023-11-30 05:31:27,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:31:27,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1154268804, now seen corresponding path program 1 times [2023-11-30 05:31:27,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:31:27,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077262501] [2023-11-30 05:31:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:31:27,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:31:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:31:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:31:27,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:31:27,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077262501] [2023-11-30 05:31:27,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077262501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:31:27,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:31:27,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 05:31:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291032928] [2023-11-30 05:31:27,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:31:27,687 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 05:31:27,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:31:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 05:31:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 05:31:27,688 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 444 [2023-11-30 05:31:27,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 457 transitions, 1318 flow. Second operand has 5 states, 5 states have (on average 235.2) internal successors, (1176), 5 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:31:27,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:31:27,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 444 [2023-11-30 05:31:27,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:32:33,717 INFO L124 PetriNetUnfolderBase]: 211977/473769 cut-off events. [2023-11-30 05:32:33,717 INFO L125 PetriNetUnfolderBase]: For 82896/108565 co-relation queries the response was YES. [2023-11-30 05:32:34,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034232 conditions, 473769 events. 211977/473769 cut-off events. For 82896/108565 co-relation queries the response was YES. Maximal size of possible extension queue 8960. Compared 6888278 event pairs, 202986 based on Foata normal form. 200/382636 useless extension candidates. Maximal degree in co-relation 921620. Up to 309314 conditions per place. [2023-11-30 05:32:37,908 INFO L140 encePairwiseOnDemand]: 436/444 looper letters, 326 selfloop transitions, 5 changer transitions 0/558 dead transitions. [2023-11-30 05:32:37,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 558 transitions, 2304 flow [2023-11-30 05:32:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 05:32:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 05:32:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1499 transitions. [2023-11-30 05:32:37,915 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6752252252252252 [2023-11-30 05:32:37,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1499 transitions. [2023-11-30 05:32:37,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1499 transitions. [2023-11-30 05:32:37,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:32:37,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1499 transitions. [2023-11-30 05:32:37,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 299.8) internal successors, (1499), 5 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:32:37,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 444.0) internal successors, (2664), 6 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:32:37,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 444.0) internal successors, (2664), 6 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:32:37,950 INFO L307 CegarLoopForPetriNet]: 404 programPoint places, -8 predicate places. [2023-11-30 05:32:37,950 INFO L500 AbstractCegarLoop]: Abstraction has has 396 places, 558 transitions, 2304 flow [2023-11-30 05:32:37,951 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 235.2) internal successors, (1176), 5 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:32:37,951 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:32:37,951 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] [2023-11-30 05:32:37,951 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-30 05:32:37,951 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 96 more)] === [2023-11-30 05:32:37,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:32:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1576638675, now seen corresponding path program 1 times [2023-11-30 05:32:37,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:32:37,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812670014] [2023-11-30 05:32:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:32:37,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:32:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:32:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:32:38,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:32:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812670014] [2023-11-30 05:32:38,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812670014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:32:38,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:32:38,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 05:32:38,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582911175] [2023-11-30 05:32:38,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:32:38,076 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 05:32:38,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:32:38,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 05:32:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-30 05:32:38,078 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 444 [2023-11-30 05:32:38,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 558 transitions, 2304 flow. Second operand has 7 states, 7 states have (on average 253.57142857142858) internal successors, (1775), 7 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:32:38,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:32:38,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 444 [2023-11-30 05:32:38,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand