/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:34:49,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:34:49,666 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 04:34:49,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:34:49,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:34:49,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:34:49,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:34:49,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:34:49,709 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:34:49,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:34:49,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:34:49,713 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:34:49,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:34:49,714 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:34:49,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:34:49,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:34:49,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:34:49,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:34:49,715 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:34:49,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:34:49,716 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:34:49,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:34:49,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:34:49,717 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:34:49,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:34:49,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:34:49,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:34:49,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:34:49,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:34:49,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:34:49,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:34:49,720 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:34:49,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:34:49,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:34:49,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:34:49,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:34:49,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:34:49,992 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:34:49,993 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:34:49,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-11-30 04:34:51,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:34:51,358 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:34:51,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-11-30 04:34:51,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ba35e0b/eab6cec6e6994c17821785ba043c132f/FLAG1392b6996 [2023-11-30 04:34:51,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0ba35e0b/eab6cec6e6994c17821785ba043c132f [2023-11-30 04:34:51,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:34:51,399 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:34:51,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:34:51,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:34:51,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:34:51,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661a7b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51, skipping insertion in model container [2023-11-30 04:34:51,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,452 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:34:51,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:34:51,787 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:34:51,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:34:51,852 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:34:51,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51 WrapperNode [2023-11-30 04:34:51,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:34:51,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:34:51,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:34:51,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:34:51,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,893 INFO L138 Inliner]: procedures = 172, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 128 [2023-11-30 04:34:51,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:34:51,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:34:51,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:34:51,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:34:51,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:34:51,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:34:51,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:34:51,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:34:51,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (1/1) ... [2023-11-30 04:34:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:34:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:34:51,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 04:34:51,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 04:34:52,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:34:52,001 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-30 04:34:52,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-30 04:34:52,001 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-30 04:34:52,001 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-30 04:34:52,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:34:52,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:34:52,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:34:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:34:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:34:52,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:34:52,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:34:52,004 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 04:34:52,158 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:34:52,193 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:34:52,487 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:34:52,631 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:34:52,631 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 04:34:52,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:34:52 BoogieIcfgContainer [2023-11-30 04:34:52,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:34:52,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:34:52,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:34:52,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:34:52,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:34:51" (1/3) ... [2023-11-30 04:34:52,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8757508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:34:52, skipping insertion in model container [2023-11-30 04:34:52,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:34:51" (2/3) ... [2023-11-30 04:34:52,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8757508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:34:52, skipping insertion in model container [2023-11-30 04:34:52,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:34:52" (3/3) ... [2023-11-30 04:34:52,639 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-11-30 04:34:52,652 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:34:52,652 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-30 04:34:52,652 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:34:52,717 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:34:52,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 108 transitions, 224 flow [2023-11-30 04:34:52,906 INFO L124 PetriNetUnfolderBase]: 7/120 cut-off events. [2023-11-30 04:34:52,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:34:52,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 120 events. 7/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 269 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2023-11-30 04:34:52,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 108 transitions, 224 flow [2023-11-30 04:34:52,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 107 transitions, 221 flow [2023-11-30 04:34:52,950 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:34:52,956 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;@5b92d2df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:34:52,956 INFO L363 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-11-30 04:34:52,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:34:52,961 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-30 04:34:52,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:34:52,961 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:52,962 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:34:52,962 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-11-30 04:34:52,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1432605793, now seen corresponding path program 1 times [2023-11-30 04:34:52,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:52,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250349824] [2023-11-30 04:34:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:52,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:53,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:53,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250349824] [2023-11-30 04:34:53,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250349824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:53,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:53,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:34:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094009234] [2023-11-30 04:34:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:53,388 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:34:53,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:34:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:34:53,447 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 108 [2023-11-30 04:34:53,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:53,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:53,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 108 [2023-11-30 04:34:53,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:34:53,779 INFO L124 PetriNetUnfolderBase]: 543/1239 cut-off events. [2023-11-30 04:34:53,779 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-30 04:34:53,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2096 conditions, 1239 events. 543/1239 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8057 event pairs, 412 based on Foata normal form. 262/942 useless extension candidates. Maximal degree in co-relation 2062. Up to 832 conditions per place. [2023-11-30 04:34:53,793 INFO L140 encePairwiseOnDemand]: 87/108 looper letters, 29 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-11-30 04:34:53,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 221 flow [2023-11-30 04:34:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:34:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:34:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2023-11-30 04:34:53,805 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2023-11-30 04:34:53,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2023-11-30 04:34:53,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2023-11-30 04:34:53,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:34:53,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2023-11-30 04:34:53,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:53,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:53,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:53,821 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, -24 predicate places. [2023-11-30 04:34:53,822 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 221 flow [2023-11-30 04:34:53,822 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:53,822 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:53,822 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:34:53,822 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:34:53,823 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-11-30 04:34:53,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1432605792, now seen corresponding path program 1 times [2023-11-30 04:34:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:53,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542405910] [2023-11-30 04:34:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:53,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:53,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542405910] [2023-11-30 04:34:53,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542405910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:53,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:53,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:34:53,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128808435] [2023-11-30 04:34:53,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:53,968 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:34:53,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:53,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:34:53,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:34:53,970 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 108 [2023-11-30 04:34:53,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:53,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:53,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 108 [2023-11-30 04:34:53,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:34:54,096 INFO L124 PetriNetUnfolderBase]: 334/863 cut-off events. [2023-11-30 04:34:54,097 INFO L125 PetriNetUnfolderBase]: For 70/128 co-relation queries the response was YES. [2023-11-30 04:34:54,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 863 events. 334/863 cut-off events. For 70/128 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5234 event pairs, 245 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1901. Up to 524 conditions per place. [2023-11-30 04:34:54,105 INFO L140 encePairwiseOnDemand]: 105/108 looper letters, 26 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-11-30 04:34:54,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 267 flow [2023-11-30 04:34:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:34:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:34:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-11-30 04:34:54,108 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2023-11-30 04:34:54,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-11-30 04:34:54,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-11-30 04:34:54,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:34:54,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-11-30 04:34:54,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,116 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, -24 predicate places. [2023-11-30 04:34:54,117 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 267 flow [2023-11-30 04:34:54,117 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,117 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:54,117 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] [2023-11-30 04:34:54,117 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:34:54,117 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-11-30 04:34:54,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1682459687, now seen corresponding path program 1 times [2023-11-30 04:34:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:54,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460788406] [2023-11-30 04:34:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:54,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:54,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460788406] [2023-11-30 04:34:54,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460788406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:34:54,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172521491] [2023-11-30 04:34:54,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:54,328 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:34:54,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:54,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:34:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:34:54,332 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 108 [2023-11-30 04:34:54,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 267 flow. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:54,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 108 [2023-11-30 04:34:54,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:34:54,437 INFO L124 PetriNetUnfolderBase]: 159/496 cut-off events. [2023-11-30 04:34:54,438 INFO L125 PetriNetUnfolderBase]: For 148/212 co-relation queries the response was YES. [2023-11-30 04:34:54,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 496 events. 159/496 cut-off events. For 148/212 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2592 event pairs, 115 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 1244. Up to 258 conditions per place. [2023-11-30 04:34:54,442 INFO L140 encePairwiseOnDemand]: 100/108 looper letters, 22 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-30 04:34:54,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 279 flow [2023-11-30 04:34:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:34:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:34:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2023-11-30 04:34:54,447 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2023-11-30 04:34:54,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 238 transitions. [2023-11-30 04:34:54,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 238 transitions. [2023-11-30 04:34:54,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:34:54,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 238 transitions. [2023-11-30 04:34:54,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,450 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,451 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2023-11-30 04:34:54,452 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 279 flow [2023-11-30 04:34:54,452 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,452 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:54,452 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] [2023-11-30 04:34:54,452 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:34:54,453 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-11-30 04:34:54,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1682459688, now seen corresponding path program 1 times [2023-11-30 04:34:54,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:54,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435950594] [2023-11-30 04:34:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:54,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:54,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435950594] [2023-11-30 04:34:54,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435950594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:54,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:54,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:34:54,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266327173] [2023-11-30 04:34:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:54,667 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:34:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:34:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:34:54,673 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 108 [2023-11-30 04:34:54,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:54,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 108 [2023-11-30 04:34:54,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:34:54,723 INFO L124 PetriNetUnfolderBase]: 48/233 cut-off events. [2023-11-30 04:34:54,724 INFO L125 PetriNetUnfolderBase]: For 191/233 co-relation queries the response was YES. [2023-11-30 04:34:54,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 233 events. 48/233 cut-off events. For 191/233 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 841 event pairs, 33 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 537. Up to 85 conditions per place. [2023-11-30 04:34:54,725 INFO L140 encePairwiseOnDemand]: 100/108 looper letters, 14 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-30 04:34:54,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 263 flow [2023-11-30 04:34:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:34:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:34:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2023-11-30 04:34:54,727 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2023-11-30 04:34:54,727 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 258 transitions. [2023-11-30 04:34:54,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 258 transitions. [2023-11-30 04:34:54,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:34:54,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 258 transitions. [2023-11-30 04:34:54,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,731 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2023-11-30 04:34:54,731 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 263 flow [2023-11-30 04:34:54,731 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,732 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:54,732 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] [2023-11-30 04:34:54,732 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:34:54,732 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-11-30 04:34:54,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1239830084, now seen corresponding path program 1 times [2023-11-30 04:34:54,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:54,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586684590] [2023-11-30 04:34:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:54,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:34:54,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:34:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:34:54,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:34:54,784 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:34:54,785 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (53 of 54 remaining) [2023-11-30 04:34:54,787 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 54 remaining) [2023-11-30 04:34:54,787 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 54 remaining) [2023-11-30 04:34:54,787 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 54 remaining) [2023-11-30 04:34:54,787 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 54 remaining) [2023-11-30 04:34:54,787 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 54 remaining) [2023-11-30 04:34:54,788 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 54 remaining) [2023-11-30 04:34:54,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 54 remaining) [2023-11-30 04:34:54,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 54 remaining) [2023-11-30 04:34:54,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 54 remaining) [2023-11-30 04:34:54,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 54 remaining) [2023-11-30 04:34:54,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 54 remaining) [2023-11-30 04:34:54,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 54 remaining) [2023-11-30 04:34:54,789 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 54 remaining) [2023-11-30 04:34:54,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 54 remaining) [2023-11-30 04:34:54,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 54 remaining) [2023-11-30 04:34:54,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 54 remaining) [2023-11-30 04:34:54,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 54 remaining) [2023-11-30 04:34:54,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 54 remaining) [2023-11-30 04:34:54,794 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 54 remaining) [2023-11-30 04:34:54,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 54 remaining) [2023-11-30 04:34:54,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 54 remaining) [2023-11-30 04:34:54,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 54 remaining) [2023-11-30 04:34:54,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 54 remaining) [2023-11-30 04:34:54,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 54 remaining) [2023-11-30 04:34:54,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 54 remaining) [2023-11-30 04:34:54,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 54 remaining) [2023-11-30 04:34:54,796 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 54 remaining) [2023-11-30 04:34:54,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 54 remaining) [2023-11-30 04:34:54,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 54 remaining) [2023-11-30 04:34:54,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 54 remaining) [2023-11-30 04:34:54,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 54 remaining) [2023-11-30 04:34:54,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 54 remaining) [2023-11-30 04:34:54,801 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:34:54,801 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-30 04:34:54,803 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:34:54,804 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 04:34:54,870 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:34:54,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 178 transitions, 376 flow [2023-11-30 04:34:54,901 INFO L124 PetriNetUnfolderBase]: 9/179 cut-off events. [2023-11-30 04:34:54,902 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:34:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 179 events. 9/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 550 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 186. Up to 6 conditions per place. [2023-11-30 04:34:54,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 178 transitions, 376 flow [2023-11-30 04:34:54,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 151 transitions, 315 flow [2023-11-30 04:34:54,908 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:34:54,909 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;@5b92d2df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:34:54,909 INFO L363 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2023-11-30 04:34:54,911 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:34:54,911 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-30 04:34:54,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:34:54,911 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:54,911 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:34:54,911 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-11-30 04:34:54,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash 96041553, now seen corresponding path program 1 times [2023-11-30 04:34:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576686972] [2023-11-30 04:34:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:54,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576686972] [2023-11-30 04:34:54,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576686972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:54,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:54,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:34:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253975555] [2023-11-30 04:34:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:54,940 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:34:54,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:54,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:34:54,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:34:54,941 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2023-11-30 04:34:54,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 151 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:54,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:54,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2023-11-30 04:34:54,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:34:57,295 INFO L124 PetriNetUnfolderBase]: 10615/19816 cut-off events. [2023-11-30 04:34:57,295 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2023-11-30 04:34:57,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34519 conditions, 19816 events. 10615/19816 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 185280 event pairs, 8914 based on Foata normal form. 3452/13747 useless extension candidates. Maximal degree in co-relation 34484. Up to 14404 conditions per place. [2023-11-30 04:34:57,460 INFO L140 encePairwiseOnDemand]: 149/178 looper letters, 42 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2023-11-30 04:34:57,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 325 flow [2023-11-30 04:34:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:34:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:34:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-11-30 04:34:57,463 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6217228464419475 [2023-11-30 04:34:57,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-11-30 04:34:57,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-11-30 04:34:57,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:34:57,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-11-30 04:34:57,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:57,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:57,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:57,469 INFO L307 CegarLoopForPetriNet]: 152 programPoint places, -32 predicate places. [2023-11-30 04:34:57,469 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 113 transitions, 325 flow [2023-11-30 04:34:57,469 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:57,469 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:57,470 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:34:57,470 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:34:57,470 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-11-30 04:34:57,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash 96041554, now seen corresponding path program 1 times [2023-11-30 04:34:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:57,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647475715] [2023-11-30 04:34:57,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:57,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:57,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647475715] [2023-11-30 04:34:57,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647475715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:57,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:57,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:34:57,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803232401] [2023-11-30 04:34:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:57,528 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:34:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:34:57,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:34:57,530 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 178 [2023-11-30 04:34:57,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 113 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:57,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:57,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 178 [2023-11-30 04:34:57,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:34:58,895 INFO L124 PetriNetUnfolderBase]: 6701/13292 cut-off events. [2023-11-30 04:34:58,895 INFO L125 PetriNetUnfolderBase]: For 1216/1956 co-relation queries the response was YES. [2023-11-30 04:34:58,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32012 conditions, 13292 events. 6701/13292 cut-off events. For 1216/1956 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 122631 event pairs, 5549 based on Foata normal form. 0/7796 useless extension candidates. Maximal degree in co-relation 31971. Up to 9208 conditions per place. [2023-11-30 04:34:59,016 INFO L140 encePairwiseOnDemand]: 175/178 looper letters, 39 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2023-11-30 04:34:59,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 397 flow [2023-11-30 04:34:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:34:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:34:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-11-30 04:34:59,018 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5730337078651685 [2023-11-30 04:34:59,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-11-30 04:34:59,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-11-30 04:34:59,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:34:59,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-11-30 04:34:59,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,021 INFO L307 CegarLoopForPetriNet]: 152 programPoint places, -32 predicate places. [2023-11-30 04:34:59,021 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 397 flow [2023-11-30 04:34:59,022 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,022 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:59,022 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] [2023-11-30 04:34:59,022 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:34:59,022 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-11-30 04:34:59,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1045331801, now seen corresponding path program 1 times [2023-11-30 04:34:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:59,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138322608] [2023-11-30 04:34:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:59,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:59,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138322608] [2023-11-30 04:34:59,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138322608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:59,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:59,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:34:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866447070] [2023-11-30 04:34:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:59,116 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:34:59,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:59,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:34:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:34:59,118 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 178 [2023-11-30 04:34:59,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 397 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:59,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 178 [2023-11-30 04:34:59,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:34:59,674 INFO L124 PetriNetUnfolderBase]: 2236/5193 cut-off events. [2023-11-30 04:34:59,674 INFO L125 PetriNetUnfolderBase]: For 1300/1932 co-relation queries the response was YES. [2023-11-30 04:34:59,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14714 conditions, 5193 events. 2236/5193 cut-off events. For 1300/1932 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 44149 event pairs, 1843 based on Foata normal form. 0/3744 useless extension candidates. Maximal degree in co-relation 14662. Up to 3120 conditions per place. [2023-11-30 04:34:59,716 INFO L140 encePairwiseOnDemand]: 166/178 looper letters, 31 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-11-30 04:34:59,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 403 flow [2023-11-30 04:34:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:34:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:34:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 383 transitions. [2023-11-30 04:34:59,718 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5379213483146067 [2023-11-30 04:34:59,718 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 383 transitions. [2023-11-30 04:34:59,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 383 transitions. [2023-11-30 04:34:59,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:34:59,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 383 transitions. [2023-11-30 04:34:59,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,720 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,721 INFO L307 CegarLoopForPetriNet]: 152 programPoint places, -39 predicate places. [2023-11-30 04:34:59,721 INFO L500 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 403 flow [2023-11-30 04:34:59,721 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,721 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:34:59,721 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] [2023-11-30 04:34:59,721 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:34:59,721 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-11-30 04:34:59,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:34:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1045331802, now seen corresponding path program 1 times [2023-11-30 04:34:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:34:59,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125039616] [2023-11-30 04:34:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:34:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:34:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:34:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:34:59,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:34:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125039616] [2023-11-30 04:34:59,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125039616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:34:59,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:34:59,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:34:59,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716545479] [2023-11-30 04:34:59,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:34:59,838 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:34:59,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:34:59,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:34:59,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:34:59,839 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 178 [2023-11-30 04:34:59,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:34:59,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:34:59,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 178 [2023-11-30 04:34:59,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:35:00,002 INFO L124 PetriNetUnfolderBase]: 387/1334 cut-off events. [2023-11-30 04:35:00,003 INFO L125 PetriNetUnfolderBase]: For 896/1172 co-relation queries the response was YES. [2023-11-30 04:35:00,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3666 conditions, 1334 events. 387/1334 cut-off events. For 896/1172 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 9075 event pairs, 313 based on Foata normal form. 0/1280 useless extension candidates. Maximal degree in co-relation 3603. Up to 565 conditions per place. [2023-11-30 04:35:00,014 INFO L140 encePairwiseOnDemand]: 165/178 looper letters, 20 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-30 04:35:00,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 91 transitions, 369 flow [2023-11-30 04:35:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:35:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:35:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2023-11-30 04:35:00,016 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5146067415730337 [2023-11-30 04:35:00,016 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2023-11-30 04:35:00,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2023-11-30 04:35:00,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:35:00,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2023-11-30 04:35:00,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:00,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:00,020 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:00,020 INFO L307 CegarLoopForPetriNet]: 152 programPoint places, -45 predicate places. [2023-11-30 04:35:00,020 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 369 flow [2023-11-30 04:35:00,021 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:00,021 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:35:00,021 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-11-30 04:35:00,021 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 04:35:00,021 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2023-11-30 04:35:00,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:35:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2061424294, now seen corresponding path program 1 times [2023-11-30 04:35:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:35:00,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306189917] [2023-11-30 04:35:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:35:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:35:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:35:00,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:35:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:35:00,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:35:00,052 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:35:00,053 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2023-11-30 04:35:00,053 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2023-11-30 04:35:00,053 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2023-11-30 04:35:00,053 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2023-11-30 04:35:00,053 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2023-11-30 04:35:00,054 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2023-11-30 04:35:00,055 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2023-11-30 04:35:00,056 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 78 remaining) [2023-11-30 04:35:00,057 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2023-11-30 04:35:00,058 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2023-11-30 04:35:00,059 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2023-11-30 04:35:00,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2023-11-30 04:35:00,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2023-11-30 04:35:00,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2023-11-30 04:35:00,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2023-11-30 04:35:00,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2023-11-30 04:35:00,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2023-11-30 04:35:00,060 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2023-11-30 04:35:00,060 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 04:35:00,061 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-30 04:35:00,061 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:35:00,061 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 04:35:00,130 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:35:00,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 248 transitions, 532 flow [2023-11-30 04:35:00,154 INFO L124 PetriNetUnfolderBase]: 11/238 cut-off events. [2023-11-30 04:35:00,154 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 04:35:00,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 238 events. 11/238 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 842 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-11-30 04:35:00,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 248 transitions, 532 flow [2023-11-30 04:35:00,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 195 transitions, 411 flow [2023-11-30 04:35:00,160 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:35:00,161 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;@5b92d2df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:35:00,161 INFO L363 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-11-30 04:35:00,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:35:00,162 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-30 04:35:00,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:35:00,162 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:35:00,162 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:35:00,162 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-30 04:35:00,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:35:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash 729842505, now seen corresponding path program 1 times [2023-11-30 04:35:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:35:00,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428337409] [2023-11-30 04:35:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:35:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:35:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:35:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:35:00,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:35:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428337409] [2023-11-30 04:35:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428337409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:35:00,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:35:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:35:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212629702] [2023-11-30 04:35:00,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:35:00,185 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:35:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:35:00,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:35:00,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:35:00,186 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 248 [2023-11-30 04:35:00,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 195 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:00,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:35:00,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 248 [2023-11-30 04:35:00,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:35:30,831 INFO L124 PetriNetUnfolderBase]: 183845/305816 cut-off events. [2023-11-30 04:35:30,832 INFO L125 PetriNetUnfolderBase]: For 13453/13453 co-relation queries the response was YES. [2023-11-30 04:35:31,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544276 conditions, 305816 events. 183845/305816 cut-off events. For 13453/13453 co-relation queries the response was YES. Maximal size of possible extension queue 13167. Compared 3416329 event pairs, 162028 based on Foata normal form. 44901/196417 useless extension candidates. Maximal degree in co-relation 544240. Up to 233428 conditions per place. [2023-11-30 04:35:34,260 INFO L140 encePairwiseOnDemand]: 211/248 looper letters, 55 selfloop transitions, 1 changer transitions 0/149 dead transitions. [2023-11-30 04:35:34,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 149 transitions, 431 flow [2023-11-30 04:35:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:35:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:35:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-30 04:35:34,262 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6075268817204301 [2023-11-30 04:35:34,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-30 04:35:34,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-30 04:35:34,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:35:34,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-30 04:35:34,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:34,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:34,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:34,265 INFO L307 CegarLoopForPetriNet]: 197 programPoint places, -40 predicate places. [2023-11-30 04:35:34,265 INFO L500 AbstractCegarLoop]: Abstraction has has 157 places, 149 transitions, 431 flow [2023-11-30 04:35:34,266 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:34,266 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:35:34,266 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:35:34,266 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-30 04:35:34,266 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-30 04:35:34,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:35:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash 729842506, now seen corresponding path program 1 times [2023-11-30 04:35:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:35:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337313367] [2023-11-30 04:35:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:35:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:35:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:35:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:35:34,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:35:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337313367] [2023-11-30 04:35:34,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337313367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:35:34,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:35:34,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:35:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786384636] [2023-11-30 04:35:34,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:35:34,309 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:35:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:35:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:35:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:35:34,310 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 248 [2023-11-30 04:35:34,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 149 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:34,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:35:34,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 248 [2023-11-30 04:35:34,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:35:55,070 INFO L124 PetriNetUnfolderBase]: 117570/202085 cut-off events. [2023-11-30 04:35:55,070 INFO L125 PetriNetUnfolderBase]: For 22519/41701 co-relation queries the response was YES. [2023-11-30 04:35:56,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508106 conditions, 202085 events. 117570/202085 cut-off events. For 22519/41701 co-relation queries the response was YES. Maximal size of possible extension queue 8697. Compared 2236303 event pairs, 102893 based on Foata normal form. 0/110079 useless extension candidates. Maximal degree in co-relation 508064. Up to 150492 conditions per place. [2023-11-30 04:35:57,653 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 52 selfloop transitions, 1 changer transitions 0/147 dead transitions. [2023-11-30 04:35:57,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 147 transitions, 529 flow [2023-11-30 04:35:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:35:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:35:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-11-30 04:35:57,654 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5618279569892473 [2023-11-30 04:35:57,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-11-30 04:35:57,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-11-30 04:35:57,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:35:57,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-11-30 04:35:57,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:57,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:57,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:57,658 INFO L307 CegarLoopForPetriNet]: 197 programPoint places, -40 predicate places. [2023-11-30 04:35:57,658 INFO L500 AbstractCegarLoop]: Abstraction has has 157 places, 147 transitions, 529 flow [2023-11-30 04:35:57,658 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:57,658 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:35:57,658 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] [2023-11-30 04:35:57,658 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-30 04:35:57,658 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-30 04:35:57,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:35:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1483974056, now seen corresponding path program 1 times [2023-11-30 04:35:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:35:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719984936] [2023-11-30 04:35:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:35:57,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:35:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:35:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:35:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:35:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719984936] [2023-11-30 04:35:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719984936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:35:57,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:35:57,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:35:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419581733] [2023-11-30 04:35:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:35:57,734 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:35:57,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:35:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:35:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:35:57,736 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 248 [2023-11-30 04:35:57,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 147 transitions, 529 flow. Second operand has 6 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:35:57,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:35:57,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 248 [2023-11-30 04:35:57,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:36:03,307 INFO L124 PetriNetUnfolderBase]: 27309/53896 cut-off events. [2023-11-30 04:36:03,308 INFO L125 PetriNetUnfolderBase]: For 13853/23537 co-relation queries the response was YES. [2023-11-30 04:36:03,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161752 conditions, 53896 events. 27309/53896 cut-off events. For 13853/23537 co-relation queries the response was YES. Maximal size of possible extension queue 2158. Compared 575897 event pairs, 23875 based on Foata normal form. 0/37197 useless extension candidates. Maximal degree in co-relation 161699. Up to 35358 conditions per place. [2023-11-30 04:36:03,780 INFO L140 encePairwiseOnDemand]: 232/248 looper letters, 40 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-11-30 04:36:03,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 133 transitions, 529 flow [2023-11-30 04:36:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:36:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:36:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 528 transitions. [2023-11-30 04:36:03,783 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-11-30 04:36:03,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 528 transitions. [2023-11-30 04:36:03,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 528 transitions. [2023-11-30 04:36:03,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:36:03,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 528 transitions. [2023-11-30 04:36:03,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:03,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:03,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:03,787 INFO L307 CegarLoopForPetriNet]: 197 programPoint places, -51 predicate places. [2023-11-30 04:36:03,787 INFO L500 AbstractCegarLoop]: Abstraction has has 146 places, 133 transitions, 529 flow [2023-11-30 04:36:03,788 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:03,788 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:36:03,789 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:36:03,789 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-30 04:36:03,789 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-30 04:36:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:36:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1483974055, now seen corresponding path program 1 times [2023-11-30 04:36:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:36:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843964878] [2023-11-30 04:36:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:36:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:36:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:36:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:36:03,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:36:03,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843964878] [2023-11-30 04:36:03,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843964878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:36:03,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:36:03,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:36:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845044195] [2023-11-30 04:36:03,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:36:03,891 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:36:03,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:36:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:36:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:36:03,892 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 248 [2023-11-30 04:36:03,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 133 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:03,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:36:03,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 248 [2023-11-30 04:36:03,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:36:04,880 INFO L124 PetriNetUnfolderBase]: 2664/7547 cut-off events. [2023-11-30 04:36:04,880 INFO L125 PetriNetUnfolderBase]: For 4862/6794 co-relation queries the response was YES. [2023-11-30 04:36:04,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22178 conditions, 7547 events. 2664/7547 cut-off events. For 4862/6794 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 70964 event pairs, 2313 based on Foata normal form. 0/7277 useless extension candidates. Maximal degree in co-relation 22116. Up to 3565 conditions per place. [2023-11-30 04:36:04,930 INFO L140 encePairwiseOnDemand]: 232/248 looper letters, 24 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-30 04:36:04,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 119 transitions, 469 flow [2023-11-30 04:36:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:36:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:36:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 540 transitions. [2023-11-30 04:36:04,932 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5443548387096774 [2023-11-30 04:36:04,932 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 540 transitions. [2023-11-30 04:36:04,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 540 transitions. [2023-11-30 04:36:04,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:36:04,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 540 transitions. [2023-11-30 04:36:04,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:04,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:04,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:04,936 INFO L307 CegarLoopForPetriNet]: 197 programPoint places, -62 predicate places. [2023-11-30 04:36:04,936 INFO L500 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 469 flow [2023-11-30 04:36:04,936 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:04,937 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:36:04,937 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:36:04,937 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-30 04:36:04,937 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-30 04:36:04,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:36:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash -608186229, now seen corresponding path program 1 times [2023-11-30 04:36:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:36:04,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368735661] [2023-11-30 04:36:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:36:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:36:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:36:04,953 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:36:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:36:04,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:36:04,972 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:36:04,972 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (101 of 102 remaining) [2023-11-30 04:36:04,972 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 102 remaining) [2023-11-30 04:36:04,972 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 102 remaining) [2023-11-30 04:36:04,972 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 102 remaining) [2023-11-30 04:36:04,972 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 102 remaining) [2023-11-30 04:36:04,972 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 102 remaining) [2023-11-30 04:36:04,973 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 102 remaining) [2023-11-30 04:36:04,974 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 102 remaining) [2023-11-30 04:36:04,975 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 102 remaining) [2023-11-30 04:36:04,975 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 102 remaining) [2023-11-30 04:36:04,975 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (72 of 102 remaining) [2023-11-30 04:36:04,977 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 102 remaining) [2023-11-30 04:36:04,977 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 102 remaining) [2023-11-30 04:36:04,977 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 102 remaining) [2023-11-30 04:36:04,977 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 102 remaining) [2023-11-30 04:36:04,977 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 102 remaining) [2023-11-30 04:36:04,977 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 102 remaining) [2023-11-30 04:36:04,977 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 102 remaining) [2023-11-30 04:36:04,978 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 102 remaining) [2023-11-30 04:36:04,979 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 102 remaining) [2023-11-30 04:36:04,980 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 102 remaining) [2023-11-30 04:36:04,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 102 remaining) [2023-11-30 04:36:04,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 102 remaining) [2023-11-30 04:36:04,983 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 102 remaining) [2023-11-30 04:36:04,984 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-30 04:36:04,984 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-30 04:36:04,985 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:36:04,985 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-30 04:36:05,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:36:05,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 318 transitions, 692 flow [2023-11-30 04:36:05,094 INFO L124 PetriNetUnfolderBase]: 13/297 cut-off events. [2023-11-30 04:36:05,094 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-30 04:36:05,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 297 events. 13/297 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1115 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 313. Up to 10 conditions per place. [2023-11-30 04:36:05,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 318 transitions, 692 flow [2023-11-30 04:36:05,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 239 transitions, 509 flow [2023-11-30 04:36:05,101 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:36:05,102 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;@5b92d2df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:36:05,102 INFO L363 AbstractCegarLoop]: Starting to check reachability of 126 error locations. [2023-11-30 04:36:05,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:36:05,103 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-30 04:36:05,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:36:05,103 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:36:05,103 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:36:05,103 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 123 more)] === [2023-11-30 04:36:05,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:36:05,103 INFO L85 PathProgramCache]: Analyzing trace with hash 468797063, now seen corresponding path program 1 times [2023-11-30 04:36:05,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:36:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736512585] [2023-11-30 04:36:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:36:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:36:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:36:05,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:36:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:36:05,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736512585] [2023-11-30 04:36:05,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736512585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:36:05,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:36:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:36:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825614653] [2023-11-30 04:36:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:36:05,143 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:36:05,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:36:05,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:36:05,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:36:05,145 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 318 [2023-11-30 04:36:05,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 239 transitions, 509 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:36:05,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:36:05,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 318 [2023-11-30 04:36:05,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand