/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:12:11,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:12:11,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:12:11,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:12:11,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:12:11,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:12:11,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:12:11,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:12:11,903 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:12:11,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:12:11,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:12:11,907 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:12:11,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:12:11,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:12:11,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:12:11,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:12:11,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:12:11,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:12:11,909 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:12:11,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:12:11,909 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:12:11,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:12:11,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:12:11,910 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:12:11,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:12:11,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:12:11,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:12:11,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:12:11,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:12:11,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:12:11,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:12:11,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:12:11,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:12:11,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:12:12,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:12:12,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:12:12,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:12:12,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:12:12,119 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:12:12,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i [2023-12-05 21:12:13,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:12:13,315 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:12:13,315 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i [2023-12-05 21:12:13,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9614be93/ae55d3543f7b4c6f9834b1f949bf8608/FLAG4cf90ca38 [2023-12-05 21:12:13,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9614be93/ae55d3543f7b4c6f9834b1f949bf8608 [2023-12-05 21:12:13,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:12:13,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:12:13,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:12:13,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:12:13,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:12:13,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f960516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13, skipping insertion in model container [2023-12-05 21:12:13,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:12:13,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:12:13,729 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:12:13,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:12:13,813 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:12:13,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13 WrapperNode [2023-12-05 21:12:13,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:12:13,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:12:13,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:12:13,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:12:13,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,862 INFO L138 Inliner]: procedures = 263, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2023-12-05 21:12:13,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:12:13,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:12:13,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:12:13,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:12:13,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:12:13,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:12:13,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:12:13,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:12:13,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (1/1) ... [2023-12-05 21:12:13,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:12:13,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:13,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:12:13,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:12:13,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:12:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:12:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:12:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:12:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:12:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:12:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:12:13,983 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-05 21:12:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-05 21:12:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:12:13,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:12:13,985 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:12:14,108 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:12:14,110 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:12:14,242 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:12:14,261 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:12:14,261 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-05 21:12:14,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:12:14 BoogieIcfgContainer [2023-12-05 21:12:14,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:12:14,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:12:14,264 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:12:14,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:12:14,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:12:13" (1/3) ... [2023-12-05 21:12:14,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160aff58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:12:14, skipping insertion in model container [2023-12-05 21:12:14,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:13" (2/3) ... [2023-12-05 21:12:14,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160aff58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:12:14, skipping insertion in model container [2023-12-05 21:12:14,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:12:14" (3/3) ... [2023-12-05 21:12:14,268 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2023-12-05 21:12:14,281 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:12:14,281 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-12-05 21:12:14,281 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:12:14,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:12:14,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 87 transitions, 178 flow [2023-12-05 21:12:14,403 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-12-05 21:12:14,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:14,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 6/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-12-05 21:12:14,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 87 transitions, 178 flow [2023-12-05 21:12:14,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 86 transitions, 175 flow [2023-12-05 21:12:14,418 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:12:14,422 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;@1dfce1c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:12:14,422 INFO L363 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-12-05 21:12:14,435 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:12:14,435 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-12-05 21:12:14,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:14,435 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:14,436 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:14,436 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:14,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash 852677749, now seen corresponding path program 1 times [2023-12-05 21:12:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:14,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577276259] [2023-12-05 21:12:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:14,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:14,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577276259] [2023-12-05 21:12:14,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577276259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:14,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:12:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086800731] [2023-12-05 21:12:14,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:14,598 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:12:14,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:12:14,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:12:14,634 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 87 [2023-12-05 21:12:14,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:14,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:14,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 87 [2023-12-05 21:12:14,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:14,686 INFO L124 PetriNetUnfolderBase]: 14/177 cut-off events. [2023-12-05 21:12:14,686 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-05 21:12:14,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 177 events. 14/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 528 event pairs, 6 based on Foata normal form. 10/158 useless extension candidates. Maximal degree in co-relation 172. Up to 32 conditions per place. [2023-12-05 21:12:14,689 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 16 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-12-05 21:12:14,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 213 flow [2023-12-05 21:12:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:12:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:12:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-12-05 21:12:14,704 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.89272030651341 [2023-12-05 21:12:14,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-12-05 21:12:14,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-12-05 21:12:14,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:14,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-12-05 21:12:14,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:14,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:14,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:14,715 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-12-05 21:12:14,715 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 213 flow [2023-12-05 21:12:14,715 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:14,715 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:14,715 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:14,716 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:12:14,716 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:14,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1124721980, now seen corresponding path program 1 times [2023-12-05 21:12:14,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:14,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734664933] [2023-12-05 21:12:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:14,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:14,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:14,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734664933] [2023-12-05 21:12:14,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734664933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:14,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942988006] [2023-12-05 21:12:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:14,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:14,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:14,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-05 21:12:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:14,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-05 21:12:14,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:14,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:14,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942988006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:14,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:14,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-05 21:12:14,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076246546] [2023-12-05 21:12:14,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:14,964 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-05 21:12:14,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:14,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-05 21:12:14,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-05 21:12:14,967 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2023-12-05 21:12:14,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 213 flow. Second operand has 10 states, 10 states have (on average 71.1) internal successors, (711), 10 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:14,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:14,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2023-12-05 21:12:14,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:15,097 INFO L124 PetriNetUnfolderBase]: 14/184 cut-off events. [2023-12-05 21:12:15,097 INFO L125 PetriNetUnfolderBase]: For 18/20 co-relation queries the response was YES. [2023-12-05 21:12:15,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 184 events. 14/184 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 524 event pairs, 6 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 194. Up to 37 conditions per place. [2023-12-05 21:12:15,099 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 17 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2023-12-05 21:12:15,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 289 flow [2023-12-05 21:12:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-05 21:12:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-05 21:12:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2023-12-05 21:12:15,111 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8288633461047255 [2023-12-05 21:12:15,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2023-12-05 21:12:15,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2023-12-05 21:12:15,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:15,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2023-12-05 21:12:15,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,121 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 10 predicate places. [2023-12-05 21:12:15,122 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 289 flow [2023-12-05 21:12:15,122 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.1) internal successors, (711), 10 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,122 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:15,123 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:15,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-05 21:12:15,329 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:15,330 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:15,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash -558154532, now seen corresponding path program 2 times [2023-12-05 21:12:15,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:15,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066811247] [2023-12-05 21:12:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-05 21:12:15,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066811247] [2023-12-05 21:12:15,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066811247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:15,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:15,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:12:15,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691673364] [2023-12-05 21:12:15,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:15,428 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:12:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:12:15,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:12:15,429 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 87 [2023-12-05 21:12:15,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:15,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 87 [2023-12-05 21:12:15,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:15,515 INFO L124 PetriNetUnfolderBase]: 72/355 cut-off events. [2023-12-05 21:12:15,515 INFO L125 PetriNetUnfolderBase]: For 132/138 co-relation queries the response was YES. [2023-12-05 21:12:15,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 355 events. 72/355 cut-off events. For 132/138 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1732 event pairs, 48 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 560. Up to 94 conditions per place. [2023-12-05 21:12:15,519 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 26 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-12-05 21:12:15,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 363 flow [2023-12-05 21:12:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:12:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:12:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2023-12-05 21:12:15,520 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8122605363984674 [2023-12-05 21:12:15,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2023-12-05 21:12:15,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2023-12-05 21:12:15,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:15,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2023-12-05 21:12:15,521 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) [2023-12-05 21:12:15,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,523 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2023-12-05 21:12:15,524 INFO L500 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 363 flow [2023-12-05 21:12:15,524 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,524 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:15,525 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:15,525 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:12:15,525 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:15,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:15,526 INFO L85 PathProgramCache]: Analyzing trace with hash -558154531, now seen corresponding path program 1 times [2023-12-05 21:12:15,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:15,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039605435] [2023-12-05 21:12:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:15,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-05 21:12:15,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:15,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039605435] [2023-12-05 21:12:15,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039605435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:15,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:15,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:12:15,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814869866] [2023-12-05 21:12:15,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:15,694 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:12:15,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:15,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:12:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:12:15,696 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 87 [2023-12-05 21:12:15,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 363 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:15,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 87 [2023-12-05 21:12:15,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:15,770 INFO L124 PetriNetUnfolderBase]: 102/440 cut-off events. [2023-12-05 21:12:15,771 INFO L125 PetriNetUnfolderBase]: For 364/384 co-relation queries the response was YES. [2023-12-05 21:12:15,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 440 events. 102/440 cut-off events. For 364/384 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2385 event pairs, 60 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 868. Up to 139 conditions per place. [2023-12-05 21:12:15,774 INFO L140 encePairwiseOnDemand]: 84/87 looper letters, 28 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-12-05 21:12:15,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 447 flow [2023-12-05 21:12:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:12:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:12:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2023-12-05 21:12:15,776 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8160919540229885 [2023-12-05 21:12:15,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2023-12-05 21:12:15,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2023-12-05 21:12:15,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:15,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2023-12-05 21:12:15,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,779 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2023-12-05 21:12:15,779 INFO L500 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 447 flow [2023-12-05 21:12:15,780 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:15,780 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:15,780 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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, 1, 1] [2023-12-05 21:12:15,780 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:12:15,780 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:15,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1206078554, now seen corresponding path program 1 times [2023-12-05 21:12:15,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:15,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115602560] [2023-12-05 21:12:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:15,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:15,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115602560] [2023-12-05 21:12:15,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115602560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:15,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968761989] [2023-12-05 21:12:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:15,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:15,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:15,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:15,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-05 21:12:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:15,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-05 21:12:15,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:16,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:16,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968761989] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:16,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:16,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-05 21:12:16,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791731472] [2023-12-05 21:12:16,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:16,134 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-05 21:12:16,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:16,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-05 21:12:16,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-05 21:12:16,138 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2023-12-05 21:12:16,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 447 flow. Second operand has 18 states, 18 states have (on average 71.38888888888889) internal successors, (1285), 18 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:16,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:16,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2023-12-05 21:12:16,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:16,327 INFO L124 PetriNetUnfolderBase]: 102/460 cut-off events. [2023-12-05 21:12:16,327 INFO L125 PetriNetUnfolderBase]: For 588/611 co-relation queries the response was YES. [2023-12-05 21:12:16,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 460 events. 102/460 cut-off events. For 588/611 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2382 event pairs, 60 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 930. Up to 139 conditions per place. [2023-12-05 21:12:16,330 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 29 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2023-12-05 21:12:16,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 124 transitions, 659 flow [2023-12-05 21:12:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-05 21:12:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-05 21:12:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1499 transitions. [2023-12-05 21:12:16,335 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8204707170224411 [2023-12-05 21:12:16,335 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1499 transitions. [2023-12-05 21:12:16,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1499 transitions. [2023-12-05 21:12:16,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:16,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1499 transitions. [2023-12-05 21:12:16,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 71.38095238095238) internal successors, (1499), 21 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:16,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:16,340 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 87.0) internal successors, (1914), 22 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:16,341 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2023-12-05 21:12:16,341 INFO L500 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 659 flow [2023-12-05 21:12:16,341 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.38888888888889) internal successors, (1285), 18 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:16,342 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:16,342 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:16,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-05 21:12:16,542 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:16,542 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:16,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:16,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1024988261, now seen corresponding path program 1 times [2023-12-05 21:12:16,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857019963] [2023-12-05 21:12:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857019963] [2023-12-05 21:12:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857019963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030009780] [2023-12-05 21:12:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:16,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:16,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:16,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-05 21:12:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:16,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-05 21:12:16,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:17,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030009780] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:17,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-12-05 21:12:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470810912] [2023-12-05 21:12:17,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:17,203 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-05 21:12:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-05 21:12:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-12-05 21:12:17,206 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2023-12-05 21:12:17,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 659 flow. Second operand has 23 states, 23 states have (on average 71.52173913043478) internal successors, (1645), 23 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:17,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:17,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2023-12-05 21:12:17,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:17,495 INFO L124 PetriNetUnfolderBase]: 99/455 cut-off events. [2023-12-05 21:12:17,495 INFO L125 PetriNetUnfolderBase]: For 797/799 co-relation queries the response was YES. [2023-12-05 21:12:17,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 455 events. 99/455 cut-off events. For 797/799 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2228 event pairs, 58 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 954. Up to 138 conditions per place. [2023-12-05 21:12:17,497 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 35 selfloop transitions, 30 changer transitions 0/139 dead transitions. [2023-12-05 21:12:17,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 139 transitions, 903 flow [2023-12-05 21:12:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-05 21:12:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-05 21:12:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2134 transitions. [2023-12-05 21:12:17,501 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8176245210727969 [2023-12-05 21:12:17,501 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2134 transitions. [2023-12-05 21:12:17,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2134 transitions. [2023-12-05 21:12:17,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:17,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2134 transitions. [2023-12-05 21:12:17,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 71.13333333333334) internal successors, (2134), 30 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:17,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:17,510 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:17,511 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 61 predicate places. [2023-12-05 21:12:17,512 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 903 flow [2023-12-05 21:12:17,512 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 71.52173913043478) internal successors, (1645), 23 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:17,512 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:17,512 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:17,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-05 21:12:17,717 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:17,717 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:17,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash 917495948, now seen corresponding path program 2 times [2023-12-05 21:12:17,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:17,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693175981] [2023-12-05 21:12:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:17,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:17,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693175981] [2023-12-05 21:12:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693175981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:17,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:17,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-05 21:12:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121337467] [2023-12-05 21:12:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:17,975 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-05 21:12:17,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:17,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-05 21:12:17,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-05 21:12:17,977 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2023-12-05 21:12:17,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 903 flow. Second operand has 9 states, 9 states have (on average 50.666666666666664) internal successors, (456), 9 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:17,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:17,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2023-12-05 21:12:17,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:18,163 INFO L124 PetriNetUnfolderBase]: 148/523 cut-off events. [2023-12-05 21:12:18,164 INFO L125 PetriNetUnfolderBase]: For 1478/1490 co-relation queries the response was YES. [2023-12-05 21:12:18,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 523 events. 148/523 cut-off events. For 1478/1490 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2844 event pairs, 21 based on Foata normal form. 24/537 useless extension candidates. Maximal degree in co-relation 1479. Up to 152 conditions per place. [2023-12-05 21:12:18,168 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 73 selfloop transitions, 20 changer transitions 0/178 dead transitions. [2023-12-05 21:12:18,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 178 transitions, 1351 flow [2023-12-05 21:12:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-05 21:12:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-05 21:12:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 574 transitions. [2023-12-05 21:12:18,170 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6597701149425287 [2023-12-05 21:12:18,171 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 574 transitions. [2023-12-05 21:12:18,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 574 transitions. [2023-12-05 21:12:18,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:18,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 574 transitions. [2023-12-05 21:12:18,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.4) internal successors, (574), 10 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,173 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,174 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 70 predicate places. [2023-12-05 21:12:18,174 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 178 transitions, 1351 flow [2023-12-05 21:12:18,175 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.666666666666664) internal successors, (456), 9 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,175 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:18,175 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:18,175 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:12:18,175 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:18,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 917495949, now seen corresponding path program 2 times [2023-12-05 21:12:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:18,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74314262] [2023-12-05 21:12:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:18,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:18,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74314262] [2023-12-05 21:12:18,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74314262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:18,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:18,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-05 21:12:18,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044798866] [2023-12-05 21:12:18,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:18,449 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-05 21:12:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-05 21:12:18,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-05 21:12:18,450 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2023-12-05 21:12:18,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 178 transitions, 1351 flow. Second operand has 10 states, 10 states have (on average 45.7) internal successors, (457), 10 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:18,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2023-12-05 21:12:18,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:18,758 INFO L124 PetriNetUnfolderBase]: 365/1074 cut-off events. [2023-12-05 21:12:18,758 INFO L125 PetriNetUnfolderBase]: For 4285/4326 co-relation queries the response was YES. [2023-12-05 21:12:18,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4229 conditions, 1074 events. 365/1074 cut-off events. For 4285/4326 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6784 event pairs, 68 based on Foata normal form. 39/1090 useless extension candidates. Maximal degree in co-relation 3888. Up to 326 conditions per place. [2023-12-05 21:12:18,765 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 148 selfloop transitions, 25 changer transitions 1/258 dead transitions. [2023-12-05 21:12:18,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 258 transitions, 2335 flow [2023-12-05 21:12:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-05 21:12:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-05 21:12:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 649 transitions. [2023-12-05 21:12:18,767 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6216475095785441 [2023-12-05 21:12:18,767 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 649 transitions. [2023-12-05 21:12:18,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 649 transitions. [2023-12-05 21:12:18,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:18,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 649 transitions. [2023-12-05 21:12:18,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 54.083333333333336) internal successors, (649), 12 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,770 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,770 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 81 predicate places. [2023-12-05 21:12:18,770 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 258 transitions, 2335 flow [2023-12-05 21:12:18,771 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.7) internal successors, (457), 10 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,771 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:18,771 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:18,771 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:12:18,771 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:18,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:18,771 INFO L85 PathProgramCache]: Analyzing trace with hash 67385460, now seen corresponding path program 1 times [2023-12-05 21:12:18,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:18,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179695092] [2023-12-05 21:12:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:18,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:18,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:18,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179695092] [2023-12-05 21:12:18,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179695092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:18,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:18,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-05 21:12:18,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171602376] [2023-12-05 21:12:18,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:18,973 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-05 21:12:18,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-05 21:12:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-05 21:12:18,974 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 87 [2023-12-05 21:12:18,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 258 transitions, 2335 flow. Second operand has 10 states, 10 states have (on average 45.7) internal successors, (457), 10 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:18,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:18,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 87 [2023-12-05 21:12:18,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:19,361 INFO L124 PetriNetUnfolderBase]: 764/2195 cut-off events. [2023-12-05 21:12:19,362 INFO L125 PetriNetUnfolderBase]: For 12515/12661 co-relation queries the response was YES. [2023-12-05 21:12:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9080 conditions, 2195 events. 764/2195 cut-off events. For 12515/12661 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14979 event pairs, 237 based on Foata normal form. 69/2161 useless extension candidates. Maximal degree in co-relation 8719. Up to 680 conditions per place. [2023-12-05 21:12:19,376 INFO L140 encePairwiseOnDemand]: 73/87 looper letters, 201 selfloop transitions, 22 changer transitions 1/337 dead transitions. [2023-12-05 21:12:19,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 337 transitions, 3623 flow [2023-12-05 21:12:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-05 21:12:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-05 21:12:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 479 transitions. [2023-12-05 21:12:19,378 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.611749680715198 [2023-12-05 21:12:19,378 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 479 transitions. [2023-12-05 21:12:19,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 479 transitions. [2023-12-05 21:12:19,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:19,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 479 transitions. [2023-12-05 21:12:19,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 53.22222222222222) internal successors, (479), 9 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,380 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,381 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 89 predicate places. [2023-12-05 21:12:19,381 INFO L500 AbstractCegarLoop]: Abstraction has has 173 places, 337 transitions, 3623 flow [2023-12-05 21:12:19,381 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.7) internal successors, (457), 10 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,381 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:19,381 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:19,381 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-05 21:12:19,381 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:19,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash 67385459, now seen corresponding path program 1 times [2023-12-05 21:12:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587755376] [2023-12-05 21:12:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:19,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587755376] [2023-12-05 21:12:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587755376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:19,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:19,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-05 21:12:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472402379] [2023-12-05 21:12:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:19,539 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-05 21:12:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-05 21:12:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-05 21:12:19,540 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2023-12-05 21:12:19,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 337 transitions, 3623 flow. Second operand has 9 states, 9 states have (on average 50.666666666666664) internal successors, (456), 9 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:19,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2023-12-05 21:12:19,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:19,891 INFO L124 PetriNetUnfolderBase]: 689/1995 cut-off events. [2023-12-05 21:12:19,891 INFO L125 PetriNetUnfolderBase]: For 14741/14865 co-relation queries the response was YES. [2023-12-05 21:12:19,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9289 conditions, 1995 events. 689/1995 cut-off events. For 14741/14865 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12933 event pairs, 175 based on Foata normal form. 115/2026 useless extension candidates. Maximal degree in co-relation 8908. Up to 635 conditions per place. [2023-12-05 21:12:19,906 INFO L140 encePairwiseOnDemand]: 76/87 looper letters, 188 selfloop transitions, 29 changer transitions 1/345 dead transitions. [2023-12-05 21:12:19,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 345 transitions, 4249 flow [2023-12-05 21:12:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-05 21:12:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-05 21:12:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 442 transitions. [2023-12-05 21:12:19,908 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6350574712643678 [2023-12-05 21:12:19,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 442 transitions. [2023-12-05 21:12:19,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 442 transitions. [2023-12-05 21:12:19,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:19,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 442 transitions. [2023-12-05 21:12:19,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 55.25) internal successors, (442), 8 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,911 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,911 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 94 predicate places. [2023-12-05 21:12:19,912 INFO L500 AbstractCegarLoop]: Abstraction has has 178 places, 345 transitions, 4249 flow [2023-12-05 21:12:19,912 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.666666666666664) internal successors, (456), 9 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:19,912 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:19,912 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:19,913 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-05 21:12:19,913 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:19,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:19,913 INFO L85 PathProgramCache]: Analyzing trace with hash 695445661, now seen corresponding path program 1 times [2023-12-05 21:12:19,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:19,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390686520] [2023-12-05 21:12:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:19,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:20,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390686520] [2023-12-05 21:12:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390686520] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857890291] [2023-12-05 21:12:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:20,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:20,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:20,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:20,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-05 21:12:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:20,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-05 21:12:20,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:20,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-05 21:12:20,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-05 21:12:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:21,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:21,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-05 21:12:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:21,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857890291] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:21,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:21,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 31 [2023-12-05 21:12:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391181327] [2023-12-05 21:12:21,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:21,829 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-05 21:12:21,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-05 21:12:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-12-05 21:12:21,831 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 87 [2023-12-05 21:12:21,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 345 transitions, 4249 flow. Second operand has 32 states, 32 states have (on average 45.75) internal successors, (1464), 32 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:21,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:21,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 87 [2023-12-05 21:12:21,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:23,670 INFO L124 PetriNetUnfolderBase]: 1264/3589 cut-off events. [2023-12-05 21:12:23,671 INFO L125 PetriNetUnfolderBase]: For 33747/34254 co-relation queries the response was YES. [2023-12-05 21:12:23,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19253 conditions, 3589 events. 1264/3589 cut-off events. For 33747/34254 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 24607 event pairs, 238 based on Foata normal form. 231/3687 useless extension candidates. Maximal degree in co-relation 18853. Up to 1552 conditions per place. [2023-12-05 21:12:23,702 INFO L140 encePairwiseOnDemand]: 70/87 looper letters, 463 selfloop transitions, 100 changer transitions 1/648 dead transitions. [2023-12-05 21:12:23,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 648 transitions, 9827 flow [2023-12-05 21:12:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-05 21:12:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-12-05 21:12:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1761 transitions. [2023-12-05 21:12:23,705 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5953346855983773 [2023-12-05 21:12:23,706 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1761 transitions. [2023-12-05 21:12:23,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1761 transitions. [2023-12-05 21:12:23,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:23,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1761 transitions. [2023-12-05 21:12:23,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 51.794117647058826) internal successors, (1761), 34 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:23,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 87.0) internal successors, (3045), 35 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:23,711 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 87.0) internal successors, (3045), 35 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:23,712 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 126 predicate places. [2023-12-05 21:12:23,712 INFO L500 AbstractCegarLoop]: Abstraction has has 210 places, 648 transitions, 9827 flow [2023-12-05 21:12:23,712 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 45.75) internal successors, (1464), 32 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:23,713 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:23,713 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:23,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-05 21:12:23,918 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:23,918 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:23,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash 623695329, now seen corresponding path program 1 times [2023-12-05 21:12:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:23,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324928048] [2023-12-05 21:12:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:24,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:24,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324928048] [2023-12-05 21:12:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324928048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:24,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363269069] [2023-12-05 21:12:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:24,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:24,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:24,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:24,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-05 21:12:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:24,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-05 21:12:24,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:24,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-05 21:12:24,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-05 21:12:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:24,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:25,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-05 21:12:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:25,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363269069] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:25,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:25,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 31 [2023-12-05 21:12:25,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502109911] [2023-12-05 21:12:25,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:25,627 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-05 21:12:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-05 21:12:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-12-05 21:12:25,628 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 87 [2023-12-05 21:12:25,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 648 transitions, 9827 flow. Second operand has 32 states, 32 states have (on average 45.75) internal successors, (1464), 32 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:25,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:25,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 87 [2023-12-05 21:12:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:27,373 INFO L124 PetriNetUnfolderBase]: 2120/5759 cut-off events. [2023-12-05 21:12:27,374 INFO L125 PetriNetUnfolderBase]: For 72804/74786 co-relation queries the response was YES. [2023-12-05 21:12:27,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34980 conditions, 5759 events. 2120/5759 cut-off events. For 72804/74786 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 42182 event pairs, 334 based on Foata normal form. 466/5993 useless extension candidates. Maximal degree in co-relation 34560. Up to 2571 conditions per place. [2023-12-05 21:12:27,419 INFO L140 encePairwiseOnDemand]: 70/87 looper letters, 781 selfloop transitions, 111 changer transitions 1/1050 dead transitions. [2023-12-05 21:12:27,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1050 transitions, 18815 flow [2023-12-05 21:12:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-05 21:12:27,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-05 21:12:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1030 transitions. [2023-12-05 21:12:27,421 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5919540229885057 [2023-12-05 21:12:27,421 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1030 transitions. [2023-12-05 21:12:27,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1030 transitions. [2023-12-05 21:12:27,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:27,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1030 transitions. [2023-12-05 21:12:27,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 51.5) internal successors, (1030), 20 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:27,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 87.0) internal successors, (1827), 21 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:27,425 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 87.0) internal successors, (1827), 21 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:27,425 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 144 predicate places. [2023-12-05 21:12:27,425 INFO L500 AbstractCegarLoop]: Abstraction has has 228 places, 1050 transitions, 18815 flow [2023-12-05 21:12:27,426 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 45.75) internal successors, (1464), 32 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:27,426 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:27,426 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:27,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-05 21:12:27,631 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-05 21:12:27,631 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:27,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1836616893, now seen corresponding path program 2 times [2023-12-05 21:12:27,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:27,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334740682] [2023-12-05 21:12:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:28,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334740682] [2023-12-05 21:12:28,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334740682] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:28,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206318245] [2023-12-05 21:12:28,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-05 21:12:28,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:28,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:28,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:28,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-05 21:12:28,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-05 21:12:28,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-05 21:12:28,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-05 21:12:28,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:28,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-05 21:12:28,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-05 21:12:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:29,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:30,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-05 21:12:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 52 proven. 23 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:30,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206318245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:30,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:30,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 47 [2023-12-05 21:12:30,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155815474] [2023-12-05 21:12:30,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:30,680 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-05 21:12:30,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:30,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-05 21:12:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1978, Unknown=0, NotChecked=0, Total=2256 [2023-12-05 21:12:30,682 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 87 [2023-12-05 21:12:30,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 1050 transitions, 18815 flow. Second operand has 48 states, 48 states have (on average 46.458333333333336) internal successors, (2230), 48 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:30,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:30,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 87 [2023-12-05 21:12:30,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:34,664 INFO L124 PetriNetUnfolderBase]: 2548/6941 cut-off events. [2023-12-05 21:12:34,664 INFO L125 PetriNetUnfolderBase]: For 101857/105249 co-relation queries the response was YES. [2023-12-05 21:12:34,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46886 conditions, 6941 events. 2548/6941 cut-off events. For 101857/105249 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 52110 event pairs, 292 based on Foata normal form. 510/7170 useless extension candidates. Maximal degree in co-relation 46447. Up to 3304 conditions per place. [2023-12-05 21:12:34,714 INFO L140 encePairwiseOnDemand]: 71/87 looper letters, 997 selfloop transitions, 127 changer transitions 204/1428 dead transitions. [2023-12-05 21:12:34,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1428 transitions, 28975 flow [2023-12-05 21:12:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-05 21:12:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-12-05 21:12:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 2811 transitions. [2023-12-05 21:12:34,718 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5769704433497537 [2023-12-05 21:12:34,718 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 2811 transitions. [2023-12-05 21:12:34,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 2811 transitions. [2023-12-05 21:12:34,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:34,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 2811 transitions. [2023-12-05 21:12:34,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 50.19642857142857) internal successors, (2811), 56 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:34,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 87.0) internal successors, (4959), 57 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:34,728 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 87.0) internal successors, (4959), 57 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:34,728 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 198 predicate places. [2023-12-05 21:12:34,728 INFO L500 AbstractCegarLoop]: Abstraction has has 282 places, 1428 transitions, 28975 flow [2023-12-05 21:12:34,729 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 46.458333333333336) internal successors, (2230), 48 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:34,729 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:34,729 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:34,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-05 21:12:34,934 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:34,935 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:34,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1411841275, now seen corresponding path program 2 times [2023-12-05 21:12:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902145081] [2023-12-05 21:12:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:34,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:35,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:35,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902145081] [2023-12-05 21:12:35,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902145081] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:35,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126794798] [2023-12-05 21:12:35,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-05 21:12:35,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:35,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:35,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-05 21:12:35,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-05 21:12:35,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-05 21:12:35,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-05 21:12:35,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:36,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-05 21:12:36,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-05 21:12:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:36,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:37,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2023-12-05 21:12:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 52 proven. 23 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126794798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:37,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 47 [2023-12-05 21:12:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472696577] [2023-12-05 21:12:37,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:37,988 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-05 21:12:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-05 21:12:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1978, Unknown=0, NotChecked=0, Total=2256 [2023-12-05 21:12:37,995 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 87 [2023-12-05 21:12:38,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1428 transitions, 28975 flow. Second operand has 48 states, 48 states have (on average 46.458333333333336) internal successors, (2230), 48 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:38,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:38,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 87 [2023-12-05 21:12:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:41,939 INFO L124 PetriNetUnfolderBase]: 3020/8231 cut-off events. [2023-12-05 21:12:41,939 INFO L125 PetriNetUnfolderBase]: For 141188/145735 co-relation queries the response was YES. [2023-12-05 21:12:41,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60878 conditions, 8231 events. 3020/8231 cut-off events. For 141188/145735 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 63159 event pairs, 216 based on Foata normal form. 707/8645 useless extension candidates. Maximal degree in co-relation 60419. Up to 3960 conditions per place. [2023-12-05 21:12:42,052 INFO L140 encePairwiseOnDemand]: 70/87 looper letters, 1307 selfloop transitions, 189 changer transitions 244/1868 dead transitions. [2023-12-05 21:12:42,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1868 transitions, 42293 flow [2023-12-05 21:12:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-05 21:12:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-05 21:12:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1598 transitions. [2023-12-05 21:12:42,055 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5739942528735632 [2023-12-05 21:12:42,055 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1598 transitions. [2023-12-05 21:12:42,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1598 transitions. [2023-12-05 21:12:42,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:42,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1598 transitions. [2023-12-05 21:12:42,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 49.9375) internal successors, (1598), 32 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:42,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 87.0) internal successors, (2871), 33 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:42,061 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 87.0) internal successors, (2871), 33 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:42,062 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 228 predicate places. [2023-12-05 21:12:42,062 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 1868 transitions, 42293 flow [2023-12-05 21:12:42,063 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 46.458333333333336) internal successors, (2230), 48 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:42,063 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:42,063 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:42,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-05 21:12:42,268 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:42,268 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:42,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash -760620066, now seen corresponding path program 1 times [2023-12-05 21:12:42,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:42,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657069768] [2023-12-05 21:12:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:42,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657069768] [2023-12-05 21:12:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657069768] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164969034] [2023-12-05 21:12:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:42,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:42,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:42,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:42,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-05 21:12:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:42,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-05 21:12:42,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:42,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:42,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164969034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:42,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:42,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-12-05 21:12:42,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977808266] [2023-12-05 21:12:42,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:42,754 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-05 21:12:42,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-05 21:12:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2023-12-05 21:12:42,756 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2023-12-05 21:12:42,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1868 transitions, 42293 flow. Second operand has 22 states, 22 states have (on average 72.31818181818181) internal successors, (1591), 22 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:42,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:42,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2023-12-05 21:12:42,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:48,219 INFO L124 PetriNetUnfolderBase]: 5194/14016 cut-off events. [2023-12-05 21:12:48,219 INFO L125 PetriNetUnfolderBase]: For 259011/265669 co-relation queries the response was YES. [2023-12-05 21:12:48,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108726 conditions, 14016 events. 5194/14016 cut-off events. For 259011/265669 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 111805 event pairs, 346 based on Foata normal form. 384/13959 useless extension candidates. Maximal degree in co-relation 108263. Up to 7795 conditions per place. [2023-12-05 21:12:48,343 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 1373 selfloop transitions, 27 changer transitions 244/2522 dead transitions. [2023-12-05 21:12:48,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 2522 transitions, 63109 flow [2023-12-05 21:12:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-05 21:12:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-05 21:12:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1990 transitions. [2023-12-05 21:12:48,351 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8471690080885483 [2023-12-05 21:12:48,351 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1990 transitions. [2023-12-05 21:12:48,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1990 transitions. [2023-12-05 21:12:48,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:48,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1990 transitions. [2023-12-05 21:12:48,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 73.70370370370371) internal successors, (1990), 27 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:48,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 87.0) internal successors, (2436), 28 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:48,363 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 87.0) internal successors, (2436), 28 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:48,363 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 254 predicate places. [2023-12-05 21:12:48,364 INFO L500 AbstractCegarLoop]: Abstraction has has 338 places, 2522 transitions, 63109 flow [2023-12-05 21:12:48,364 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 72.31818181818181) internal successors, (1591), 22 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:48,364 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:48,364 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:48,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-05 21:12:48,570 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-05 21:12:48,571 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:48,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1258321457, now seen corresponding path program 2 times [2023-12-05 21:12:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:48,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872726562] [2023-12-05 21:12:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:48,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:48,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872726562] [2023-12-05 21:12:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872726562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472495182] [2023-12-05 21:12:48,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-05 21:12:48,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:48,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:48,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:48,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-05 21:12:49,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-05 21:12:49,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-05 21:12:49,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-05 21:12:49,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:12:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:49,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:12:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 657 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-05 21:12:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472495182] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:12:49,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:12:49,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2023-12-05 21:12:49,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112017894] [2023-12-05 21:12:49,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:12:49,747 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-05 21:12:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:49,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-05 21:12:49,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-12-05 21:12:49,748 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2023-12-05 21:12:49,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 2522 transitions, 63109 flow. Second operand has 23 states, 23 states have (on average 72.34782608695652) internal successors, (1664), 23 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:49,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:49,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2023-12-05 21:12:49,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:57,921 INFO L124 PetriNetUnfolderBase]: 5729/15429 cut-off events. [2023-12-05 21:12:57,922 INFO L125 PetriNetUnfolderBase]: For 314221/321693 co-relation queries the response was YES. [2023-12-05 21:12:57,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124987 conditions, 15429 events. 5729/15429 cut-off events. For 314221/321693 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 123740 event pairs, 385 based on Foata normal form. 400/15351 useless extension candidates. Maximal degree in co-relation 124520. Up to 8749 conditions per place. [2023-12-05 21:12:58,059 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 1528 selfloop transitions, 30 changer transitions 244/2680 dead transitions. [2023-12-05 21:12:58,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 2680 transitions, 71001 flow [2023-12-05 21:12:58,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-05 21:12:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-05 21:12:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2206 transitions. [2023-12-05 21:12:58,063 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8452107279693487 [2023-12-05 21:12:58,063 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2206 transitions. [2023-12-05 21:12:58,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2206 transitions. [2023-12-05 21:12:58,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:58,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2206 transitions. [2023-12-05 21:12:58,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 73.53333333333333) internal successors, (2206), 30 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:58,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:58,070 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 87.0) internal successors, (2697), 31 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:58,071 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 283 predicate places. [2023-12-05 21:12:58,071 INFO L500 AbstractCegarLoop]: Abstraction has has 367 places, 2680 transitions, 71001 flow [2023-12-05 21:12:58,071 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 72.34782608695652) internal successors, (1664), 23 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:58,071 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:58,071 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:58,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-05 21:12:58,277 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-05 21:12:58,278 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:12:58,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 9786620, now seen corresponding path program 3 times [2023-12-05 21:12:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:58,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554748763] [2023-12-05 21:12:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2023-12-05 21:12:58,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554748763] [2023-12-05 21:12:58,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554748763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:12:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690058285] [2023-12-05 21:12:58,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-05 21:12:58,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:12:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:58,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:12:58,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-05 21:13:08,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-05 21:13:08,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-05 21:13:08,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-05 21:13:08,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:13:09,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-05 21:13:09,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-05 21:13:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2023-12-05 21:13:09,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:13:09,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-05 21:13:09,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2023-12-05 21:13:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2023-12-05 21:13:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690058285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:13:09,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:13:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2023-12-05 21:13:09,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739745398] [2023-12-05 21:13:09,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:13:09,635 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-05 21:13:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-05 21:13:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-05 21:13:09,636 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 87 [2023-12-05 21:13:09,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 2680 transitions, 71001 flow. Second operand has 26 states, 26 states have (on average 46.5) internal successors, (1209), 26 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:09,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:09,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 87 [2023-12-05 21:13:09,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:26,316 INFO L124 PetriNetUnfolderBase]: 11030/29367 cut-off events. [2023-12-05 21:13:26,316 INFO L125 PetriNetUnfolderBase]: For 641749/649553 co-relation queries the response was YES. [2023-12-05 21:13:26,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244055 conditions, 29367 events. 11030/29367 cut-off events. For 641749/649553 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 256048 event pairs, 241 based on Foata normal form. 775/29799 useless extension candidates. Maximal degree in co-relation 243568. Up to 16097 conditions per place. [2023-12-05 21:13:26,544 INFO L140 encePairwiseOnDemand]: 69/87 looper letters, 999 selfloop transitions, 396 changer transitions 3108/4634 dead transitions. [2023-12-05 21:13:26,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 4634 transitions, 132539 flow [2023-12-05 21:13:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-05 21:13:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-12-05 21:13:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1205 transitions. [2023-12-05 21:13:26,546 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5771072796934866 [2023-12-05 21:13:26,546 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1205 transitions. [2023-12-05 21:13:26,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1205 transitions. [2023-12-05 21:13:26,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:26,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1205 transitions. [2023-12-05 21:13:26,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 50.208333333333336) internal successors, (1205), 24 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:26,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 87.0) internal successors, (2175), 25 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:26,549 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 87.0) internal successors, (2175), 25 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:26,550 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 306 predicate places. [2023-12-05 21:13:26,550 INFO L500 AbstractCegarLoop]: Abstraction has has 390 places, 4634 transitions, 132539 flow [2023-12-05 21:13:26,550 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.5) internal successors, (1209), 26 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:26,550 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:26,550 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:13:26,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-05 21:13:26,762 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-05 21:13:26,762 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:13:26,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash -502723050, now seen corresponding path program 4 times [2023-12-05 21:13:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:26,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624434693] [2023-12-05 21:13:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:26,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-05 21:13:27,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:27,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624434693] [2023-12-05 21:13:27,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624434693] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:13:27,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714448185] [2023-12-05 21:13:27,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-05 21:13:27,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:13:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:13:27,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:13:27,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-05 21:13:28,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-05 21:13:28,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-05 21:13:28,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-05 21:13:28,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:13:29,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-05 21:13:29,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-05 21:13:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-12-05 21:13:29,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:13:29,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-05 21:13:29,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2023-12-05 21:13:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-12-05 21:13:29,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714448185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:13:29,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:13:29,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 27 [2023-12-05 21:13:29,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273958989] [2023-12-05 21:13:29,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:13:29,855 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-05 21:13:29,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-05 21:13:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2023-12-05 21:13:29,856 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 87 [2023-12-05 21:13:29,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 4634 transitions, 132539 flow. Second operand has 28 states, 28 states have (on average 46.67857142857143) internal successors, (1307), 28 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:29,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:29,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 87 [2023-12-05 21:13:29,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:14:15,771 INFO L124 PetriNetUnfolderBase]: 16532/44704 cut-off events. [2023-12-05 21:14:15,772 INFO L125 PetriNetUnfolderBase]: For 1158404/1167918 co-relation queries the response was YES. [2023-12-05 21:14:15,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407825 conditions, 44704 events. 16532/44704 cut-off events. For 1158404/1167918 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 423297 event pairs, 255 based on Foata normal form. 489/44847 useless extension candidates. Maximal degree in co-relation 407318. Up to 25573 conditions per place. [2023-12-05 21:14:16,309 INFO L140 encePairwiseOnDemand]: 71/87 looper letters, 510 selfloop transitions, 140 changer transitions 6469/7250 dead transitions. [2023-12-05 21:14:16,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 7250 transitions, 226985 flow [2023-12-05 21:14:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-05 21:14:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-05 21:14:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 716 transitions. [2023-12-05 21:14:16,311 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5878489326765188 [2023-12-05 21:14:16,311 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 716 transitions. [2023-12-05 21:14:16,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 716 transitions. [2023-12-05 21:14:16,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:14:16,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 716 transitions. [2023-12-05 21:14:16,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 51.142857142857146) internal successors, (716), 14 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:14:16,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 87.0) internal successors, (1305), 15 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:14:16,313 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 87.0) internal successors, (1305), 15 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:14:16,314 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 318 predicate places. [2023-12-05 21:14:16,314 INFO L500 AbstractCegarLoop]: Abstraction has has 402 places, 7250 transitions, 226985 flow [2023-12-05 21:14:16,314 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 46.67857142857143) internal successors, (1307), 28 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:14:16,314 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:14:16,314 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:14:16,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-05 21:14:16,522 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-05 21:14:16,522 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-12-05 21:14:16,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:14:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash -563012032, now seen corresponding path program 5 times [2023-12-05 21:14:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:14:16,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465459401] [2023-12-05 21:14:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:14:16,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:14:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:14:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2023-12-05 21:14:17,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:14:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465459401] [2023-12-05 21:14:17,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465459401] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:14:17,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38886053] [2023-12-05 21:14:17,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-05 21:14:17,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:14:17,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:14:17,042 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-05 21:14:17,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-05 21:14:39,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-12-05 21:14:39,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-05 21:14:39,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-05 21:14:39,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:14:40,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-05 21:14:40,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-05 21:14:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2023-12-05 21:14:40,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:14:40,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-05 21:14:40,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2023-12-05 21:14:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1055 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2023-12-05 21:14:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38886053] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:14:41,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:14:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2023-12-05 21:14:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444454689] [2023-12-05 21:14:41,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:14:41,347 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-05 21:14:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:14:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-05 21:14:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2023-12-05 21:14:41,350 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 87 [2023-12-05 21:14:41,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 7250 transitions, 226985 flow. Second operand has 27 states, 27 states have (on average 46.51851851851852) internal successors, (1256), 27 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:14:41,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:14:41,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 87 [2023-12-05 21:14:41,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-05 21:16:34,752 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-05 21:16:34,752 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-05 21:16:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-05 21:16:35,012 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-12-05 21:16:35,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-05 21:16:35,225 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:16:35,225 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). [2023-12-05 21:16:35,226 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2023-12-05 21:16:35,228 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2023-12-05 21:16:35,229 INFO L457 BasicCegarLoop]: Path program histogram: [5, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-05 21:16:35,236 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:16:35,236 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:16:35,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:16:35 BasicIcfg [2023-12-05 21:16:35,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:16:35,240 INFO L158 Benchmark]: Toolchain (without parser) took 261896.32ms. Allocated memory was 271.6MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 224.7MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-12-05 21:16:35,240 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory was 153.1MB in the beginning and 152.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:16:35,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 469.60ms. Allocated memory is still 271.6MB. Free memory was 224.4MB in the beginning and 196.4MB in the end (delta: 28.0MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-05 21:16:35,240 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.34ms. Allocated memory is still 271.6MB. Free memory was 196.4MB in the beginning and 194.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:16:35,240 INFO L158 Benchmark]: Boogie Preprocessor took 29.78ms. Allocated memory is still 271.6MB. Free memory was 194.0MB in the beginning and 192.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:16:35,241 INFO L158 Benchmark]: RCFGBuilder took 369.02ms. Allocated memory is still 271.6MB. Free memory was 192.3MB in the beginning and 176.2MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-05 21:16:35,241 INFO L158 Benchmark]: TraceAbstraction took 260975.42ms. Allocated memory was 271.6MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 175.5MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-12-05 21:16:35,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 205.5MB. Free memory was 153.1MB in the beginning and 152.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 469.60ms. Allocated memory is still 271.6MB. Free memory was 224.4MB in the beginning and 196.4MB in the end (delta: 28.0MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.34ms. Allocated memory is still 271.6MB. Free memory was 196.4MB in the beginning and 194.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.78ms. Allocated memory is still 271.6MB. Free memory was 194.0MB in the beginning and 192.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 369.02ms. Allocated memory is still 271.6MB. Free memory was 192.3MB in the beginning and 176.2MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 260975.42ms. Allocated memory was 271.6MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 175.5MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: 937]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (27states, 43/87 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 576773 conditions, 58225 events (21495/58224 cut-off events. For 1709924/1720191 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 625345 event pairs, 232 based on Foata normal form. 488/58869 useless extension candidates. Maximal degree in co-relation 576246. Up to 34612 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 111 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 260.9s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 205.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6684 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6684 mSDsluCounter, 2126 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1787 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8245 IncrementalHoareTripleChecker+Invalid, 8337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 339 mSDtfsCounter, 8245 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3946 GetRequests, 3301 SyntacticMatches, 44 SemanticMatches, 601 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7300 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226985occurred in iteration=18, InterpolantAutomatonStates: 345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 33.5s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 3887 NumberOfCodeBlocks, 3887 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 5598 ConstructedInterpolants, 522 QuantifiedInterpolants, 52822 SizeOfPredicates, 131 NumberOfNonLiveVariables, 4585 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 12980/17893 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-05 21:16:35,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 !ENTRY org.eclipse.osgi 4 0 2023-12-05 21:16:35.476 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9614be93/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9614be93/.metadata/.log.