/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_03-munge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:13:38,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:13:38,186 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 21:13:38,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:13:38,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:13:38,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:13:38,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:13:38,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:13:38,221 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:13:38,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:13:38,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:13:38,222 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:13:38,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:13:38,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:13:38,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:13:38,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:13:38,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:13:38,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:13:38,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:13:38,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:13:38,224 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:13:38,227 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:13:38,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:13:38,227 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:13:38,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:13:38,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:13:38,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:13:38,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:13:38,231 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:13:38,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:13:38,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:13:38,232 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:13:38,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:13:38,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:13:38,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:13:38,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:13:38,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:13:38,455 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:13:38,456 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:13:38,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-12-05 21:13:39,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:13:39,667 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:13:39,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-12-05 21:13:39,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3fafc2b/661758b190744ccd9f2f4bd97de7c7ff/FLAGcccd30470 [2023-12-05 21:13:40,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b3fafc2b/661758b190744ccd9f2f4bd97de7c7ff [2023-12-05 21:13:40,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:13:40,058 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:13:40,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:13:40,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:13:40,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:13:40,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da2d4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40, skipping insertion in model container [2023-12-05 21:13:40,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:13:40,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:13:40,426 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:13:40,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:13:40,490 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:13:40,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40 WrapperNode [2023-12-05 21:13:40,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:13:40,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:13:40,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:13:40,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:13:40,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,534 INFO L138 Inliner]: procedures = 173, calls = 48, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 234 [2023-12-05 21:13:40,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:13:40,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:13:40,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:13:40,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:13:40,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:13:40,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:13:40,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:13:40,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:13:40,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (1/1) ... [2023-12-05 21:13:40,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:13:40,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:13:40,593 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 21:13:40,636 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 21:13:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:13:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-12-05 21:13:40,644 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-12-05 21:13:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:13:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:13:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:13:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:13:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-12-05 21:13:40,645 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-12-05 21:13:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:13:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:13:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:13:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:13:40,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:13:40,647 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 21:13:40,780 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:13:40,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:13:41,068 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:13:41,097 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:13:41,097 INFO L309 CfgBuilder]: Removed 24 assume(true) statements. [2023-12-05 21:13:41,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:13:41 BoogieIcfgContainer [2023-12-05 21:13:41,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:13:41,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:13:41,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:13:41,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:13:41,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:13:40" (1/3) ... [2023-12-05 21:13:41,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c776a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:13:41, skipping insertion in model container [2023-12-05 21:13:41,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:40" (2/3) ... [2023-12-05 21:13:41,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c776a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:13:41, skipping insertion in model container [2023-12-05 21:13:41,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:13:41" (3/3) ... [2023-12-05 21:13:41,104 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-12-05 21:13:41,118 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:13:41,119 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:13:41,119 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:13:41,179 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-05 21:13:41,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 234 transitions, 488 flow [2023-12-05 21:13:41,385 INFO L124 PetriNetUnfolderBase]: 61/437 cut-off events. [2023-12-05 21:13:41,385 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-05 21:13:41,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 437 events. 61/437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2067 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 235. Up to 8 conditions per place. [2023-12-05 21:13:41,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 234 transitions, 488 flow [2023-12-05 21:13:41,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 234 transitions, 488 flow [2023-12-05 21:13:41,420 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:13:41,425 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;@1a4bc4ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:13:41,425 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 21:13:41,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:13:41,430 INFO L124 PetriNetUnfolderBase]: 1/40 cut-off events. [2023-12-05 21:13:41,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:13:41,430 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:41,431 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] [2023-12-05 21:13:41,431 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:13:41,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1622113177, now seen corresponding path program 1 times [2023-12-05 21:13:41,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:41,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11576314] [2023-12-05 21:13:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:41,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:41,725 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 21:13:41,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:41,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11576314] [2023-12-05 21:13:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11576314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:13:41,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:13:41,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:13:41,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816595796] [2023-12-05 21:13:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:13:41,735 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:13:41,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:13:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:13:41,758 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 234 [2023-12-05 21:13:41,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 234 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:41,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:41,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 234 [2023-12-05 21:13:41,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:42,766 INFO L124 PetriNetUnfolderBase]: 1873/7006 cut-off events. [2023-12-05 21:13:42,766 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-12-05 21:13:42,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10017 conditions, 7006 events. 1873/7006 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 78875 event pairs, 1088 based on Foata normal form. 2338/8760 useless extension candidates. Maximal degree in co-relation 9039. Up to 1890 conditions per place. [2023-12-05 21:13:42,809 INFO L140 encePairwiseOnDemand]: 202/234 looper letters, 57 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2023-12-05 21:13:42,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 214 transitions, 566 flow [2023-12-05 21:13:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:13:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:13:42,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-12-05 21:13:42,825 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8404558404558404 [2023-12-05 21:13:42,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-12-05 21:13:42,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-12-05 21:13:42,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:42,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-12-05 21:13:42,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:42,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:42,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:42,845 INFO L308 CegarLoopForPetriNet]: 205 programPoint places, -6 predicate places. [2023-12-05 21:13:42,845 INFO L500 AbstractCegarLoop]: Abstraction has has 199 places, 214 transitions, 566 flow [2023-12-05 21:13:42,846 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:42,846 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:42,846 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] [2023-12-05 21:13:42,846 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:13:42,846 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:13:42,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1622113176, now seen corresponding path program 1 times [2023-12-05 21:13:42,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010698451] [2023-12-05 21:13:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:43,002 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 21:13:43,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:43,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010698451] [2023-12-05 21:13:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010698451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:13:43,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:13:43,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:13:43,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832228323] [2023-12-05 21:13:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:13:43,004 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:13:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:43,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:13:43,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:13:43,007 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 234 [2023-12-05 21:13:43,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 214 transitions, 566 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:43,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:43,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 234 [2023-12-05 21:13:43,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:43,885 INFO L124 PetriNetUnfolderBase]: 2177/7619 cut-off events. [2023-12-05 21:13:43,886 INFO L125 PetriNetUnfolderBase]: For 1349/1582 co-relation queries the response was YES. [2023-12-05 21:13:43,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14050 conditions, 7619 events. 2177/7619 cut-off events. For 1349/1582 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 85784 event pairs, 1319 based on Foata normal form. 0/7115 useless extension candidates. Maximal degree in co-relation 13194. Up to 2441 conditions per place. [2023-12-05 21:13:43,931 INFO L140 encePairwiseOnDemand]: 228/234 looper letters, 85 selfloop transitions, 4 changer transitions 0/240 dead transitions. [2023-12-05 21:13:43,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 240 transitions, 846 flow [2023-12-05 21:13:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-05 21:13:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-05 21:13:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 695 transitions. [2023-12-05 21:13:43,933 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7425213675213675 [2023-12-05 21:13:43,933 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 695 transitions. [2023-12-05 21:13:43,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 695 transitions. [2023-12-05 21:13:43,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:43,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 695 transitions. [2023-12-05 21:13:43,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:43,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:43,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:43,937 INFO L308 CegarLoopForPetriNet]: 205 programPoint places, -3 predicate places. [2023-12-05 21:13:43,938 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 240 transitions, 846 flow [2023-12-05 21:13:43,938 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:43,938 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:43,938 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] [2023-12-05 21:13:43,938 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:13:43,938 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:13:43,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2028446461, now seen corresponding path program 1 times [2023-12-05 21:13:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:43,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223140200] [2023-12-05 21:13:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:43,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:44,112 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 21:13:44,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:44,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223140200] [2023-12-05 21:13:44,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223140200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-05 21:13:44,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480818784] [2023-12-05 21:13:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:13:44,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:13:44,115 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 21:13:44,148 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 21:13:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:44,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-05 21:13:44,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-05 21:13:44,231 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 21:13:44,327 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 21:13:44,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-05 21:13:44,426 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 21:13:44,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480818784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-05 21:13:44,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-05 21:13:44,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-12-05 21:13:44,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897879509] [2023-12-05 21:13:44,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-05 21:13:44,427 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-05 21:13:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-05 21:13:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-12-05 21:13:44,430 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 234 [2023-12-05 21:13:44,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 240 transitions, 846 flow. Second operand has 14 states, 14 states have (on average 156.57142857142858) internal successors, (2192), 14 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:44,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:44,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 234 [2023-12-05 21:13:44,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:44,577 INFO L124 PetriNetUnfolderBase]: 42/233 cut-off events. [2023-12-05 21:13:44,577 INFO L125 PetriNetUnfolderBase]: For 161/218 co-relation queries the response was YES. [2023-12-05 21:13:44,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 233 events. 42/233 cut-off events. For 161/218 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 918 event pairs, 0 based on Foata normal form. 8/231 useless extension candidates. Maximal degree in co-relation 501. Up to 60 conditions per place. [2023-12-05 21:13:44,578 INFO L140 encePairwiseOnDemand]: 227/234 looper letters, 43 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2023-12-05 21:13:44,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 120 transitions, 520 flow [2023-12-05 21:13:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:13:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:13:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2023-12-05 21:13:44,580 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6886446886446886 [2023-12-05 21:13:44,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2023-12-05 21:13:44,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2023-12-05 21:13:44,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:44,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2023-12-05 21:13:44,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:44,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:44,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:44,586 INFO L308 CegarLoopForPetriNet]: 205 programPoint places, -97 predicate places. [2023-12-05 21:13:44,586 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 120 transitions, 520 flow [2023-12-05 21:13:44,587 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 156.57142857142858) internal successors, (2192), 14 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:44,587 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:44,588 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] [2023-12-05 21:13:44,609 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 21:13:44,793 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-05 21:13:44,793 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:13:44,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1542668419, now seen corresponding path program 1 times [2023-12-05 21:13:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:44,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61294121] [2023-12-05 21:13:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:44,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:13:44,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-05 21:13:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-05 21:13:44,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-05 21:13:44,856 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-05 21:13:44,856 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-12-05 21:13:44,858 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2023-12-05 21:13:44,859 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-12-05 21:13:44,859 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:13:44,859 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:13:44,861 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-05 21:13:44,861 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-05 21:13:44,900 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-12-05 21:13:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 372 transitions, 788 flow [2023-12-05 21:13:45,043 INFO L124 PetriNetUnfolderBase]: 205/1287 cut-off events. [2023-12-05 21:13:45,044 INFO L125 PetriNetUnfolderBase]: For 72/75 co-relation queries the response was YES. [2023-12-05 21:13:45,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1287 events. 205/1287 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8218 event pairs, 1 based on Foata normal form. 0/1007 useless extension candidates. Maximal degree in co-relation 777. Up to 32 conditions per place. [2023-12-05 21:13:45,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 372 transitions, 788 flow [2023-12-05 21:13:45,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 372 transitions, 788 flow [2023-12-05 21:13:45,076 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:13:45,076 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;@1a4bc4ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:13:45,076 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 21:13:45,079 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:13:45,079 INFO L124 PetriNetUnfolderBase]: 1/40 cut-off events. [2023-12-05 21:13:45,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:13:45,079 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:45,079 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] [2023-12-05 21:13:45,079 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:13:45,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1849969433, now seen corresponding path program 1 times [2023-12-05 21:13:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005469381] [2023-12-05 21:13:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:45,107 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 21:13:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005469381] [2023-12-05 21:13:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005469381] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:13:45,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:13:45,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:13:45,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695911845] [2023-12-05 21:13:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:13:45,108 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:13:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:13:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:13:45,110 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 372 [2023-12-05 21:13:45,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 372 transitions, 788 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:45,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:45,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 372 [2023-12-05 21:13:45,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand