/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-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:54:31,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:54:31,620 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 15:54:31,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:54:31,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:54:31,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:54:31,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:54:31,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:54:31,655 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:54:31,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:54:31,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:54:31,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:54:31,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:54:31,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:54:31,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:54:31,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:54:31,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:54:31,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:54:31,661 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:54:31,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:54:31,662 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:54:31,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:54:31,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:54:31,663 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:54:31,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:54:31,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:54:31,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:54:31,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:54:31,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:54:31,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:54:31,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:54:31,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:54:31,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:54:31,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:54:31,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:54:31,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:54:31,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:54:31,910 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:54:31,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-11-17 15:54:33,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:54:33,244 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:54:33,245 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-11-17 15:54:33,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f350cdae/b7fd5f8a92d441a5929603a168ad2a6a/FLAG4fc342440 [2023-11-17 15:54:33,263 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f350cdae/b7fd5f8a92d441a5929603a168ad2a6a [2023-11-17 15:54:33,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:54:33,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:54:33,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:54:33,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:54:33,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:54:33,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c060044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33, skipping insertion in model container [2023-11-17 15:54:33,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:54:33,438 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-nzb-file-symm.wvr.c[4955,4968] [2023-11-17 15:54:33,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:54:33,455 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:54:33,496 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-nzb-file-symm.wvr.c[4955,4968] [2023-11-17 15:54:33,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:54:33,513 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:54:33,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33 WrapperNode [2023-11-17 15:54:33,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:54:33,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:54:33,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:54:33,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:54:33,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,579 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 409 [2023-11-17 15:54:33,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:54:33,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:54:33,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:54:33,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:54:33,590 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,595 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:54:33,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:54:33,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:54:33,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:54:33,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (1/1) ... [2023-11-17 15:54:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:54:33,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:33,646 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 15:54:33,673 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 15:54:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:54:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:54:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:54:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:54:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:54:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:54:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:54:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:54:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:54:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:54:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:54:33,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:54:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:54:33,681 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 15:54:33,838 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:54:33,840 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:54:34,505 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:54:34,527 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:54:34,527 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 15:54:34,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:54:34 BoogieIcfgContainer [2023-11-17 15:54:34,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:54:34,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:54:34,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:54:34,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:54:34,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:54:33" (1/3) ... [2023-11-17 15:54:34,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44842590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:54:34, skipping insertion in model container [2023-11-17 15:54:34,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:33" (2/3) ... [2023-11-17 15:54:34,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44842590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:54:34, skipping insertion in model container [2023-11-17 15:54:34,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:54:34" (3/3) ... [2023-11-17 15:54:34,536 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-11-17 15:54:34,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:54:34,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:54:34,551 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:54:34,656 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:54:34,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 534 transitions, 1082 flow [2023-11-17 15:54:34,922 INFO L124 PetriNetUnfolderBase]: 49/532 cut-off events. [2023-11-17 15:54:34,923 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:54:34,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 532 events. 49/532 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1533 event pairs, 0 based on Foata normal form. 0/482 useless extension candidates. Maximal degree in co-relation 359. Up to 2 conditions per place. [2023-11-17 15:54:34,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 492 places, 534 transitions, 1082 flow [2023-11-17 15:54:34,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 481 places, 523 transitions, 1058 flow [2023-11-17 15:54:34,953 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:54:34,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 481 places, 523 transitions, 1058 flow [2023-11-17 15:54:34,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 481 places, 523 transitions, 1058 flow [2023-11-17 15:54:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 481 places, 523 transitions, 1058 flow [2023-11-17 15:54:35,076 INFO L124 PetriNetUnfolderBase]: 49/523 cut-off events. [2023-11-17 15:54:35,076 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:54:35,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 523 events. 49/523 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1515 event pairs, 0 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 359. Up to 2 conditions per place. [2023-11-17 15:54:35,110 INFO L119 LiptonReduction]: Number of co-enabled transitions 65772 [2023-11-17 15:54:53,634 INFO L134 LiptonReduction]: Checked pairs total: 60404 [2023-11-17 15:54:53,634 INFO L136 LiptonReduction]: Total number of compositions: 677 [2023-11-17 15:54:53,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:54:53,677 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;@4582ec72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:54:53,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:54:53,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:54:53,686 INFO L124 PetriNetUnfolderBase]: 7/28 cut-off events. [2023-11-17 15:54:53,686 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:54:53,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:53,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:53,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:53,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:53,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1312617923, now seen corresponding path program 1 times [2023-11-17 15:54:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988461037] [2023-11-17 15:54:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:54,061 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 15:54:54,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988461037] [2023-11-17 15:54:54,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988461037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:54,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:54:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427298088] [2023-11-17 15:54:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:54,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:54:54,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:54:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:54:54,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1211 [2023-11-17 15:54:54,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 484.3333333333333) internal successors, (1453), 3 states have internal predecessors, (1453), 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 15:54:54,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:54,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1211 [2023-11-17 15:54:54,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:54,235 INFO L124 PetriNetUnfolderBase]: 157/250 cut-off events. [2023-11-17 15:54:54,235 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-17 15:54:54,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 157/250 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 640 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 472. Up to 249 conditions per place. [2023-11-17 15:54:54,238 INFO L140 encePairwiseOnDemand]: 1206/1211 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-11-17 15:54:54,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2023-11-17 15:54:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:54:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:54:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1473 transitions. [2023-11-17 15:54:54,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40545004128819156 [2023-11-17 15:54:54,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1473 transitions. [2023-11-17 15:54:54,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1473 transitions. [2023-11-17 15:54:54,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:54,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1473 transitions. [2023-11-17 15:54:54,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 491.0) internal successors, (1473), 3 states have internal predecessors, (1473), 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 15:54:54,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:54,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:54,288 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 1473 transitions. [2023-11-17 15:54:54,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2023-11-17 15:54:54,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:54:54,293 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2023-11-17 15:54:54,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=31} [2023-11-17 15:54:54,297 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-11-17 15:54:54,298 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2023-11-17 15:54:54,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 484.3333333333333) internal successors, (1453), 3 states have internal predecessors, (1453), 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 15:54:54,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:54,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:54:54,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:54,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1386370095, now seen corresponding path program 1 times [2023-11-17 15:54:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:54,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965127107] [2023-11-17 15:54:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:54,440 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 15:54:54,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:54,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965127107] [2023-11-17 15:54:54,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965127107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:54,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919972487] [2023-11-17 15:54:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:54,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:54,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:54,449 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 15:54:54,482 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 15:54:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:54,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:54:54,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:54,650 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 15:54:54,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:54:54,668 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 15:54:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919972487] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:54:54,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:54:54,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-17 15:54:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098145662] [2023-11-17 15:54:54,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:54:54,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:54:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:54:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:54:54,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1211 [2023-11-17 15:54:54,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 482.625) internal successors, (3861), 8 states have internal predecessors, (3861), 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 15:54:54,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:54,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1211 [2023-11-17 15:54:54,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:54,814 INFO L124 PetriNetUnfolderBase]: 157/256 cut-off events. [2023-11-17 15:54:54,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:54:54,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 256 events. 157/256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 637 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 512. Up to 249 conditions per place. [2023-11-17 15:54:54,816 INFO L140 encePairwiseOnDemand]: 1206/1211 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-11-17 15:54:54,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2023-11-17 15:54:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:54:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:54:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2923 transitions. [2023-11-17 15:54:54,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022846132672722 [2023-11-17 15:54:54,824 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2923 transitions. [2023-11-17 15:54:54,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2923 transitions. [2023-11-17 15:54:54,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:54,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2923 transitions. [2023-11-17 15:54:54,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 487.1666666666667) internal successors, (2923), 6 states have internal predecessors, (2923), 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 15:54:54,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1211.0) internal successors, (8477), 7 states have internal predecessors, (8477), 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 15:54:54,846 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1211.0) internal successors, (8477), 7 states have internal predecessors, (8477), 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 15:54:54,846 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 2923 transitions. [2023-11-17 15:54:54,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2023-11-17 15:54:54,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:54,850 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2023-11-17 15:54:54,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2023-11-17 15:54:54,854 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-11-17 15:54:54,854 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2023-11-17 15:54:54,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 482.625) internal successors, (3861), 8 states have internal predecessors, (3861), 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 15:54:54,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:54,857 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:54,865 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 15:54:55,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:55,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:55,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash -36876971, now seen corresponding path program 2 times [2023-11-17 15:54:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:55,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261546083] [2023-11-17 15:54:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:54:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:55,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261546083] [2023-11-17 15:54:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261546083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:55,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898098283] [2023-11-17 15:54:55,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:54:55,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:55,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:55,235 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 15:54:55,258 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 15:54:55,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:54:55,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:54:55,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:54:55,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 15:54:55,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:54:55,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898098283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:55,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:54:55,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-17 15:54:55,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025633488] [2023-11-17 15:54:55,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:55,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:54:55,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:54:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:54:55,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1211 [2023-11-17 15:54:55,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 468.75) internal successors, (1875), 4 states have internal predecessors, (1875), 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 15:54:55,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:55,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1211 [2023-11-17 15:54:55,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:56,069 INFO L124 PetriNetUnfolderBase]: 165/285 cut-off events. [2023-11-17 15:54:56,069 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:54:56,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 285 events. 165/285 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 843 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 249 conditions per place. [2023-11-17 15:54:56,071 INFO L140 encePairwiseOnDemand]: 1207/1211 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2023-11-17 15:54:56,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2023-11-17 15:54:56,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:54:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:54:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1905 transitions. [2023-11-17 15:54:56,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39327002477291495 [2023-11-17 15:54:56,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1905 transitions. [2023-11-17 15:54:56,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1905 transitions. [2023-11-17 15:54:56,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:56,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1905 transitions. [2023-11-17 15:54:56,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 476.25) internal successors, (1905), 4 states have internal predecessors, (1905), 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 15:54:56,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1211.0) internal successors, (6055), 5 states have internal predecessors, (6055), 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 15:54:56,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1211.0) internal successors, (6055), 5 states have internal predecessors, (6055), 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 15:54:56,092 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 1905 transitions. [2023-11-17 15:54:56,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2023-11-17 15:54:56,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:56,097 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2023-11-17 15:54:56,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-11-17 15:54:56,098 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-11-17 15:54:56,098 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 139 flow [2023-11-17 15:54:56,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 468.75) internal successors, (1875), 4 states have internal predecessors, (1875), 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 15:54:56,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:56,100 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:56,105 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 15:54:56,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-17 15:54:56,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:56,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:56,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2065327171, now seen corresponding path program 3 times [2023-11-17 15:54:56,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566483571] [2023-11-17 15:54:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:56,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:54:56,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:56,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566483571] [2023-11-17 15:54:56,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566483571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:56,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871950489] [2023-11-17 15:54:56,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:54:56,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:56,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:56,473 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 15:54:56,494 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 15:54:56,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:54:56,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:54:56,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:54:56,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 15:54:56,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:54:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871950489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:56,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:54:56,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-17 15:54:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401901542] [2023-11-17 15:54:56,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:56,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:54:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:56,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:54:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:54:56,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1211 [2023-11-17 15:54:56,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 468.75) internal successors, (1875), 4 states have internal predecessors, (1875), 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 15:54:56,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:56,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1211 [2023-11-17 15:54:56,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:57,085 INFO L124 PetriNetUnfolderBase]: 173/317 cut-off events. [2023-11-17 15:54:57,085 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-17 15:54:57,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 317 events. 173/317 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1074 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 720. Up to 256 conditions per place. [2023-11-17 15:54:57,087 INFO L140 encePairwiseOnDemand]: 1207/1211 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2023-11-17 15:54:57,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2023-11-17 15:54:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:54:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:54:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1911 transitions. [2023-11-17 15:54:57,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945086705202312 [2023-11-17 15:54:57,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1911 transitions. [2023-11-17 15:54:57,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1911 transitions. [2023-11-17 15:54:57,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:57,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1911 transitions. [2023-11-17 15:54:57,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 477.75) internal successors, (1911), 4 states have internal predecessors, (1911), 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 15:54:57,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1211.0) internal successors, (6055), 5 states have internal predecessors, (6055), 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 15:54:57,105 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1211.0) internal successors, (6055), 5 states have internal predecessors, (6055), 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 15:54:57,105 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 139 flow. Second operand 4 states and 1911 transitions. [2023-11-17 15:54:57,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2023-11-17 15:54:57,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 15:54:57,108 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2023-11-17 15:54:57,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-17 15:54:57,109 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-17 15:54:57,109 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 145 flow [2023-11-17 15:54:57,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 468.75) internal successors, (1875), 4 states have internal predecessors, (1875), 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 15:54:57,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:57,110 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:57,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:54:57,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:57,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:57,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2115875563, now seen corresponding path program 1 times [2023-11-17 15:54:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:57,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782350318] [2023-11-17 15:54:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:57,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-17 15:54:57,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:57,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782350318] [2023-11-17 15:54:57,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782350318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:57,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:57,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:54:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096314394] [2023-11-17 15:54:57,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:54:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:54:57,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:54:57,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 1211 [2023-11-17 15:54:57,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 493.3333333333333) internal successors, (1480), 3 states have internal predecessors, (1480), 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 15:54:57,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:57,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 1211 [2023-11-17 15:54:57,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:57,522 INFO L124 PetriNetUnfolderBase]: 131/238 cut-off events. [2023-11-17 15:54:57,522 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-17 15:54:57,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 238 events. 131/238 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 664 event pairs, 40 based on Foata normal form. 24/223 useless extension candidates. Maximal degree in co-relation 554. Up to 209 conditions per place. [2023-11-17 15:54:57,524 INFO L140 encePairwiseOnDemand]: 1207/1211 looper letters, 38 selfloop transitions, 2 changer transitions 4/44 dead transitions. [2023-11-17 15:54:57,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 253 flow [2023-11-17 15:54:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:54:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:54:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1502 transitions. [2023-11-17 15:54:57,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134324249931186 [2023-11-17 15:54:57,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1502 transitions. [2023-11-17 15:54:57,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1502 transitions. [2023-11-17 15:54:57,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:57,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1502 transitions. [2023-11-17 15:54:57,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 500.6666666666667) internal successors, (1502), 3 states have internal predecessors, (1502), 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 15:54:57,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:57,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:57,537 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 145 flow. Second operand 3 states and 1502 transitions. [2023-11-17 15:54:57,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 253 flow [2023-11-17 15:54:57,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 250 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:54:57,539 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 148 flow [2023-11-17 15:54:57,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-17 15:54:57,540 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-17 15:54:57,540 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 148 flow [2023-11-17 15:54:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.3333333333333) internal successors, (1480), 3 states have internal predecessors, (1480), 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 15:54:57,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:57,541 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:57,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:54:57,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:57,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:57,542 INFO L85 PathProgramCache]: Analyzing trace with hash -141681732, now seen corresponding path program 1 times [2023-11-17 15:54:57,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:57,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480543092] [2023-11-17 15:54:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:54:57,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:57,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480543092] [2023-11-17 15:54:57,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480543092] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:57,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119078096] [2023-11-17 15:54:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:57,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:57,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:57,693 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 15:54:57,720 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 15:54:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:57,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:54:57,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:54:57,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:54:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:54:57,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119078096] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:54:57,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:54:57,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-17 15:54:57,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267724412] [2023-11-17 15:54:57,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:54:57,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:54:57,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:57,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:54:57,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:54:57,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1211 [2023-11-17 15:54:57,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 148 flow. Second operand has 17 states, 17 states have (on average 481.88235294117646) internal successors, (8192), 17 states have internal predecessors, (8192), 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 15:54:57,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:57,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1211 [2023-11-17 15:54:57,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:58,163 INFO L124 PetriNetUnfolderBase]: 127/228 cut-off events. [2023-11-17 15:54:58,163 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-17 15:54:58,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 228 events. 127/228 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 599 event pairs, 83 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 509. Up to 219 conditions per place. [2023-11-17 15:54:58,164 INFO L140 encePairwiseOnDemand]: 1206/1211 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2023-11-17 15:54:58,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 238 flow [2023-11-17 15:54:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:54:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:54:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3399 transitions. [2023-11-17 15:54:58,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009673233455232 [2023-11-17 15:54:58,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3399 transitions. [2023-11-17 15:54:58,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3399 transitions. [2023-11-17 15:54:58,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:58,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3399 transitions. [2023-11-17 15:54:58,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 485.57142857142856) internal successors, (3399), 7 states have internal predecessors, (3399), 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 15:54:58,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1211.0) internal successors, (9688), 8 states have internal predecessors, (9688), 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 15:54:58,191 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1211.0) internal successors, (9688), 8 states have internal predecessors, (9688), 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 15:54:58,191 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 148 flow. Second operand 7 states and 3399 transitions. [2023-11-17 15:54:58,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 238 flow [2023-11-17 15:54:58,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 230 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 15:54:58,193 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 186 flow [2023-11-17 15:54:58,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-17 15:54:58,194 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-11-17 15:54:58,194 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 186 flow [2023-11-17 15:54:58,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 481.88235294117646) internal successors, (8192), 17 states have internal predecessors, (8192), 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 15:54:58,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:58,196 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:58,207 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 15:54:58,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:58,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:58,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash -875039960, now seen corresponding path program 2 times [2023-11-17 15:54:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939254687] [2023-11-17 15:54:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:54:58,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:58,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939254687] [2023-11-17 15:54:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939254687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:54:58,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250055612] [2023-11-17 15:54:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:54:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:54:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:54:58,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 475 out of 1211 [2023-11-17 15:54:58,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 480.6666666666667) internal successors, (1442), 3 states have internal predecessors, (1442), 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 15:54:58,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:58,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 475 of 1211 [2023-11-17 15:54:58,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:58,693 INFO L124 PetriNetUnfolderBase]: 161/284 cut-off events. [2023-11-17 15:54:58,694 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-17 15:54:58,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 284 events. 161/284 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 832 event pairs, 83 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 599. Up to 229 conditions per place. [2023-11-17 15:54:58,695 INFO L140 encePairwiseOnDemand]: 1208/1211 looper letters, 51 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-11-17 15:54:58,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 327 flow [2023-11-17 15:54:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:54:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:54:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1468 transitions. [2023-11-17 15:54:58,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40407376823561797 [2023-11-17 15:54:58,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1468 transitions. [2023-11-17 15:54:58,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1468 transitions. [2023-11-17 15:54:58,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:58,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1468 transitions. [2023-11-17 15:54:58,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 489.3333333333333) internal successors, (1468), 3 states have internal predecessors, (1468), 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 15:54:58,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:58,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:58,707 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 186 flow. Second operand 3 states and 1468 transitions. [2023-11-17 15:54:58,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 327 flow [2023-11-17 15:54:58,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 303 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 15:54:58,711 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 177 flow [2023-11-17 15:54:58,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-17 15:54:58,712 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2023-11-17 15:54:58,712 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 177 flow [2023-11-17 15:54:58,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 480.6666666666667) internal successors, (1442), 3 states have internal predecessors, (1442), 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 15:54:58,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:58,713 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:58,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:54:58,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:58,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -144337482, now seen corresponding path program 1 times [2023-11-17 15:54:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:58,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919847801] [2023-11-17 15:54:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:58,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-17 15:54:58,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:58,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919847801] [2023-11-17 15:54:58,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919847801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:58,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:58,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:54:58,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980343446] [2023-11-17 15:54:58,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:58,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:54:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:54:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:54:58,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 475 out of 1211 [2023-11-17 15:54:58,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 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 15:54:58,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:58,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 475 of 1211 [2023-11-17 15:54:58,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:59,047 INFO L124 PetriNetUnfolderBase]: 255/438 cut-off events. [2023-11-17 15:54:59,047 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2023-11-17 15:54:59,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 438 events. 255/438 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1335 event pairs, 119 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 1095. Up to 295 conditions per place. [2023-11-17 15:54:59,050 INFO L140 encePairwiseOnDemand]: 1207/1211 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-17 15:54:59,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 326 flow [2023-11-17 15:54:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:54:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:54:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1466 transitions. [2023-11-17 15:54:59,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035232590145885 [2023-11-17 15:54:59,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1466 transitions. [2023-11-17 15:54:59,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1466 transitions. [2023-11-17 15:54:59,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:59,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1466 transitions. [2023-11-17 15:54:59,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 488.6666666666667) internal successors, (1466), 3 states have internal predecessors, (1466), 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 15:54:59,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:59,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1211.0) internal successors, (4844), 4 states have internal predecessors, (4844), 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 15:54:59,062 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 177 flow. Second operand 3 states and 1466 transitions. [2023-11-17 15:54:59,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 326 flow [2023-11-17 15:54:59,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 317 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:59,064 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 194 flow [2023-11-17 15:54:59,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1211, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-11-17 15:54:59,065 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-11-17 15:54:59,065 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 194 flow [2023-11-17 15:54:59,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 481.0) internal successors, (1443), 3 states have internal predecessors, (1443), 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 15:54:59,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:59,066 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 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 15:54:59,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:54:59,066 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:59,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1564018874, now seen corresponding path program 1 times [2023-11-17 15:54:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:59,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167595113] [2023-11-17 15:54:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:59,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:55:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167595113] [2023-11-17 15:55:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167595113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:55:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066564832] [2023-11-17 15:55:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:55:02,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:55:02,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:55:02,036 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 15:55:02,040 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 15:55:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:55:02,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 15:55:02,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:55:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-17 15:55:03,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:52,933 WARN L293 SmtUtils]: Spent 5.77m on a formula simplification that was a NOOP. DAG size: 4666 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 16:00:52,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:52,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 47 select indices, 47 select index equivalence classes, 0 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 1081 case distinctions, treesize of input 874 treesize of output 14400 [2023-11-17 16:00:59,781 WARN L293 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 4872 DAG size of output: 4871 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:01:13,833 WARN L293 SmtUtils]: Spent 13.19s on a formula simplification. DAG size of input: 4873 DAG size of output: 4813 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDml.applyElimination) Received shutdown request... [2023-11-17 16:03:40,601 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:03:40,621 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:03:41,073 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:03:41,084 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 16:03:41,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:41,281 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-1085-37-3-4-4-3-4-2-1 context. [2023-11-17 16:03:41,283 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:03:41,283 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:03:41,283 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-11-17 16:03:41,286 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:03:41,286 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:03:41,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:03:41 BasicIcfg [2023-11-17 16:03:41,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:03:41,290 INFO L158 Benchmark]: Toolchain (without parser) took 548023.04ms. Allocated memory was 179.3MB in the beginning and 811.6MB in the end (delta: 632.3MB). Free memory was 127.6MB in the beginning and 514.0MB in the end (delta: -386.3MB). Peak memory consumption was 517.9MB. Max. memory is 8.0GB. [2023-11-17 16:03:41,290 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:03:41,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.56ms. Allocated memory is still 179.3MB. Free memory was 127.3MB in the beginning and 113.9MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 16:03:41,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.29ms. Allocated memory is still 179.3MB. Free memory was 113.9MB in the beginning and 110.6MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 16:03:41,291 INFO L158 Benchmark]: Boogie Preprocessor took 38.41ms. Allocated memory is still 179.3MB. Free memory was 110.6MB in the beginning and 107.7MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 16:03:41,292 INFO L158 Benchmark]: RCFGBuilder took 909.65ms. Allocated memory was 179.3MB in the beginning and 221.2MB in the end (delta: 41.9MB). Free memory was 107.7MB in the beginning and 171.7MB in the end (delta: -64.0MB). Peak memory consumption was 22.5MB. Max. memory is 8.0GB. [2023-11-17 16:03:41,292 INFO L158 Benchmark]: TraceAbstraction took 546757.41ms. Allocated memory was 221.2MB in the beginning and 811.6MB in the end (delta: 590.3MB). Free memory was 171.2MB in the beginning and 514.0MB in the end (delta: -342.8MB). Peak memory consumption was 518.4MB. Max. memory is 8.0GB. [2023-11-17 16:03:41,293 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 179.3MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 252.56ms. Allocated memory is still 179.3MB. Free memory was 127.3MB in the beginning and 113.9MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.29ms. Allocated memory is still 179.3MB. Free memory was 113.9MB in the beginning and 110.6MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.41ms. Allocated memory is still 179.3MB. Free memory was 110.6MB in the beginning and 107.7MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 909.65ms. Allocated memory was 179.3MB in the beginning and 221.2MB in the end (delta: 41.9MB). Free memory was 107.7MB in the beginning and 171.7MB in the end (delta: -64.0MB). Peak memory consumption was 22.5MB. Max. memory is 8.0GB. * TraceAbstraction took 546757.41ms. Allocated memory was 221.2MB in the beginning and 811.6MB in the end (delta: 590.3MB). Free memory was 171.2MB in the beginning and 514.0MB in the end (delta: -342.8MB). Peak memory consumption was 518.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.7s, 481 PlacesBefore, 29 PlacesAfterwards, 523 TransitionsBefore, 29 TransitionsAfterwards, 65772 CoEnabledTransitionPairs, 8 FixpointIterations, 147 TrivialSequentialCompositions, 315 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 145 ConcurrentYvCompositions, 42 ChoiceCompositions, 677 TotalNumberOfCompositions, 60404 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57908, independent: 57806, independent conditional: 0, independent unconditional: 57806, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 50409, independent: 50380, independent conditional: 0, independent unconditional: 50380, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 50409, independent: 50380, independent conditional: 0, independent unconditional: 50380, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 101, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 57908, independent: 7426, independent conditional: 0, independent unconditional: 7426, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 50409, unknown conditional: 0, unknown unconditional: 50409] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, 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 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-1085-37-3-4-4-3-4-2-1 context. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-1085-37-3-4-4-3-4-2-1 context. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-1085-37-3-4-4-3-4-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 798 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 546.6s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 19.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 743 IncrementalHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 0 mSDtfsCounter, 743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 246 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 1119 SizeOfPredicates, 38 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 174/227 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown