/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 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 14:56:13,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 14:56:13,277 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-SemanticLbe.epf [2023-11-17 14:56:13,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 14:56:13,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 14:56:13,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 14:56:13,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 14:56:13,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 14:56:13,292 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 14:56:13,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 14:56:13,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 14:56:13,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 14:56:13,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 14:56:13,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 14:56:13,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 14:56:13,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 14:56:13,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 14:56:13,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 14:56:13,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 14:56:13,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 14:56:13,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 14:56:13,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 14:56:13,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 14:56:13,295 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 14:56:13,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 14:56:13,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:56:13,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 14:56:13,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 14:56:13,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 14:56:13,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 14:56:13,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 14:56:13,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 14:56:13,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 14:56:13,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 14:56:13,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 14:56:13,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 14:56:13,449 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 14:56:13,450 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 14:56:13,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i [2023-11-17 14:56:14,547 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 14:56:14,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 14:56:14,742 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i [2023-11-17 14:56:14,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d82825b/72b3cbecf2be4296a0e8af8773eab46d/FLAGe0f2ef3fe [2023-11-17 14:56:14,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d82825b/72b3cbecf2be4296a0e8af8773eab46d [2023-11-17 14:56:14,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 14:56:14,772 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 14:56:14,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 14:56:14,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 14:56:14,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 14:56:14,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:56:14" (1/1) ... [2023-11-17 14:56:14,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b657db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:14, skipping insertion in model container [2023-11-17 14:56:14,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:56:14" (1/1) ... [2023-11-17 14:56:14,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 14:56:15,161 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i[55202,55215] [2023-11-17 14:56:15,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:56:15,186 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 14:56:15,219 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i[55202,55215] [2023-11-17 14:56:15,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:56:15,305 INFO L206 MainTranslator]: Completed translation [2023-11-17 14:56:15,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15 WrapperNode [2023-11-17 14:56:15,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 14:56:15,308 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 14:56:15,308 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 14:56:15,308 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 14:56:15,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,355 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-17 14:56:15,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 14:56:15,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 14:56:15,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 14:56:15,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 14:56:15,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,372 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 14:56:15,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 14:56:15,404 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 14:56:15,404 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 14:56:15,405 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (1/1) ... [2023-11-17 14:56:15,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:56:15,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:15,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 14:56:15,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 14:56:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 14:56:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 14:56:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-17 14:56:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 14:56:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 14:56:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 14:56:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 14:56:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 14:56:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 14:56:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 14:56:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 14:56:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 14:56:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 14:56:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 14:56:15,474 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 14:56:15,577 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 14:56:15,579 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 14:56:15,677 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 14:56:15,685 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 14:56:15,685 INFO L307 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-17 14:56:15,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:56:15 BoogieIcfgContainer [2023-11-17 14:56:15,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 14:56:15,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 14:56:15,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 14:56:15,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 14:56:15,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:56:14" (1/3) ... [2023-11-17 14:56:15,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49933bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:56:15, skipping insertion in model container [2023-11-17 14:56:15,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:56:15" (2/3) ... [2023-11-17 14:56:15,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49933bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:56:15, skipping insertion in model container [2023-11-17 14:56:15,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:56:15" (3/3) ... [2023-11-17 14:56:15,692 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2023-11-17 14:56:15,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 14:56:15,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 14:56:15,704 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 14:56:15,770 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 14:56:15,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 91 transitions, 196 flow [2023-11-17 14:56:15,830 INFO L124 PetriNetUnfolderBase]: 5/89 cut-off events. [2023-11-17 14:56:15,831 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 14:56:15,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-17 14:56:15,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 91 transitions, 196 flow [2023-11-17 14:56:15,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 74 transitions, 160 flow [2023-11-17 14:56:15,846 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 14:56:15,854 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 74 transitions, 160 flow [2023-11-17 14:56:15,859 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 74 transitions, 160 flow [2023-11-17 14:56:15,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 74 transitions, 160 flow [2023-11-17 14:56:15,875 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2023-11-17 14:56:15,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 14:56:15,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 4/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-17 14:56:15,876 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2023-11-17 14:56:18,149 INFO L134 LiptonReduction]: Checked pairs total: 192 [2023-11-17 14:56:18,150 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-17 14:56:18,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 14:56:18,165 INFO L357 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=false, 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;@2733041, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 14:56:18,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 14:56:18,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 14:56:18,168 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-11-17 14:56:18,169 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 14:56:18,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:18,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:18,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:18,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2017670719, now seen corresponding path program 1 times [2023-11-17 14:56:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:18,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283526855] [2023-11-17 14:56:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283526855] [2023-11-17 14:56:18,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283526855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:56:18,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:56:18,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 14:56:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759414578] [2023-11-17 14:56:18,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:56:18,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:56:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:56:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:56:18,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 161 [2023-11-17 14:56:18,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:18,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 161 [2023-11-17 14:56:18,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:18,418 INFO L124 PetriNetUnfolderBase]: 5/20 cut-off events. [2023-11-17 14:56:18,419 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 14:56:18,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-11-17 14:56:18,420 INFO L140 encePairwiseOnDemand]: 159/161 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-11-17 14:56:18,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-11-17 14:56:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:56:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:56:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-17 14:56:18,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2023-11-17 14:56:18,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-17 14:56:18,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-17 14:56:18,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:18,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-17 14:56:18,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,446 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 246 transitions. [2023-11-17 14:56:18,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-11-17 14:56:18,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 14:56:18,448 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-11-17 14:56:18,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-11-17 14:56:18,452 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-11-17 14:56:18,452 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-11-17 14:56:18,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:18,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:18,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 14:56:18,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:18,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1873383557, now seen corresponding path program 1 times [2023-11-17 14:56:18,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:18,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315533567] [2023-11-17 14:56:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:18,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315533567] [2023-11-17 14:56:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315533567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:56:18,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:56:18,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 14:56:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966827690] [2023-11-17 14:56:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:56:18,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 14:56:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 14:56:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 14:56:18,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 161 [2023-11-17 14:56:18,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:18,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 161 [2023-11-17 14:56:18,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:18,720 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-11-17 14:56:18,720 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 14:56:18,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 2 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2023-11-17 14:56:18,721 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 13 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-11-17 14:56:18,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 78 flow [2023-11-17 14:56:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 14:56:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 14:56:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2023-11-17 14:56:18,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358695652173913 [2023-11-17 14:56:18,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 231 transitions. [2023-11-17 14:56:18,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 231 transitions. [2023-11-17 14:56:18,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:18,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 231 transitions. [2023-11-17 14:56:18,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,730 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 4 states and 231 transitions. [2023-11-17 14:56:18,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 78 flow [2023-11-17 14:56:18,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 14:56:18,731 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 60 flow [2023-11-17 14:56:18,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-17 14:56:18,732 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-11-17 14:56:18,732 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 60 flow [2023-11-17 14:56:18,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:18,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:18,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:18,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 14:56:18,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:18,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash -292157688, now seen corresponding path program 1 times [2023-11-17 14:56:18,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:18,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491640838] [2023-11-17 14:56:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:18,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:19,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491640838] [2023-11-17 14:56:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491640838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 14:56:19,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644790021] [2023-11-17 14:56:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:19,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:19,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 14:56:19,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 14:56:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:19,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-17 14:56:19,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 14:56:19,212 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 14:56:19,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 14:56:19,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 14:56:19,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 14:56:19,351 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-17 14:56:19,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-17 14:56:19,391 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 14:56:19,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-17 14:56:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:19,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 14:56:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:19,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644790021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 14:56:19,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 14:56:19,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-11-17 14:56:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417442554] [2023-11-17 14:56:19,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 14:56:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 14:56:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 14:56:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-11-17 14:56:19,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 161 [2023-11-17 14:56:19,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 60 flow. Second operand has 18 states, 18 states have (on average 44.05555555555556) internal successors, (793), 18 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:19,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:19,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 161 [2023-11-17 14:56:19,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:19,788 INFO L124 PetriNetUnfolderBase]: 15/43 cut-off events. [2023-11-17 14:56:19,788 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-17 14:56:19,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 43 events. 15/43 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 1 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 111. Up to 14 conditions per place. [2023-11-17 14:56:19,789 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 17 selfloop transitions, 8 changer transitions 3/28 dead transitions. [2023-11-17 14:56:19,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 156 flow [2023-11-17 14:56:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 14:56:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 14:56:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 366 transitions. [2023-11-17 14:56:19,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2841614906832298 [2023-11-17 14:56:19,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 366 transitions. [2023-11-17 14:56:19,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 366 transitions. [2023-11-17 14:56:19,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:19,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 366 transitions. [2023-11-17 14:56:19,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.75) internal successors, (366), 8 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:19,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:19,794 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:19,794 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 60 flow. Second operand 8 states and 366 transitions. [2023-11-17 14:56:19,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 156 flow [2023-11-17 14:56:19,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 154 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 14:56:19,795 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 104 flow [2023-11-17 14:56:19,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=104, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-11-17 14:56:19,796 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2023-11-17 14:56:19,796 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 104 flow [2023-11-17 14:56:19,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 44.05555555555556) internal successors, (793), 18 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:19,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:56:19,796 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:56:19,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 14:56:20,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:20,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 14:56:20,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:56:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 379808197, now seen corresponding path program 2 times [2023-11-17 14:56:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:56:20,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841791872] [2023-11-17 14:56:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:56:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:56:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:56:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:20,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:56:20,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841791872] [2023-11-17 14:56:20,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841791872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 14:56:20,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576341223] [2023-11-17 14:56:20,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 14:56:20,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 14:56:20,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:56:20,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 14:56:20,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 14:56:20,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 14:56:20,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 14:56:20,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-17 14:56:20,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 14:56:20,479 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-17 14:56:20,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 14:56:20,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 14:56:20,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 14:56:20,579 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-17 14:56:20,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-17 14:56:20,626 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 14:56:20,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-17 14:56:20,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 14:56:20,674 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 14:56:20,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-17 14:56:20,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 14:56:20,720 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 14:56:20,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-17 14:56:20,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 14:56:20,766 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 14:56:20,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-17 14:56:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:20,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 14:56:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 4 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 14:56:54,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576341223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 14:56:54,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 14:56:54,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 26 [2023-11-17 14:56:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182674322] [2023-11-17 14:56:54,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 14:56:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 14:56:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:56:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 14:56:54,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=580, Unknown=13, NotChecked=0, Total=702 [2023-11-17 14:56:54,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 161 [2023-11-17 14:56:54,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 104 flow. Second operand has 27 states, 27 states have (on average 42.666666666666664) internal successors, (1152), 27 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:54,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:56:54,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 161 [2023-11-17 14:56:54,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:56:55,247 INFO L124 PetriNetUnfolderBase]: 10/34 cut-off events. [2023-11-17 14:56:55,247 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-17 14:56:55,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 34 events. 10/34 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 26 event pairs, 1 based on Foata normal form. 3/37 useless extension candidates. Maximal degree in co-relation 105. Up to 12 conditions per place. [2023-11-17 14:56:55,248 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-11-17 14:56:55,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 153 flow [2023-11-17 14:56:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 14:56:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 14:56:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 436 transitions. [2023-11-17 14:56:55,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2708074534161491 [2023-11-17 14:56:55,250 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 436 transitions. [2023-11-17 14:56:55,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 436 transitions. [2023-11-17 14:56:55,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:56:55,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 436 transitions. [2023-11-17 14:56:55,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.6) internal successors, (436), 10 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:55,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:55,253 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:55,253 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 104 flow. Second operand 10 states and 436 transitions. [2023-11-17 14:56:55,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 153 flow [2023-11-17 14:56:55,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 24 transitions, 127 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 14:56:55,256 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-11-17 14:56:55,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-11-17 14:56:55,257 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 16 predicate places. [2023-11-17 14:56:55,257 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-11-17 14:56:55,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 42.666666666666664) internal successors, (1152), 27 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 14:56:55,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 14:56:55,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 14:56:55,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 14:56:55,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 14:56:55,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 14:56:55,470 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-17 14:56:55,473 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 14:56:55,473 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 14:56:55,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 02:56:55 BasicIcfg [2023-11-17 14:56:55,475 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 14:56:55,476 INFO L158 Benchmark]: Toolchain (without parser) took 40704.68ms. Allocated memory was 213.9MB in the beginning and 308.3MB in the end (delta: 94.4MB). Free memory was 153.2MB in the beginning and 262.1MB in the end (delta: -108.9MB). Peak memory consumption was 157.8MB. Max. memory is 8.0GB. [2023-11-17 14:56:55,476 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 213.9MB. Free memory was 163.4MB in the beginning and 163.3MB in the end (delta: 66.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 14:56:55,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.76ms. Allocated memory is still 213.9MB. Free memory was 152.8MB in the beginning and 177.5MB in the end (delta: -24.6MB). Peak memory consumption was 38.5MB. Max. memory is 8.0GB. [2023-11-17 14:56:55,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.78ms. Allocated memory is still 213.9MB. Free memory was 177.4MB in the beginning and 175.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 14:56:55,477 INFO L158 Benchmark]: Boogie Preprocessor took 47.90ms. Allocated memory was 213.9MB in the beginning and 256.9MB in the end (delta: 43.0MB). Free memory was 175.0MB in the beginning and 222.8MB in the end (delta: -47.8MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. [2023-11-17 14:56:55,477 INFO L158 Benchmark]: RCFGBuilder took 282.05ms. Allocated memory is still 256.9MB. Free memory was 222.8MB in the beginning and 208.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 14:56:55,478 INFO L158 Benchmark]: TraceAbstraction took 39787.08ms. Allocated memory was 256.9MB in the beginning and 308.3MB in the end (delta: 51.4MB). Free memory was 207.6MB in the beginning and 262.1MB in the end (delta: -54.5MB). Peak memory consumption was 168.9MB. Max. memory is 8.0GB. [2023-11-17 14:56:55,479 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 213.9MB. Free memory was 163.4MB in the beginning and 163.3MB in the end (delta: 66.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 534.76ms. Allocated memory is still 213.9MB. Free memory was 152.8MB in the beginning and 177.5MB in the end (delta: -24.6MB). Peak memory consumption was 38.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.78ms. Allocated memory is still 213.9MB. Free memory was 177.4MB in the beginning and 175.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.90ms. Allocated memory was 213.9MB in the beginning and 256.9MB in the end (delta: 43.0MB). Free memory was 175.0MB in the beginning and 222.8MB in the end (delta: -47.8MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. * RCFGBuilder took 282.05ms. Allocated memory is still 256.9MB. Free memory was 222.8MB in the beginning and 208.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 39787.08ms. Allocated memory was 256.9MB in the beginning and 308.3MB in the end (delta: 51.4MB). Free memory was 207.6MB in the beginning and 262.1MB in the end (delta: -54.5MB). Peak memory consumption was 168.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 77 PlacesBefore, 19 PlacesAfterwards, 74 TransitionsBefore, 14 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 192 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 174, independent: 163, independent conditional: 0, independent unconditional: 163, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 130, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 130, independent: 122, independent conditional: 0, independent unconditional: 122, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 174, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 130, unknown conditional: 0, unknown unconditional: 130] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.7s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391 IncrementalHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 0 mSDtfsCounter, 391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 34.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 35.7s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 102 ConstructedInterpolants, 10 QuantifiedInterpolants, 1563 SizeOfPredicates, 14 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 14:56:55,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...