/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/28-race_reach_82-list_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:18:11,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:18:11,866 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 21:18:11,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:18:11,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:18:11,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:18:11,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:18:11,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:18:11,895 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:18:11,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:18:11,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:18:11,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:18:11,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:18:11,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:18:11,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:18:11,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:18:11,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:18:11,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:18:11,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:18:11,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:18:11,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:18:11,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:18:11,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:18:11,901 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:18:11,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:18:11,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:18:11,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:18:11,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:18:11,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:18:11,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:18:11,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:18:11,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:18:11,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:18:11,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:18:12,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:18:12,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:18:12,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:18:12,082 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:18:12,083 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:18:12,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-12-05 21:18:13,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:18:13,294 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:18:13,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_82-list_racefree.i [2023-12-05 21:18:13,310 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45fd4c9a4/1d14b649a5b541349e15919da1e0ebc5/FLAGa675706bb [2023-12-05 21:18:13,325 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45fd4c9a4/1d14b649a5b541349e15919da1e0ebc5 [2023-12-05 21:18:13,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:18:13,328 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:18:13,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:18:13,329 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:18:13,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:18:13,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c428578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13, skipping insertion in model container [2023-12-05 21:18:13,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:18:13,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:18:13,697 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:18:13,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:18:13,812 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:18:13,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13 WrapperNode [2023-12-05 21:18:13,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:18:13,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:18:13,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:18:13,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:18:13,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,863 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 232 [2023-12-05 21:18:13,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:18:13,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:18:13,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:18:13,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:18:13,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:18:13,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:18:13,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:18:13,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:18:13,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (1/1) ... [2023-12-05 21:18:13,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:18:13,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:18:13,933 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 21:18:13,965 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 21:18:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:18:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-05 21:18:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-12-05 21:18:13,970 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-12-05 21:18:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:18:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:18:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:18:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-12-05 21:18:13,971 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-12-05 21:18:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:18:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:18:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-05 21:18:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:18:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-05 21:18:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:18:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:18:13,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:18:13,973 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 21:18:14,090 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:18:14,092 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:18:14,378 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:18:14,398 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:18:14,399 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-05 21:18:14,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:18:14 BoogieIcfgContainer [2023-12-05 21:18:14,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:18:14,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:18:14,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:18:14,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:18:14,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:18:13" (1/3) ... [2023-12-05 21:18:14,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721bebba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:18:14, skipping insertion in model container [2023-12-05 21:18:14,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:18:13" (2/3) ... [2023-12-05 21:18:14,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721bebba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:18:14, skipping insertion in model container [2023-12-05 21:18:14,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:18:14" (3/3) ... [2023-12-05 21:18:14,406 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-12-05 21:18:14,418 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:18:14,418 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-12-05 21:18:14,419 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:18:14,486 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-05 21:18:14,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 269 transitions, 558 flow [2023-12-05 21:18:14,617 INFO L124 PetriNetUnfolderBase]: 54/521 cut-off events. [2023-12-05 21:18:14,617 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-05 21:18:14,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 521 events. 54/521 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2437 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 259. Up to 8 conditions per place. [2023-12-05 21:18:14,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 269 transitions, 558 flow [2023-12-05 21:18:14,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 269 transitions, 558 flow [2023-12-05 21:18:14,649 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:18:14,654 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;@335152ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:18:14,654 INFO L363 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-12-05 21:18:14,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:18:14,663 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-12-05 21:18:14,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:18:14,663 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:14,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:18:14,664 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:14,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2125455305, now seen corresponding path program 1 times [2023-12-05 21:18:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:14,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615411222] [2023-12-05 21:18:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:14,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:14,952 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 21:18:14,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615411222] [2023-12-05 21:18:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615411222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:18:14,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:18:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:18:14,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021270414] [2023-12-05 21:18:14,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:18:14,960 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:18:14,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:18:14,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:18:14,981 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 269 [2023-12-05 21:18:14,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 269 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 173.5) internal successors, (1041), 6 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 21:18:14,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:14,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 269 [2023-12-05 21:18:14,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:18:17,481 INFO L124 PetriNetUnfolderBase]: 7822/20338 cut-off events. [2023-12-05 21:18:17,481 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-12-05 21:18:17,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32617 conditions, 20338 events. 7822/20338 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 237913 event pairs, 5152 based on Foata normal form. 2627/18422 useless extension candidates. Maximal degree in co-relation 29896. Up to 8468 conditions per place. [2023-12-05 21:18:17,638 INFO L140 encePairwiseOnDemand]: 242/269 looper letters, 109 selfloop transitions, 8 changer transitions 0/286 dead transitions. [2023-12-05 21:18:17,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 286 transitions, 826 flow [2023-12-05 21:18:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:18:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:18:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1346 transitions. [2023-12-05 21:18:17,654 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7148167817312798 [2023-12-05 21:18:17,655 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1346 transitions. [2023-12-05 21:18:17,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1346 transitions. [2023-12-05 21:18:17,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:18:17,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1346 transitions. [2023-12-05 21:18:17,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 192.28571428571428) internal successors, (1346), 7 states have internal predecessors, (1346), 0 states have call successors, (0), 0 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 21:18:17,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:18:17,674 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:18:17,677 INFO L308 CegarLoopForPetriNet]: 250 programPoint places, 1 predicate places. [2023-12-05 21:18:17,678 INFO L500 AbstractCegarLoop]: Abstraction has has 251 places, 286 transitions, 826 flow [2023-12-05 21:18:17,678 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.5) internal successors, (1041), 6 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 21:18:17,679 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:17,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:18:17,679 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:18:17,679 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:17,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2125455306, now seen corresponding path program 1 times [2023-12-05 21:18:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391048829] [2023-12-05 21:18:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:17,897 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 21:18:17,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:17,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391048829] [2023-12-05 21:18:17,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391048829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:18:17,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:18:17,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:18:17,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113309386] [2023-12-05 21:18:17,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:18:17,901 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:18:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:18:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:18:17,904 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 269 [2023-12-05 21:18:17,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 286 transitions, 826 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 21:18:17,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:17,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 269 [2023-12-05 21:18:17,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:18:21,466 INFO L124 PetriNetUnfolderBase]: 14866/36030 cut-off events. [2023-12-05 21:18:21,466 INFO L125 PetriNetUnfolderBase]: For 8965/11660 co-relation queries the response was YES. [2023-12-05 21:18:21,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72635 conditions, 36030 events. 14866/36030 cut-off events. For 8965/11660 co-relation queries the response was YES. Maximal size of possible extension queue 2125. Compared 451734 event pairs, 11267 based on Foata normal form. 0/33984 useless extension candidates. Maximal degree in co-relation 68303. Up to 17336 conditions per place. [2023-12-05 21:18:21,688 INFO L140 encePairwiseOnDemand]: 259/269 looper letters, 92 selfloop transitions, 8 changer transitions 0/284 dead transitions. [2023-12-05 21:18:21,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 284 transitions, 1018 flow [2023-12-05 21:18:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:18:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:18:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-12-05 21:18:21,691 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6866702071163038 [2023-12-05 21:18:21,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-12-05 21:18:21,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-12-05 21:18:21,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:18:21,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-12-05 21:18:21,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 0 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 21:18:21,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:18:21,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:18:21,699 INFO L308 CegarLoopForPetriNet]: 250 programPoint places, 5 predicate places. [2023-12-05 21:18:21,700 INFO L500 AbstractCegarLoop]: Abstraction has has 255 places, 284 transitions, 1018 flow [2023-12-05 21:18:21,700 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 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 21:18:21,700 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:21,701 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, 1, 1, 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 21:18:21,701 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:18:21,702 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:21,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1222684758, now seen corresponding path program 1 times [2023-12-05 21:18:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432006372] [2023-12-05 21:18:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:21,838 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 21:18:21,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:21,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432006372] [2023-12-05 21:18:21,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432006372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:18:21,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:18:21,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:18:21,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906900690] [2023-12-05 21:18:21,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:18:21,840 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:18:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:21,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:18:21,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:18:21,841 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 269 [2023-12-05 21:18:21,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 284 transitions, 1018 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 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 21:18:21,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:21,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 269 [2023-12-05 21:18:21,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:18:25,829 INFO L124 PetriNetUnfolderBase]: 16201/41469 cut-off events. [2023-12-05 21:18:25,829 INFO L125 PetriNetUnfolderBase]: For 26508/34790 co-relation queries the response was YES. [2023-12-05 21:18:26,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98804 conditions, 41469 events. 16201/41469 cut-off events. For 26508/34790 co-relation queries the response was YES. Maximal size of possible extension queue 2369. Compared 529311 event pairs, 11641 based on Foata normal form. 1/38876 useless extension candidates. Maximal degree in co-relation 95485. Up to 19037 conditions per place. [2023-12-05 21:18:26,198 INFO L140 encePairwiseOnDemand]: 262/269 looper letters, 158 selfloop transitions, 7 changer transitions 0/351 dead transitions. [2023-12-05 21:18:26,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 351 transitions, 1701 flow [2023-12-05 21:18:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:18:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:18:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 829 transitions. [2023-12-05 21:18:26,201 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7704460966542751 [2023-12-05 21:18:26,201 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 829 transitions. [2023-12-05 21:18:26,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 829 transitions. [2023-12-05 21:18:26,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:18:26,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 829 transitions. [2023-12-05 21:18:26,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 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 21:18:26,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 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 21:18:26,207 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 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 21:18:26,208 INFO L308 CegarLoopForPetriNet]: 250 programPoint places, 8 predicate places. [2023-12-05 21:18:26,208 INFO L500 AbstractCegarLoop]: Abstraction has has 258 places, 351 transitions, 1701 flow [2023-12-05 21:18:26,209 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 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 21:18:26,209 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:26,209 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, 1, 1, 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 21:18:26,209 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:18:26,209 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:26,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1222684759, now seen corresponding path program 1 times [2023-12-05 21:18:26,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354561736] [2023-12-05 21:18:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:26,264 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 21:18:26,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354561736] [2023-12-05 21:18:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354561736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:18:26,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:18:26,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:18:26,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110075351] [2023-12-05 21:18:26,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:18:26,268 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:18:26,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:18:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:18:26,270 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 269 [2023-12-05 21:18:26,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 351 transitions, 1701 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 21:18:26,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:26,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 269 [2023-12-05 21:18:26,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:18:30,119 INFO L124 PetriNetUnfolderBase]: 15364/38724 cut-off events. [2023-12-05 21:18:30,119 INFO L125 PetriNetUnfolderBase]: For 44876/59427 co-relation queries the response was YES. [2023-12-05 21:18:30,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111293 conditions, 38724 events. 15364/38724 cut-off events. For 44876/59427 co-relation queries the response was YES. Maximal size of possible extension queue 2199. Compared 484866 event pairs, 10582 based on Foata normal form. 670/37003 useless extension candidates. Maximal degree in co-relation 107544. Up to 17596 conditions per place. [2023-12-05 21:18:30,528 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 150 selfloop transitions, 3 changer transitions 0/346 dead transitions. [2023-12-05 21:18:30,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 346 transitions, 1977 flow [2023-12-05 21:18:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:18:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:18:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-12-05 21:18:30,530 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8004956629491945 [2023-12-05 21:18:30,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-12-05 21:18:30,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-12-05 21:18:30,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:18:30,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-12-05 21:18:30,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 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 21:18:30,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 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 21:18:30,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 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 21:18:30,534 INFO L308 CegarLoopForPetriNet]: 250 programPoint places, 8 predicate places. [2023-12-05 21:18:30,534 INFO L500 AbstractCegarLoop]: Abstraction has has 258 places, 346 transitions, 1977 flow [2023-12-05 21:18:30,535 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 21:18:30,535 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:30,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:30,535 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:18:30,535 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:30,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash -910745182, now seen corresponding path program 1 times [2023-12-05 21:18:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:30,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251048856] [2023-12-05 21:18:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:30,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:18:30,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:30,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251048856] [2023-12-05 21:18:30,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251048856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:18:30,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:18:30,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:18:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671162178] [2023-12-05 21:18:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:18:30,622 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:18:30,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:18:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:18:30,624 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 269 [2023-12-05 21:18:30,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 346 transitions, 1977 flow. Second operand has 6 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 0 states have call successors, (0), 0 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 21:18:30,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:30,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 269 [2023-12-05 21:18:30,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:18:36,867 INFO L124 PetriNetUnfolderBase]: 24385/55319 cut-off events. [2023-12-05 21:18:36,867 INFO L125 PetriNetUnfolderBase]: For 107141/141101 co-relation queries the response was YES. [2023-12-05 21:18:37,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193188 conditions, 55319 events. 24385/55319 cut-off events. For 107141/141101 co-relation queries the response was YES. Maximal size of possible extension queue 2929. Compared 685970 event pairs, 11373 based on Foata normal form. 1109/53055 useless extension candidates. Maximal degree in co-relation 188929. Up to 26693 conditions per place. [2023-12-05 21:18:37,288 INFO L140 encePairwiseOnDemand]: 256/269 looper letters, 452 selfloop transitions, 24 changer transitions 0/666 dead transitions. [2023-12-05 21:18:37,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 666 transitions, 5701 flow [2023-12-05 21:18:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-05 21:18:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-05 21:18:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1703 transitions. [2023-12-05 21:18:37,301 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7913568773234201 [2023-12-05 21:18:37,301 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1703 transitions. [2023-12-05 21:18:37,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1703 transitions. [2023-12-05 21:18:37,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:18:37,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1703 transitions. [2023-12-05 21:18:37,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 212.875) internal successors, (1703), 8 states have internal predecessors, (1703), 0 states have call successors, (0), 0 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 21:18:37,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 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 21:18:37,308 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 269.0) internal successors, (2421), 9 states have internal predecessors, (2421), 0 states have call successors, (0), 0 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 21:18:37,310 INFO L308 CegarLoopForPetriNet]: 250 programPoint places, 15 predicate places. [2023-12-05 21:18:37,310 INFO L500 AbstractCegarLoop]: Abstraction has has 265 places, 666 transitions, 5701 flow [2023-12-05 21:18:37,311 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 0 states have call successors, (0), 0 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 21:18:37,311 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:37,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:37,311 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:18:37,311 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:37,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash -910745181, now seen corresponding path program 1 times [2023-12-05 21:18:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:37,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660180765] [2023-12-05 21:18:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:37,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:37,449 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 21:18:37,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:37,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660180765] [2023-12-05 21:18:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660180765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:18:37,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:18:37,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:18:37,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455945997] [2023-12-05 21:18:37,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:18:37,453 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:18:37,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:37,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:18:37,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:18:37,455 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 269 [2023-12-05 21:18:37,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 666 transitions, 5701 flow. Second operand has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 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 21:18:37,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 269 [2023-12-05 21:18:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:18:49,831 INFO L124 PetriNetUnfolderBase]: 43106/95697 cut-off events. [2023-12-05 21:18:49,832 INFO L125 PetriNetUnfolderBase]: For 253372/278738 co-relation queries the response was YES. [2023-12-05 21:18:50,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379613 conditions, 95697 events. 43106/95697 cut-off events. For 253372/278738 co-relation queries the response was YES. Maximal size of possible extension queue 5311. Compared 1263416 event pairs, 12314 based on Foata normal form. 2761/95229 useless extension candidates. Maximal degree in co-relation 370262. Up to 45813 conditions per place. [2023-12-05 21:18:51,023 INFO L140 encePairwiseOnDemand]: 259/269 looper letters, 663 selfloop transitions, 22 changer transitions 0/976 dead transitions. [2023-12-05 21:18:51,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 976 transitions, 10382 flow [2023-12-05 21:18:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:18:51,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:18:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1521 transitions. [2023-12-05 21:18:51,026 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8077535847052576 [2023-12-05 21:18:51,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1521 transitions. [2023-12-05 21:18:51,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1521 transitions. [2023-12-05 21:18:51,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:18:51,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1521 transitions. [2023-12-05 21:18:51,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.28571428571428) internal successors, (1521), 7 states have internal predecessors, (1521), 0 states have call successors, (0), 0 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 21:18:51,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:18:51,031 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:18:51,032 INFO L308 CegarLoopForPetriNet]: 250 programPoint places, 21 predicate places. [2023-12-05 21:18:51,032 INFO L500 AbstractCegarLoop]: Abstraction has has 271 places, 976 transitions, 10382 flow [2023-12-05 21:18:51,032 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 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 21:18:51,032 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:51,033 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:18:51,033 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:18:51,033 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:51,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:51,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1446633547, now seen corresponding path program 1 times [2023-12-05 21:18:51,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:51,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914430615] [2023-12-05 21:18:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:51,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:18:51,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:51,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914430615] [2023-12-05 21:18:51,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914430615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:18:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053535032] [2023-12-05 21:18:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:51,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:18:51,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:18:51,145 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 21:18:51,155 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 21:18:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:51,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-05 21:18:51,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:18:51,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-05 21:18:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:18:51,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:18:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:18:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053535032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:18:51,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:18:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-05 21:18:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278008635] [2023-12-05 21:18:51,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:18:51,515 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-05 21:18:51,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-05 21:18:51,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-05 21:18:51,517 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 269 [2023-12-05 21:18:51,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 976 transitions, 10382 flow. Second operand has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 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 21:18:51,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:51,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 269 [2023-12-05 21:18:51,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:18:58,057 INFO L124 PetriNetUnfolderBase]: 19492/47074 cut-off events. [2023-12-05 21:18:58,057 INFO L125 PetriNetUnfolderBase]: For 172304/184661 co-relation queries the response was YES. [2023-12-05 21:18:58,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195819 conditions, 47074 events. 19492/47074 cut-off events. For 172304/184661 co-relation queries the response was YES. Maximal size of possible extension queue 2683. Compared 585316 event pairs, 7862 based on Foata normal form. 18/44702 useless extension candidates. Maximal degree in co-relation 190510. Up to 21300 conditions per place. [2023-12-05 21:18:58,516 INFO L140 encePairwiseOnDemand]: 259/269 looper letters, 262 selfloop transitions, 18 changer transitions 0/523 dead transitions. [2023-12-05 21:18:58,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 523 transitions, 5252 flow [2023-12-05 21:18:58,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-05 21:18:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-05 21:18:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2234 transitions. [2023-12-05 21:18:58,520 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6920693928128873 [2023-12-05 21:18:58,520 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2234 transitions. [2023-12-05 21:18:58,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2234 transitions. [2023-12-05 21:18:58,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:18:58,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2234 transitions. [2023-12-05 21:18:58,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 186.16666666666666) internal successors, (2234), 12 states have internal predecessors, (2234), 0 states have call successors, (0), 0 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 21:18:58,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 0 states have call successors, (0), 0 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 21:18:58,528 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 0 states have call successors, (0), 0 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 21:18:58,528 INFO L308 CegarLoopForPetriNet]: 250 programPoint places, 31 predicate places. [2023-12-05 21:18:58,528 INFO L500 AbstractCegarLoop]: Abstraction has has 281 places, 523 transitions, 5252 flow [2023-12-05 21:18:58,529 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 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 21:18:58,529 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:58,529 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:18:58,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-05 21:18:58,734 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:18:58,734 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-12-05 21:18:58,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:58,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1895967771, now seen corresponding path program 1 times [2023-12-05 21:18:58,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:58,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138255408] [2023-12-05 21:18:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:58,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:18:58,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-05 21:18:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:18:58,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-05 21:18:58,788 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-05 21:18:58,788 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (61 of 62 remaining) [2023-12-05 21:18:58,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 62 remaining) [2023-12-05 21:18:58,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 62 remaining) [2023-12-05 21:18:58,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 62 remaining) [2023-12-05 21:18:58,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 62 remaining) [2023-12-05 21:18:58,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 62 remaining) [2023-12-05 21:18:58,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 62 remaining) [2023-12-05 21:18:58,790 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 62 remaining) [2023-12-05 21:18:58,791 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 62 remaining) [2023-12-05 21:18:58,793 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 62 remaining) [2023-12-05 21:18:58,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 62 remaining) [2023-12-05 21:18:58,795 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 62 remaining) [2023-12-05 21:18:58,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 62 remaining) [2023-12-05 21:18:58,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 62 remaining) [2023-12-05 21:18:58,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 62 remaining) [2023-12-05 21:18:58,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 62 remaining) [2023-12-05 21:18:58,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 62 remaining) [2023-12-05 21:18:58,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 62 remaining) [2023-12-05 21:18:58,797 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 62 remaining) [2023-12-05 21:18:58,798 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 62 remaining) [2023-12-05 21:18:58,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 62 remaining) [2023-12-05 21:18:58,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 62 remaining) [2023-12-05 21:18:58,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 62 remaining) [2023-12-05 21:18:58,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 62 remaining) [2023-12-05 21:18:58,799 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 62 remaining) [2023-12-05 21:18:58,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 62 remaining) [2023-12-05 21:18:58,800 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 62 remaining) [2023-12-05 21:18:58,801 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 62 remaining) [2023-12-05 21:18:58,802 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 62 remaining) [2023-12-05 21:18:58,802 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 62 remaining) [2023-12-05 21:18:58,802 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 62 remaining) [2023-12-05 21:18:58,802 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 62 remaining) [2023-12-05 21:18:58,802 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 62 remaining) [2023-12-05 21:18:58,803 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:18:58,804 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:18:58,806 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-05 21:18:58,806 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-05 21:18:58,875 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-12-05 21:18:58,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 428 transitions, 900 flow [2023-12-05 21:18:59,100 INFO L124 PetriNetUnfolderBase]: 197/1539 cut-off events. [2023-12-05 21:18:59,100 INFO L125 PetriNetUnfolderBase]: For 72/90 co-relation queries the response was YES. [2023-12-05 21:18:59,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 1539 events. 197/1539 cut-off events. For 72/90 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10626 event pairs, 1 based on Foata normal form. 0/1147 useless extension candidates. Maximal degree in co-relation 958. Up to 32 conditions per place. [2023-12-05 21:18:59,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 428 transitions, 900 flow [2023-12-05 21:18:59,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 393 places, 428 transitions, 900 flow [2023-12-05 21:18:59,152 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:18:59,153 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;@335152ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:18:59,153 INFO L363 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-12-05 21:18:59,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:18:59,155 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-12-05 21:18:59,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:18:59,155 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:18:59,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:18:59,155 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 83 more)] === [2023-12-05 21:18:59,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:18:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1259455219, now seen corresponding path program 1 times [2023-12-05 21:18:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:18:59,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548758552] [2023-12-05 21:18:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:18:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:18:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:18:59,209 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 21:18:59,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:18:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548758552] [2023-12-05 21:18:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548758552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:18:59,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:18:59,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:18:59,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006291392] [2023-12-05 21:18:59,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:18:59,210 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:18:59,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:18:59,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:18:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:18:59,212 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 428 [2023-12-05 21:18:59,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 428 transitions, 900 flow. Second operand has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 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 21:18:59,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:18:59,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 428 [2023-12-05 21:18:59,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand