/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/weaver/chl-array-int-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:50:11,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:50:11,580 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 15:50:11,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:50:11,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:50:11,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:50:11,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:50:11,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:50:11,612 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:50:11,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:50:11,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:50:11,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:50:11,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:50:11,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:50:11,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:50:11,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:50:11,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:50:11,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:50:11,618 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:50:11,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:50:11,619 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:50:11,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:50:11,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:50:11,620 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:50:11,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:50:11,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:50:11,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:50:11,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:50:11,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:50:11,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:50:11,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:50:11,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:50:11,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:50:11,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:50:11,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:50:11,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:50:11,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:50:11,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:50:11,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-11-17 15:50:13,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:50:13,200 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:50:13,200 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-11-17 15:50:13,207 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beab9288f/df31ecbeac6a44d0b6562a32bced0a49/FLAGbe6a7e075 [2023-11-17 15:50:13,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beab9288f/df31ecbeac6a44d0b6562a32bced0a49 [2023-11-17 15:50:13,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:50:13,222 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:50:13,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:50:13,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:50:13,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:50:13,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8f7c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13, skipping insertion in model container [2023-11-17 15:50:13,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:50:13,415 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2767,2780] [2023-11-17 15:50:13,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:50:13,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:50:13,458 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c[2767,2780] [2023-11-17 15:50:13,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:50:13,475 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:50:13,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13 WrapperNode [2023-11-17 15:50:13,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:50:13,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:50:13,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:50:13,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:50:13,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,513 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 288 [2023-11-17 15:50:13,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:50:13,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:50:13,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:50:13,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:50:13,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:50:13,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:50:13,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:50:13,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:50:13,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (1/1) ... [2023-11-17 15:50:13,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:50:13,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:13,582 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 15:50:13,584 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 15:50:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:50:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:50:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:50:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:50:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:50:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:50:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:50:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:50:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 15:50:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 15:50:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:50:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:50:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:50:13,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:50:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:50:13,607 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 15:50:13,704 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:50:13,705 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:50:14,068 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:50:14,084 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:50:14,084 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 15:50:14,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:50:14 BoogieIcfgContainer [2023-11-17 15:50:14,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:50:14,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:50:14,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:50:14,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:50:14,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:50:13" (1/3) ... [2023-11-17 15:50:14,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ca1539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:50:14, skipping insertion in model container [2023-11-17 15:50:14,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:50:13" (2/3) ... [2023-11-17 15:50:14,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ca1539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:50:14, skipping insertion in model container [2023-11-17 15:50:14,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:50:14" (3/3) ... [2023-11-17 15:50:14,101 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-11-17 15:50:14,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:50:14,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:50:14,116 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:50:14,253 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:50:14,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 358 transitions, 737 flow [2023-11-17 15:50:14,448 INFO L124 PetriNetUnfolderBase]: 28/355 cut-off events. [2023-11-17 15:50:14,448 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:50:14,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 355 events. 28/355 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 595 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 276. Up to 3 conditions per place. [2023-11-17 15:50:14,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 358 transitions, 737 flow [2023-11-17 15:50:14,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 344 transitions, 706 flow [2023-11-17 15:50:14,474 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:50:14,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 344 transitions, 706 flow [2023-11-17 15:50:14,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 344 transitions, 706 flow [2023-11-17 15:50:14,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 344 transitions, 706 flow [2023-11-17 15:50:14,598 INFO L124 PetriNetUnfolderBase]: 28/344 cut-off events. [2023-11-17 15:50:14,599 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:50:14,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 344 events. 28/344 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 592 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 276. Up to 3 conditions per place. [2023-11-17 15:50:14,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 19278 [2023-11-17 15:50:23,586 INFO L134 LiptonReduction]: Checked pairs total: 20534 [2023-11-17 15:50:23,586 INFO L136 LiptonReduction]: Total number of compositions: 386 [2023-11-17 15:50:23,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:50:23,603 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;@32f317f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:50:23,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:50:23,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:50:23,610 INFO L124 PetriNetUnfolderBase]: 8/35 cut-off events. [2023-11-17 15:50:23,610 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 15:50:23,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:23,611 INFO L208 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] [2023-11-17 15:50:23,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:23,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 115527649, now seen corresponding path program 1 times [2023-11-17 15:50:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229801006] [2023-11-17 15:50:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:24,223 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 15:50:24,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229801006] [2023-11-17 15:50:24,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229801006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:24,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:24,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:50:24,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878021230] [2023-11-17 15:50:24,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:24,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:50:24,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:24,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:50:24,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:50:24,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 744 [2023-11-17 15:50:24,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 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 15:50:24,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:24,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 744 [2023-11-17 15:50:24,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:24,828 INFO L124 PetriNetUnfolderBase]: 2142/3111 cut-off events. [2023-11-17 15:50:24,828 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2023-11-17 15:50:24,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 3111 events. 2142/3111 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14457 event pairs, 174 based on Foata normal form. 1/2322 useless extension candidates. Maximal degree in co-relation 3980. Up to 1022 conditions per place. [2023-11-17 15:50:24,845 INFO L140 encePairwiseOnDemand]: 735/744 looper letters, 115 selfloop transitions, 13 changer transitions 3/132 dead transitions. [2023-11-17 15:50:24,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 132 transitions, 601 flow [2023-11-17 15:50:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:50:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:50:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2562 transitions. [2023-11-17 15:50:24,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826164874551971 [2023-11-17 15:50:24,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2562 transitions. [2023-11-17 15:50:24,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2562 transitions. [2023-11-17 15:50:24,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:24,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2562 transitions. [2023-11-17 15:50:24,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 284.6666666666667) internal successors, (2562), 9 states have internal predecessors, (2562), 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 15:50:24,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 744.0) internal successors, (7440), 10 states have internal predecessors, (7440), 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 15:50:24,895 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 744.0) internal successors, (7440), 10 states have internal predecessors, (7440), 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 15:50:24,897 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 9 states and 2562 transitions. [2023-11-17 15:50:24,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 132 transitions, 601 flow [2023-11-17 15:50:24,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 132 transitions, 551 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 15:50:24,905 INFO L231 Difference]: Finished difference. Result has 43 places, 49 transitions, 156 flow [2023-11-17 15:50:24,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=43, PETRI_TRANSITIONS=49} [2023-11-17 15:50:24,910 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-11-17 15:50:24,910 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 156 flow [2023-11-17 15:50:24,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 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 15:50:24,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:24,912 INFO L208 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] [2023-11-17 15:50:24,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:50:24,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:24,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 176967501, now seen corresponding path program 2 times [2023-11-17 15:50:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:24,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436200920] [2023-11-17 15:50:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:25,178 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 15:50:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:25,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436200920] [2023-11-17 15:50:25,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436200920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:25,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:50:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947834979] [2023-11-17 15:50:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:25,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:50:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:50:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:50:25,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 744 [2023-11-17 15:50:25,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 49 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 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 15:50:25,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:25,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 744 [2023-11-17 15:50:25,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:25,773 INFO L124 PetriNetUnfolderBase]: 2245/3291 cut-off events. [2023-11-17 15:50:25,773 INFO L125 PetriNetUnfolderBase]: For 489/489 co-relation queries the response was YES. [2023-11-17 15:50:25,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 3291 events. 2245/3291 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15587 event pairs, 236 based on Foata normal form. 1/2466 useless extension candidates. Maximal degree in co-relation 4813. Up to 1022 conditions per place. [2023-11-17 15:50:25,789 INFO L140 encePairwiseOnDemand]: 732/744 looper letters, 114 selfloop transitions, 19 changer transitions 3/137 dead transitions. [2023-11-17 15:50:25,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 137 transitions, 637 flow [2023-11-17 15:50:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:50:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:50:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3105 transitions. [2023-11-17 15:50:25,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37939882697947214 [2023-11-17 15:50:25,799 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3105 transitions. [2023-11-17 15:50:25,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3105 transitions. [2023-11-17 15:50:25,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:25,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3105 transitions. [2023-11-17 15:50:25,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 282.27272727272725) internal successors, (3105), 11 states have internal predecessors, (3105), 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 15:50:25,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 744.0) internal successors, (8928), 12 states have internal predecessors, (8928), 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 15:50:25,824 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 744.0) internal successors, (8928), 12 states have internal predecessors, (8928), 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 15:50:25,825 INFO L175 Difference]: Start difference. First operand has 43 places, 49 transitions, 156 flow. Second operand 11 states and 3105 transitions. [2023-11-17 15:50:25,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 137 transitions, 637 flow [2023-11-17 15:50:25,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 137 transitions, 635 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 15:50:25,831 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 250 flow [2023-11-17 15:50:25,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=250, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-11-17 15:50:25,832 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2023-11-17 15:50:25,832 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 250 flow [2023-11-17 15:50:25,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.14285714285717) internal successors, (1912), 7 states have internal predecessors, (1912), 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 15:50:25,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:25,834 INFO L208 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] [2023-11-17 15:50:25,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:50:25,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:25,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash -444220287, now seen corresponding path program 1 times [2023-11-17 15:50:25,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:25,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823197731] [2023-11-17 15:50:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:25,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:26,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:26,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823197731] [2023-11-17 15:50:26,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823197731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:26,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:26,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:50:26,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775304104] [2023-11-17 15:50:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:26,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:50:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:50:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:50:26,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 744 [2023-11-17 15:50:26,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 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 15:50:26,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:26,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 744 [2023-11-17 15:50:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:26,744 INFO L124 PetriNetUnfolderBase]: 4572/6700 cut-off events. [2023-11-17 15:50:26,744 INFO L125 PetriNetUnfolderBase]: For 3279/3279 co-relation queries the response was YES. [2023-11-17 15:50:26,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15751 conditions, 6700 events. 4572/6700 cut-off events. For 3279/3279 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 34664 event pairs, 1672 based on Foata normal form. 2/4984 useless extension candidates. Maximal degree in co-relation 11673. Up to 2826 conditions per place. [2023-11-17 15:50:26,777 INFO L140 encePairwiseOnDemand]: 735/744 looper letters, 116 selfloop transitions, 20 changer transitions 4/141 dead transitions. [2023-11-17 15:50:26,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 141 transitions, 823 flow [2023-11-17 15:50:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:50:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:50:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2028 transitions. [2023-11-17 15:50:26,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38940092165898615 [2023-11-17 15:50:26,784 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2028 transitions. [2023-11-17 15:50:26,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2028 transitions. [2023-11-17 15:50:26,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:26,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2028 transitions. [2023-11-17 15:50:26,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.7142857142857) internal successors, (2028), 7 states have internal predecessors, (2028), 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 15:50:26,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 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 15:50:26,799 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 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 15:50:26,799 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 250 flow. Second operand 7 states and 2028 transitions. [2023-11-17 15:50:26,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 141 transitions, 823 flow [2023-11-17 15:50:26,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 141 transitions, 796 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:26,810 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 413 flow [2023-11-17 15:50:26,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2023-11-17 15:50:26,812 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-17 15:50:26,812 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 413 flow [2023-11-17 15:50:26,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 279.6) internal successors, (1398), 5 states have internal predecessors, (1398), 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 15:50:26,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:26,812 INFO L208 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] [2023-11-17 15:50:26,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:50:26,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:26,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash -484603831, now seen corresponding path program 1 times [2023-11-17 15:50:26,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:26,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318568237] [2023-11-17 15:50:26,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:26,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:50:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:27,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318568237] [2023-11-17 15:50:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318568237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:27,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323681692] [2023-11-17 15:50:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:27,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:27,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:27,031 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 15:50:27,056 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 15:50:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:27,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:50:27,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:50:27,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:50:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323681692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:27,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:27,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 15:50:27,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65610270] [2023-11-17 15:50:27,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:50:27,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:50:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:50:27,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 744 [2023-11-17 15:50:27,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 413 flow. Second operand has 14 states, 14 states have (on average 277.64285714285717) internal successors, (3887), 14 states have internal predecessors, (3887), 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 15:50:27,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:27,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 744 [2023-11-17 15:50:27,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:28,938 INFO L124 PetriNetUnfolderBase]: 7782/11360 cut-off events. [2023-11-17 15:50:28,938 INFO L125 PetriNetUnfolderBase]: For 7824/7824 co-relation queries the response was YES. [2023-11-17 15:50:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28062 conditions, 11360 events. 7782/11360 cut-off events. For 7824/7824 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 63254 event pairs, 3774 based on Foata normal form. 4/8465 useless extension candidates. Maximal degree in co-relation 21594. Up to 2804 conditions per place. [2023-11-17 15:50:28,999 INFO L140 encePairwiseOnDemand]: 734/744 looper letters, 240 selfloop transitions, 35 changer transitions 24/300 dead transitions. [2023-11-17 15:50:28,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 300 transitions, 1815 flow [2023-11-17 15:50:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 15:50:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 15:50:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5759 transitions. [2023-11-17 15:50:29,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870295698924731 [2023-11-17 15:50:29,014 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5759 transitions. [2023-11-17 15:50:29,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5759 transitions. [2023-11-17 15:50:29,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:29,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5759 transitions. [2023-11-17 15:50:29,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 287.95) internal successors, (5759), 20 states have internal predecessors, (5759), 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 15:50:29,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 744.0) internal successors, (15624), 21 states have internal predecessors, (15624), 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 15:50:29,060 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 744.0) internal successors, (15624), 21 states have internal predecessors, (15624), 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 15:50:29,060 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 413 flow. Second operand 20 states and 5759 transitions. [2023-11-17 15:50:29,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 300 transitions, 1815 flow [2023-11-17 15:50:29,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 300 transitions, 1792 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-17 15:50:29,079 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 682 flow [2023-11-17 15:50:29,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=682, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2023-11-17 15:50:29,081 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 52 predicate places. [2023-11-17 15:50:29,081 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 682 flow [2023-11-17 15:50:29,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 277.64285714285717) internal successors, (3887), 14 states have internal predecessors, (3887), 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 15:50:29,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:29,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:29,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:29,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:29,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:29,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash -823701329, now seen corresponding path program 2 times [2023-11-17 15:50:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:29,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138880663] [2023-11-17 15:50:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:29,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:29,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:29,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138880663] [2023-11-17 15:50:29,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138880663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57094013] [2023-11-17 15:50:29,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:50:29,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:29,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:29,656 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 15:50:29,678 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 15:50:29,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:50:29,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:29,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:50:29,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:50:29,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57094013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2023-11-17 15:50:29,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7062343] [2023-11-17 15:50:29,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:50:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:50:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:50:29,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 744 [2023-11-17 15:50:29,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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 15:50:29,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:29,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 744 [2023-11-17 15:50:29,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:32,316 INFO L124 PetriNetUnfolderBase]: 14950/21928 cut-off events. [2023-11-17 15:50:32,316 INFO L125 PetriNetUnfolderBase]: For 15333/15381 co-relation queries the response was YES. [2023-11-17 15:50:32,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54638 conditions, 21928 events. 14950/21928 cut-off events. For 15333/15381 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 140549 event pairs, 2328 based on Foata normal form. 49/16292 useless extension candidates. Maximal degree in co-relation 48626. Up to 11482 conditions per place. [2023-11-17 15:50:32,497 INFO L140 encePairwiseOnDemand]: 735/744 looper letters, 137 selfloop transitions, 39 changer transitions 12/189 dead transitions. [2023-11-17 15:50:32,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 189 transitions, 1504 flow [2023-11-17 15:50:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:50:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:50:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2518 transitions. [2023-11-17 15:50:32,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230510752688172 [2023-11-17 15:50:32,617 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2518 transitions. [2023-11-17 15:50:32,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2518 transitions. [2023-11-17 15:50:32,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:32,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2518 transitions. [2023-11-17 15:50:32,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 314.75) internal successors, (2518), 8 states have internal predecessors, (2518), 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 15:50:32,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 744.0) internal successors, (6696), 9 states have internal predecessors, (6696), 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 15:50:32,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 744.0) internal successors, (6696), 9 states have internal predecessors, (6696), 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 15:50:32,631 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 682 flow. Second operand 8 states and 2518 transitions. [2023-11-17 15:50:32,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 189 transitions, 1504 flow [2023-11-17 15:50:32,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 189 transitions, 1459 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-11-17 15:50:32,678 INFO L231 Difference]: Finished difference. Result has 97 places, 113 transitions, 920 flow [2023-11-17 15:50:32,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=97, PETRI_TRANSITIONS=113} [2023-11-17 15:50:32,679 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 59 predicate places. [2023-11-17 15:50:32,679 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 113 transitions, 920 flow [2023-11-17 15:50:32,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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 15:50:32,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:32,680 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:32,689 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 15:50:32,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:32,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:32,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash 363096269, now seen corresponding path program 3 times [2023-11-17 15:50:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519809717] [2023-11-17 15:50:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:33,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519809717] [2023-11-17 15:50:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519809717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101595740] [2023-11-17 15:50:33,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:50:33,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:33,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:33,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:50:33,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:50:33,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:50:33,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:33,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:50:33,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:50:33,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:33,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101595740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:33,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:33,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2023-11-17 15:50:33,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457002788] [2023-11-17 15:50:33,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:33,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:50:33,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:50:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:50:33,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 744 [2023-11-17 15:50:33,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 113 transitions, 920 flow. Second operand has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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 15:50:33,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:33,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 744 [2023-11-17 15:50:33,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:35,636 INFO L124 PetriNetUnfolderBase]: 16620/24251 cut-off events. [2023-11-17 15:50:35,637 INFO L125 PetriNetUnfolderBase]: For 29294/29342 co-relation queries the response was YES. [2023-11-17 15:50:35,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66437 conditions, 24251 events. 16620/24251 cut-off events. For 29294/29342 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 157266 event pairs, 1816 based on Foata normal form. 49/19945 useless extension candidates. Maximal degree in co-relation 57755. Up to 11738 conditions per place. [2023-11-17 15:50:35,807 INFO L140 encePairwiseOnDemand]: 735/744 looper letters, 133 selfloop transitions, 52 changer transitions 9/195 dead transitions. [2023-11-17 15:50:35,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 195 transitions, 1659 flow [2023-11-17 15:50:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:50:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:50:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2526 transitions. [2023-11-17 15:50:35,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42439516129032256 [2023-11-17 15:50:35,814 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2526 transitions. [2023-11-17 15:50:35,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2526 transitions. [2023-11-17 15:50:35,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:35,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2526 transitions. [2023-11-17 15:50:35,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 315.75) internal successors, (2526), 8 states have internal predecessors, (2526), 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 15:50:35,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 744.0) internal successors, (6696), 9 states have internal predecessors, (6696), 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 15:50:35,828 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 744.0) internal successors, (6696), 9 states have internal predecessors, (6696), 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 15:50:35,828 INFO L175 Difference]: Start difference. First operand has 97 places, 113 transitions, 920 flow. Second operand 8 states and 2526 transitions. [2023-11-17 15:50:35,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 195 transitions, 1659 flow [2023-11-17 15:50:35,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 195 transitions, 1629 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 15:50:35,943 INFO L231 Difference]: Finished difference. Result has 105 places, 127 transitions, 1217 flow [2023-11-17 15:50:35,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1217, PETRI_PLACES=105, PETRI_TRANSITIONS=127} [2023-11-17 15:50:35,943 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2023-11-17 15:50:35,944 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 127 transitions, 1217 flow [2023-11-17 15:50:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 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 15:50:35,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:35,944 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:50:35,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-17 15:50:36,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:36,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:36,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1392347247, now seen corresponding path program 4 times [2023-11-17 15:50:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880988010] [2023-11-17 15:50:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:36,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:36,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:36,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880988010] [2023-11-17 15:50:36,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880988010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:36,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790436373] [2023-11-17 15:50:36,420 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:50:36,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:36,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:36,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:50:36,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:50:36,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:50:36,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:36,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:50:36,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:50:36,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:50:36,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790436373] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:36,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:50:36,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 20 [2023-11-17 15:50:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305928411] [2023-11-17 15:50:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:50:36,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 744 [2023-11-17 15:50:36,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 127 transitions, 1217 flow. Second operand has 8 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 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 15:50:36,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:36,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 744 [2023-11-17 15:50:36,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:39,188 INFO L124 PetriNetUnfolderBase]: 16147/23235 cut-off events. [2023-11-17 15:50:39,188 INFO L125 PetriNetUnfolderBase]: For 48751/48751 co-relation queries the response was YES. [2023-11-17 15:50:39,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69595 conditions, 23235 events. 16147/23235 cut-off events. For 48751/48751 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 145447 event pairs, 4289 based on Foata normal form. 148/19123 useless extension candidates. Maximal degree in co-relation 61716. Up to 6322 conditions per place. [2023-11-17 15:50:39,309 INFO L140 encePairwiseOnDemand]: 735/744 looper letters, 225 selfloop transitions, 25 changer transitions 10/261 dead transitions. [2023-11-17 15:50:39,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 261 transitions, 2382 flow [2023-11-17 15:50:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:50:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:50:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2601 transitions. [2023-11-17 15:50:39,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38844086021505375 [2023-11-17 15:50:39,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2601 transitions. [2023-11-17 15:50:39,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2601 transitions. [2023-11-17 15:50:39,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:39,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2601 transitions. [2023-11-17 15:50:39,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 289.0) internal successors, (2601), 9 states have internal predecessors, (2601), 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 15:50:39,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 744.0) internal successors, (7440), 10 states have internal predecessors, (7440), 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 15:50:39,332 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 744.0) internal successors, (7440), 10 states have internal predecessors, (7440), 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 15:50:39,333 INFO L175 Difference]: Start difference. First operand has 105 places, 127 transitions, 1217 flow. Second operand 9 states and 2601 transitions. [2023-11-17 15:50:39,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 261 transitions, 2382 flow [2023-11-17 15:50:39,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 261 transitions, 2306 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 15:50:39,511 INFO L231 Difference]: Finished difference. Result has 111 places, 135 transitions, 1260 flow [2023-11-17 15:50:39,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1260, PETRI_PLACES=111, PETRI_TRANSITIONS=135} [2023-11-17 15:50:39,512 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2023-11-17 15:50:39,512 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 135 transitions, 1260 flow [2023-11-17 15:50:39,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 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 15:50:39,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:39,513 INFO L208 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] [2023-11-17 15:50:39,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:39,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:39,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:39,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -961743586, now seen corresponding path program 1 times [2023-11-17 15:50:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:39,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900660416] [2023-11-17 15:50:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:39,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:39,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:39,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900660416] [2023-11-17 15:50:39,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900660416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:39,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:39,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:50:39,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910168142] [2023-11-17 15:50:39,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:39,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:50:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:50:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:50:39,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 744 [2023-11-17 15:50:39,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 135 transitions, 1260 flow. Second operand has 5 states, 5 states have (on average 282.2) internal successors, (1411), 5 states have internal predecessors, (1411), 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 15:50:39,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:39,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 744 [2023-11-17 15:50:39,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:41,528 INFO L124 PetriNetUnfolderBase]: 11455/16631 cut-off events. [2023-11-17 15:50:41,529 INFO L125 PetriNetUnfolderBase]: For 35841/35841 co-relation queries the response was YES. [2023-11-17 15:50:41,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50398 conditions, 16631 events. 11455/16631 cut-off events. For 35841/35841 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 96854 event pairs, 5793 based on Foata normal form. 0/14380 useless extension candidates. Maximal degree in co-relation 49845. Up to 10224 conditions per place. [2023-11-17 15:50:41,614 INFO L140 encePairwiseOnDemand]: 737/744 looper letters, 79 selfloop transitions, 6 changer transitions 93/178 dead transitions. [2023-11-17 15:50:41,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 178 transitions, 1772 flow [2023-11-17 15:50:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:50:41,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:50:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1743 transitions. [2023-11-17 15:50:41,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904569892473118 [2023-11-17 15:50:41,621 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1743 transitions. [2023-11-17 15:50:41,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1743 transitions. [2023-11-17 15:50:41,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:41,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1743 transitions. [2023-11-17 15:50:41,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.5) internal successors, (1743), 6 states have internal predecessors, (1743), 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 15:50:41,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 744.0) internal successors, (5208), 7 states have internal predecessors, (5208), 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 15:50:41,631 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 744.0) internal successors, (5208), 7 states have internal predecessors, (5208), 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 15:50:41,631 INFO L175 Difference]: Start difference. First operand has 111 places, 135 transitions, 1260 flow. Second operand 6 states and 1743 transitions. [2023-11-17 15:50:41,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 178 transitions, 1772 flow [2023-11-17 15:50:41,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 178 transitions, 1721 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-17 15:50:41,760 INFO L231 Difference]: Finished difference. Result has 110 places, 85 transitions, 687 flow [2023-11-17 15:50:41,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=110, PETRI_TRANSITIONS=85} [2023-11-17 15:50:41,760 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2023-11-17 15:50:41,760 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 85 transitions, 687 flow [2023-11-17 15:50:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.2) internal successors, (1411), 5 states have internal predecessors, (1411), 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 15:50:41,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:41,761 INFO L208 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] [2023-11-17 15:50:41,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:50:41,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:41,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2027022691, now seen corresponding path program 1 times [2023-11-17 15:50:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975749871] [2023-11-17 15:50:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:41,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975749871] [2023-11-17 15:50:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975749871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:50:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:50:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469721936] [2023-11-17 15:50:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:41,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:50:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:50:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:50:41,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 744 [2023-11-17 15:50:41,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 85 transitions, 687 flow. Second operand has 5 states, 5 states have (on average 282.2) internal successors, (1411), 5 states have internal predecessors, (1411), 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 15:50:41,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:41,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 744 [2023-11-17 15:50:41,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:42,459 INFO L124 PetriNetUnfolderBase]: 3665/5304 cut-off events. [2023-11-17 15:50:42,459 INFO L125 PetriNetUnfolderBase]: For 12216/12230 co-relation queries the response was YES. [2023-11-17 15:50:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16365 conditions, 5304 events. 3665/5304 cut-off events. For 12216/12230 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25400 event pairs, 2219 based on Foata normal form. 94/4735 useless extension candidates. Maximal degree in co-relation 16334. Up to 4769 conditions per place. [2023-11-17 15:50:42,485 INFO L140 encePairwiseOnDemand]: 739/744 looper letters, 55 selfloop transitions, 2 changer transitions 43/101 dead transitions. [2023-11-17 15:50:42,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 835 flow [2023-11-17 15:50:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:50:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:50:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1457 transitions. [2023-11-17 15:50:42,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2023-11-17 15:50:42,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1457 transitions. [2023-11-17 15:50:42,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1457 transitions. [2023-11-17 15:50:42,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:42,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1457 transitions. [2023-11-17 15:50:42,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 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 15:50:42,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 744.0) internal successors, (4464), 6 states have internal predecessors, (4464), 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 15:50:42,496 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 744.0) internal successors, (4464), 6 states have internal predecessors, (4464), 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 15:50:42,496 INFO L175 Difference]: Start difference. First operand has 110 places, 85 transitions, 687 flow. Second operand 5 states and 1457 transitions. [2023-11-17 15:50:42,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 835 flow [2023-11-17 15:50:42,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 712 flow, removed 26 selfloop flow, removed 16 redundant places. [2023-11-17 15:50:42,520 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 330 flow [2023-11-17 15:50:42,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2023-11-17 15:50:42,520 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-11-17 15:50:42,521 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 330 flow [2023-11-17 15:50:42,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.2) internal successors, (1411), 5 states have internal predecessors, (1411), 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 15:50:42,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:42,521 INFO L208 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] [2023-11-17 15:50:42,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:50:42,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:42,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:42,522 INFO L85 PathProgramCache]: Analyzing trace with hash 577658825, now seen corresponding path program 1 times [2023-11-17 15:50:42,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:42,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390442306] [2023-11-17 15:50:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:42,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:42,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390442306] [2023-11-17 15:50:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390442306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367152093] [2023-11-17 15:50:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:42,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:42,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:42,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:50:42,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:50:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:42,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 15:50:42,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:42,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:43,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:50:43,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 125 [2023-11-17 15:50:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367152093] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:43,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:50:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-11-17 15:50:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148357657] [2023-11-17 15:50:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:43,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-17 15:50:43,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 744 [2023-11-17 15:50:43,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 330 flow. Second operand has 8 states, 8 states have (on average 271.375) internal successors, (2171), 8 states have internal predecessors, (2171), 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 15:50:43,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:43,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 744 [2023-11-17 15:50:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:44,029 INFO L124 PetriNetUnfolderBase]: 6514/9397 cut-off events. [2023-11-17 15:50:44,029 INFO L125 PetriNetUnfolderBase]: For 12834/12834 co-relation queries the response was YES. [2023-11-17 15:50:44,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26652 conditions, 9397 events. 6514/9397 cut-off events. For 12834/12834 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 49920 event pairs, 3004 based on Foata normal form. 3/7990 useless extension candidates. Maximal degree in co-relation 26633. Up to 4767 conditions per place. [2023-11-17 15:50:44,056 INFO L140 encePairwiseOnDemand]: 736/744 looper letters, 52 selfloop transitions, 6 changer transitions 73/132 dead transitions. [2023-11-17 15:50:44,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 132 transitions, 1028 flow [2023-11-17 15:50:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:50:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:50:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1960 transitions. [2023-11-17 15:50:44,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2023-11-17 15:50:44,061 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1960 transitions. [2023-11-17 15:50:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1960 transitions. [2023-11-17 15:50:44,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:44,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1960 transitions. [2023-11-17 15:50:44,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 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 15:50:44,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 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 15:50:44,070 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 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 15:50:44,070 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 330 flow. Second operand 7 states and 1960 transitions. [2023-11-17 15:50:44,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 132 transitions, 1028 flow [2023-11-17 15:50:44,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 132 transitions, 938 flow, removed 33 selfloop flow, removed 7 redundant places. [2023-11-17 15:50:44,107 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 320 flow [2023-11-17 15:50:44,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-11-17 15:50:44,108 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-17 15:50:44,108 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 320 flow [2023-11-17 15:50:44,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 271.375) internal successors, (2171), 8 states have internal predecessors, (2171), 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 15:50:44,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:44,109 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-17 15:50:44,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 15:50:44,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:44,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash -436621854, now seen corresponding path program 1 times [2023-11-17 15:50:44,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:44,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143267305] [2023-11-17 15:50:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:50:44,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143267305] [2023-11-17 15:50:44,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143267305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420946670] [2023-11-17 15:50:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:44,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:50:44,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:50:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:44,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:50:44,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:50:44,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:50:44,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420946670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:50:44,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:50:44,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2023-11-17 15:50:44,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613595313] [2023-11-17 15:50:44,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:50:44,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 15:50:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 15:50:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:50:44,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 744 [2023-11-17 15:50:44,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 320 flow. Second operand has 19 states, 19 states have (on average 273.7894736842105) internal successors, (5202), 19 states have internal predecessors, (5202), 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 15:50:44,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:44,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 744 [2023-11-17 15:50:44,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:46,888 INFO L124 PetriNetUnfolderBase]: 12779/18502 cut-off events. [2023-11-17 15:50:46,888 INFO L125 PetriNetUnfolderBase]: For 14841/14841 co-relation queries the response was YES. [2023-11-17 15:50:46,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50364 conditions, 18502 events. 12779/18502 cut-off events. For 14841/14841 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 112572 event pairs, 608 based on Foata normal form. 7/16549 useless extension candidates. Maximal degree in co-relation 50346. Up to 2636 conditions per place. [2023-11-17 15:50:46,946 INFO L140 encePairwiseOnDemand]: 732/744 looper letters, 314 selfloop transitions, 81 changer transitions 19/415 dead transitions. [2023-11-17 15:50:46,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 415 transitions, 2577 flow [2023-11-17 15:50:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 15:50:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 15:50:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 9535 transitions. [2023-11-17 15:50:46,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769370651486401 [2023-11-17 15:50:46,959 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 9535 transitions. [2023-11-17 15:50:46,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 9535 transitions. [2023-11-17 15:50:46,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:46,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 9535 transitions. [2023-11-17 15:50:46,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 280.44117647058823) internal successors, (9535), 34 states have internal predecessors, (9535), 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 15:50:46,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 744.0) internal successors, (26040), 35 states have internal predecessors, (26040), 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 15:50:47,000 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 744.0) internal successors, (26040), 35 states have internal predecessors, (26040), 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 15:50:47,000 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 320 flow. Second operand 34 states and 9535 transitions. [2023-11-17 15:50:47,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 415 transitions, 2577 flow [2023-11-17 15:50:47,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 415 transitions, 2471 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-17 15:50:47,026 INFO L231 Difference]: Finished difference. Result has 109 places, 130 transitions, 1134 flow [2023-11-17 15:50:47,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1134, PETRI_PLACES=109, PETRI_TRANSITIONS=130} [2023-11-17 15:50:47,027 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2023-11-17 15:50:47,027 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 130 transitions, 1134 flow [2023-11-17 15:50:47,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 273.7894736842105) internal successors, (5202), 19 states have internal predecessors, (5202), 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 15:50:47,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:47,028 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-17 15:50:47,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:47,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:47,234 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:47,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1819308582, now seen corresponding path program 2 times [2023-11-17 15:50:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371125513] [2023-11-17 15:50:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:50:47,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:47,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371125513] [2023-11-17 15:50:47,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371125513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:47,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397626705] [2023-11-17 15:50:47,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:50:47,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:47,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:47,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:50:47,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:50:47,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:50:47,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:50:47,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:50:47,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:47,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:50:47,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 108 [2023-11-17 15:50:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 15:50:47,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:50:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397626705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:50:47,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:50:47,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2023-11-17 15:50:47,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304438948] [2023-11-17 15:50:47,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:50:47,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 744 [2023-11-17 15:50:47,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 130 transitions, 1134 flow. Second operand has 8 states, 8 states have (on average 296.375) internal successors, (2371), 8 states have internal predecessors, (2371), 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 15:50:47,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:47,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 744 [2023-11-17 15:50:47,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:51,682 INFO L124 PetriNetUnfolderBase]: 25233/35126 cut-off events. [2023-11-17 15:50:51,682 INFO L125 PetriNetUnfolderBase]: For 51633/51633 co-relation queries the response was YES. [2023-11-17 15:50:51,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98286 conditions, 35126 events. 25233/35126 cut-off events. For 51633/51633 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 209624 event pairs, 1974 based on Foata normal form. 2/28312 useless extension candidates. Maximal degree in co-relation 98256. Up to 8505 conditions per place. [2023-11-17 15:50:51,840 INFO L140 encePairwiseOnDemand]: 733/744 looper letters, 429 selfloop transitions, 134 changer transitions 34/597 dead transitions. [2023-11-17 15:50:51,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 597 transitions, 6301 flow [2023-11-17 15:50:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 15:50:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 15:50:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4605 transitions. [2023-11-17 15:50:51,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2023-11-17 15:50:51,844 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4605 transitions. [2023-11-17 15:50:51,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4605 transitions. [2023-11-17 15:50:51,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:51,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4605 transitions. [2023-11-17 15:50:51,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 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 15:50:51,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 744.0) internal successors, (11904), 16 states have internal predecessors, (11904), 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 15:50:51,858 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 744.0) internal successors, (11904), 16 states have internal predecessors, (11904), 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 15:50:51,858 INFO L175 Difference]: Start difference. First operand has 109 places, 130 transitions, 1134 flow. Second operand 15 states and 4605 transitions. [2023-11-17 15:50:51,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 597 transitions, 6301 flow [2023-11-17 15:50:52,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 597 transitions, 5942 flow, removed 174 selfloop flow, removed 3 redundant places. [2023-11-17 15:50:52,081 INFO L231 Difference]: Finished difference. Result has 129 places, 255 transitions, 2798 flow [2023-11-17 15:50:52,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2798, PETRI_PLACES=129, PETRI_TRANSITIONS=255} [2023-11-17 15:50:52,082 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2023-11-17 15:50:52,082 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 255 transitions, 2798 flow [2023-11-17 15:50:52,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 296.375) internal successors, (2371), 8 states have internal predecessors, (2371), 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 15:50:52,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:52,083 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-17 15:50:52,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:52,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:52,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:52,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -873347842, now seen corresponding path program 1 times [2023-11-17 15:50:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612056649] [2023-11-17 15:50:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:52,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612056649] [2023-11-17 15:50:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612056649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706171303] [2023-11-17 15:50:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:52,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:52,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:52,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:50:52,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:50:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:52,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 15:50:52,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:52,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:50:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706171303] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:50:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2023-11-17 15:50:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149093959] [2023-11-17 15:50:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:50:52,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:50:52,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:50:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:50:52,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:50:52,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 744 [2023-11-17 15:50:52,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 255 transitions, 2798 flow. Second operand has 8 states, 8 states have (on average 274.625) internal successors, (2197), 8 states have internal predecessors, (2197), 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 15:50:52,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:50:52,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 744 [2023-11-17 15:50:52,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:50:56,724 INFO L124 PetriNetUnfolderBase]: 26432/36588 cut-off events. [2023-11-17 15:50:56,724 INFO L125 PetriNetUnfolderBase]: For 110938/110938 co-relation queries the response was YES. [2023-11-17 15:50:56,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124054 conditions, 36588 events. 26432/36588 cut-off events. For 110938/110938 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 213541 event pairs, 7818 based on Foata normal form. 1504/38092 useless extension candidates. Maximal degree in co-relation 124014. Up to 26150 conditions per place. [2023-11-17 15:50:56,938 INFO L140 encePairwiseOnDemand]: 736/744 looper letters, 228 selfloop transitions, 63 changer transitions 0/291 dead transitions. [2023-11-17 15:50:56,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 291 transitions, 3730 flow [2023-11-17 15:50:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:50:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:50:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1956 transitions. [2023-11-17 15:50:56,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37557603686635943 [2023-11-17 15:50:56,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1956 transitions. [2023-11-17 15:50:56,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1956 transitions. [2023-11-17 15:50:56,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:50:56,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1956 transitions. [2023-11-17 15:50:56,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.42857142857144) internal successors, (1956), 7 states have internal predecessors, (1956), 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 15:50:56,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 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 15:50:56,947 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 744.0) internal successors, (5952), 8 states have internal predecessors, (5952), 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 15:50:56,947 INFO L175 Difference]: Start difference. First operand has 129 places, 255 transitions, 2798 flow. Second operand 7 states and 1956 transitions. [2023-11-17 15:50:56,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 291 transitions, 3730 flow [2023-11-17 15:50:57,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 291 transitions, 3550 flow, removed 86 selfloop flow, removed 6 redundant places. [2023-11-17 15:50:57,710 INFO L231 Difference]: Finished difference. Result has 127 places, 233 transitions, 2590 flow [2023-11-17 15:50:57,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2590, PETRI_PLACES=127, PETRI_TRANSITIONS=233} [2023-11-17 15:50:57,711 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2023-11-17 15:50:57,711 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 233 transitions, 2590 flow [2023-11-17 15:50:57,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.625) internal successors, (2197), 8 states have internal predecessors, (2197), 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 15:50:57,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:50:57,712 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-17 15:50:57,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:50:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 15:50:57,914 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:50:57,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:50:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 348124041, now seen corresponding path program 1 times [2023-11-17 15:50:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:50:57,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382736488] [2023-11-17 15:50:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:50:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:59,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:50:59,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:50:59,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382736488] [2023-11-17 15:50:59,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382736488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:50:59,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188123264] [2023-11-17 15:50:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:50:59,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:50:59,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:50:59,133 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:50:59,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:50:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:50:59,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-17 15:50:59,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:50:59,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-17 15:50:59,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2023-11-17 15:50:59,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2023-11-17 15:51:00,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:51:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:51:00,030 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 15:51:00,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 15:51:00,440 INFO L349 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-11-17 15:51:00,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 50 treesize of output 38 [2023-11-17 15:51:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:51:00,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:51:02,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:02,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 103 treesize of output 67 [2023-11-17 15:51:02,072 INFO L349 Elim1Store]: treesize reduction 4, result has 88.2 percent of original size [2023-11-17 15:51:02,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41067 treesize of output 38920 [2023-11-17 15:51:02,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:02,239 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 1323 treesize of output 1299 [2023-11-17 15:51:02,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:02,293 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 1275 treesize of output 1203 [2023-11-17 15:51:02,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:02,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 950 treesize of output 830 [2023-11-17 15:51:37,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:37,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 264 treesize of output 156 [2023-11-17 15:51:37,760 INFO L349 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2023-11-17 15:51:37,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17194 treesize of output 16280 [2023-11-17 15:51:38,234 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:38,235 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 4714 treesize of output 4450 [2023-11-17 15:51:38,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:38,367 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 4181 treesize of output 3693 [2023-11-17 15:51:38,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:51:38,508 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 3914 treesize of output 3794 [2023-11-17 15:55:14,899 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 101 [2023-11-17 15:55:14,899 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 15:55:14,901 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 15:55:14,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 15:55:15,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 15:55:15,102 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 77 more [2023-11-17 15:55:15,105 INFO L158 Benchmark]: Toolchain (without parser) took 301882.75ms. Allocated memory was 276.8MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 221.9MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 4.2GB. Max. memory is 8.0GB. [2023-11-17 15:55:15,105 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 191.9MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:55:15,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.78ms. Allocated memory is still 276.8MB. Free memory was 221.3MB in the beginning and 209.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 15:55:15,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.32ms. Allocated memory is still 276.8MB. Free memory was 209.3MB in the beginning and 206.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:55:15,105 INFO L158 Benchmark]: Boogie Preprocessor took 41.74ms. Allocated memory is still 276.8MB. Free memory was 206.7MB in the beginning and 204.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:55:15,105 INFO L158 Benchmark]: RCFGBuilder took 534.42ms. Allocated memory is still 276.8MB. Free memory was 204.6MB in the beginning and 177.8MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-11-17 15:55:15,106 INFO L158 Benchmark]: TraceAbstraction took 301009.01ms. Allocated memory was 276.8MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 176.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2023-11-17 15:55:15,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 191.9MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.78ms. Allocated memory is still 276.8MB. Free memory was 221.3MB in the beginning and 209.3MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.32ms. Allocated memory is still 276.8MB. Free memory was 209.3MB in the beginning and 206.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.74ms. Allocated memory is still 276.8MB. Free memory was 206.7MB in the beginning and 204.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 534.42ms. Allocated memory is still 276.8MB. Free memory was 204.6MB in the beginning and 177.8MB in the end (delta: 26.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 301009.01ms. Allocated memory was 276.8MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 176.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1s, 326 PlacesBefore, 38 PlacesAfterwards, 344 TransitionsBefore, 36 TransitionsAfterwards, 19278 CoEnabledTransitionPairs, 8 FixpointIterations, 148 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 46 ConcurrentYvCompositions, 20 ChoiceCompositions, 386 TotalNumberOfCompositions, 20534 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18864, independent: 18709, independent conditional: 0, independent unconditional: 18709, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14447, independent: 14390, independent conditional: 0, independent unconditional: 14390, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14447, independent: 14390, independent conditional: 0, independent unconditional: 14390, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18864, independent: 4319, independent conditional: 0, independent unconditional: 4319, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 14447, unknown conditional: 0, unknown unconditional: 14447] , Statistics on independence cache: Total cache size (in pairs): 254, Positive cache size: 240, Positive conditional cache size: 0, Positive unconditional cache size: 240, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...