/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/popl20-more-vector-add.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:25:22,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:25:22,181 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 16:25:22,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:25:22,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:25:22,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:25:22,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:25:22,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:25:22,196 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:25:22,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:25:22,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:25:22,197 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:25:22,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:25:22,198 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:25:22,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:25:22,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:25:22,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:25:22,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:25:22,199 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:25:22,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:25:22,199 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:25:22,205 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:25:22,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:25:22,205 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:25:22,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:25:22,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:25:22,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:25:22,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:25:22,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:25:22,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:25:22,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:25:22,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:25:22,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:25:22,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:25:22,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:25:22,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:25:22,390 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:25:22,392 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:25:22,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-11-17 16:25:23,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:25:23,467 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:25:23,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-11-17 16:25:23,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b682b41d0/37cb5ae0cb3b40729a12f77f435c504d/FLAG7a5695279 [2023-11-17 16:25:23,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b682b41d0/37cb5ae0cb3b40729a12f77f435c504d [2023-11-17 16:25:23,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:25:23,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:25:23,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:25:23,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:25:23,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:25:23,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b19735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23, skipping insertion in model container [2023-11-17 16:25:23,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:25:23,620 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/popl20-more-vector-add.wvr.c[2637,2650] [2023-11-17 16:25:23,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:25:23,637 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:25:23,657 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/popl20-more-vector-add.wvr.c[2637,2650] [2023-11-17 16:25:23,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:25:23,669 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:25:23,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23 WrapperNode [2023-11-17 16:25:23,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:25:23,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:25:23,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:25:23,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:25:23,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,697 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 203 [2023-11-17 16:25:23,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:25:23,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:25:23,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:25:23,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:25:23,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,728 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:25:23,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:25:23,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:25:23,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:25:23,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (1/1) ... [2023-11-17 16:25:23,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:25:23,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:23,762 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 16:25:23,780 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 16:25:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:25:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:25:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:25:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:25:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:25:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:25:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:25:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:25:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:25:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:25:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:25:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:25:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:25:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:25:23,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:25:23,788 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 16:25:23,889 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:25:23,891 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:25:24,187 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:25:24,197 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:25:24,198 INFO L307 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-17 16:25:24,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:25:24 BoogieIcfgContainer [2023-11-17 16:25:24,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:25:24,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:25:24,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:25:24,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:25:24,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:25:23" (1/3) ... [2023-11-17 16:25:24,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b956e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:25:24, skipping insertion in model container [2023-11-17 16:25:24,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:25:23" (2/3) ... [2023-11-17 16:25:24,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0b956e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:25:24, skipping insertion in model container [2023-11-17 16:25:24,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:25:24" (3/3) ... [2023-11-17 16:25:24,204 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-11-17 16:25:24,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:25:24,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:25:24,216 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:25:24,301 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:25:24,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 307 transitions, 635 flow [2023-11-17 16:25:24,466 INFO L124 PetriNetUnfolderBase]: 25/304 cut-off events. [2023-11-17 16:25:24,466 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:25:24,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 304 events. 25/304 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 207 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-11-17 16:25:24,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 307 transitions, 635 flow [2023-11-17 16:25:24,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 293 transitions, 604 flow [2023-11-17 16:25:24,481 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:25:24,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 293 transitions, 604 flow [2023-11-17 16:25:24,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 293 transitions, 604 flow [2023-11-17 16:25:24,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 293 transitions, 604 flow [2023-11-17 16:25:24,536 INFO L124 PetriNetUnfolderBase]: 25/293 cut-off events. [2023-11-17 16:25:24,536 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:25:24,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 293 events. 25/293 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 206 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-11-17 16:25:24,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-11-17 16:25:30,616 INFO L134 LiptonReduction]: Checked pairs total: 4643 [2023-11-17 16:25:30,617 INFO L136 LiptonReduction]: Total number of compositions: 313 [2023-11-17 16:25:30,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:25:30,633 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;@35fe0b55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:25:30,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:25:30,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:25:30,637 INFO L124 PetriNetUnfolderBase]: 7/35 cut-off events. [2023-11-17 16:25:30,637 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:25:30,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:30,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:30,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:30,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:30,641 INFO L85 PathProgramCache]: Analyzing trace with hash -313554797, now seen corresponding path program 1 times [2023-11-17 16:25:30,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:30,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192261989] [2023-11-17 16:25:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:31,041 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 16:25:31,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:31,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192261989] [2023-11-17 16:25:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192261989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:31,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:25:31,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:25:31,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096233941] [2023-11-17 16:25:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:25:31,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:25:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:25:31,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 620 [2023-11-17 16:25:31,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 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 16:25:31,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:31,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 620 [2023-11-17 16:25:31,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:31,299 INFO L124 PetriNetUnfolderBase]: 943/1464 cut-off events. [2023-11-17 16:25:31,299 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-17 16:25:31,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2973 conditions, 1464 events. 943/1464 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5726 event pairs, 666 based on Foata normal form. 1/1181 useless extension candidates. Maximal degree in co-relation 1203. Up to 685 conditions per place. [2023-11-17 16:25:31,305 INFO L140 encePairwiseOnDemand]: 610/620 looper letters, 29 selfloop transitions, 8 changer transitions 39/79 dead transitions. [2023-11-17 16:25:31,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 79 transitions, 346 flow [2023-11-17 16:25:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:25:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:25:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1167 transitions. [2023-11-17 16:25:31,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764516129032258 [2023-11-17 16:25:31,324 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1167 transitions. [2023-11-17 16:25:31,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1167 transitions. [2023-11-17 16:25:31,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:31,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1167 transitions. [2023-11-17 16:25:31,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 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 16:25:31,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 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 16:25:31,338 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 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 16:25:31,339 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1167 transitions. [2023-11-17 16:25:31,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 79 transitions, 346 flow [2023-11-17 16:25:31,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 322 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:25:31,344 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2023-11-17 16:25:31,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-11-17 16:25:31,347 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-11-17 16:25:31,347 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2023-11-17 16:25:31,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 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 16:25:31,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:31,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:31,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:25:31,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:31,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:31,349 INFO L85 PathProgramCache]: Analyzing trace with hash 999817681, now seen corresponding path program 1 times [2023-11-17 16:25:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:31,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515468825] [2023-11-17 16:25:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:31,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:31,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:31,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515468825] [2023-11-17 16:25:31,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515468825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:31,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611066746] [2023-11-17 16:25:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:31,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:31,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:31,462 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 16:25:31,493 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 16:25:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:31,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:25:31,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:31,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611066746] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:31,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:25:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 16:25:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321675925] [2023-11-17 16:25:31,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:31,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:25:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:25:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:25:31,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 620 [2023-11-17 16:25:31,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 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 16:25:31,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:31,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 620 [2023-11-17 16:25:31,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:31,776 INFO L124 PetriNetUnfolderBase]: 665/996 cut-off events. [2023-11-17 16:25:31,776 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 16:25:31,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 996 events. 665/996 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3688 event pairs, 253 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 2014. Up to 505 conditions per place. [2023-11-17 16:25:31,781 INFO L140 encePairwiseOnDemand]: 614/620 looper letters, 47 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-11-17 16:25:31,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 264 flow [2023-11-17 16:25:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:25:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:25:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1105 transitions. [2023-11-17 16:25:31,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3564516129032258 [2023-11-17 16:25:31,784 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1105 transitions. [2023-11-17 16:25:31,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1105 transitions. [2023-11-17 16:25:31,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:31,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1105 transitions. [2023-11-17 16:25:31,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 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 16:25:31,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 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 16:25:31,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 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 16:25:31,791 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 1105 transitions. [2023-11-17 16:25:31,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 264 flow [2023-11-17 16:25:31,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 246 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 16:25:31,797 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2023-11-17 16:25:31,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-11-17 16:25:31,798 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-17 16:25:31,798 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2023-11-17 16:25:31,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 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 16:25:31,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:31,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:31,807 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 16:25:32,004 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 16:25:32,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:32,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1045327517, now seen corresponding path program 1 times [2023-11-17 16:25:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962920181] [2023-11-17 16:25:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962920181] [2023-11-17 16:25:32,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962920181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377130631] [2023-11-17 16:25:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:32,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:32,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:32,179 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 16:25:32,203 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 16:25:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:32,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:25:32,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:32,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377130631] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:32,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 16:25:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306811578] [2023-11-17 16:25:32,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:32,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:25:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:25:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:25:32,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 620 [2023-11-17 16:25:32,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 13 states, 13 states have (on average 203.3846153846154) internal successors, (2644), 13 states have internal predecessors, (2644), 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 16:25:32,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:32,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 620 [2023-11-17 16:25:32,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:32,838 INFO L124 PetriNetUnfolderBase]: 1577/2295 cut-off events. [2023-11-17 16:25:32,838 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-11-17 16:25:32,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 2295 events. 1577/2295 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9913 event pairs, 402 based on Foata normal form. 0/2038 useless extension candidates. Maximal degree in co-relation 5540. Up to 801 conditions per place. [2023-11-17 16:25:32,849 INFO L140 encePairwiseOnDemand]: 604/620 looper letters, 105 selfloop transitions, 23 changer transitions 0/129 dead transitions. [2023-11-17 16:25:32,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 129 transitions, 676 flow [2023-11-17 16:25:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:25:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:25:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2522 transitions. [2023-11-17 16:25:32,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3389784946236559 [2023-11-17 16:25:32,854 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2522 transitions. [2023-11-17 16:25:32,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2522 transitions. [2023-11-17 16:25:32,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:32,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2522 transitions. [2023-11-17 16:25:32,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 210.16666666666666) internal successors, (2522), 12 states have internal predecessors, (2522), 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 16:25:32,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 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 16:25:32,869 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 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 16:25:32,870 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 12 states and 2522 transitions. [2023-11-17 16:25:32,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 129 transitions, 676 flow [2023-11-17 16:25:32,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 129 transitions, 652 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:32,874 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 230 flow [2023-11-17 16:25:32,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=230, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-11-17 16:25:32,875 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2023-11-17 16:25:32,876 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 230 flow [2023-11-17 16:25:32,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 203.3846153846154) internal successors, (2644), 13 states have internal predecessors, (2644), 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 16:25:32,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:32,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:32,883 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 16:25:33,081 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 16:25:33,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:33,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -906071135, now seen corresponding path program 2 times [2023-11-17 16:25:33,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:33,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199265442] [2023-11-17 16:25:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:33,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:33,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:33,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199265442] [2023-11-17 16:25:33,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199265442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:33,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993955235] [2023-11-17 16:25:33,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:25:33,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:33,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:33,206 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 16:25:33,233 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 16:25:33,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:25:33,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:33,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 16:25:33,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:33,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:25:33,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993955235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:33,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:25:33,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-17 16:25:33,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268558464] [2023-11-17 16:25:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:25:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:25:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:25:33,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 620 [2023-11-17 16:25:33,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 16:25:33,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:33,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 620 [2023-11-17 16:25:33,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:33,792 INFO L124 PetriNetUnfolderBase]: 2705/3926 cut-off events. [2023-11-17 16:25:33,792 INFO L125 PetriNetUnfolderBase]: For 3546/3546 co-relation queries the response was YES. [2023-11-17 16:25:33,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11231 conditions, 3926 events. 2705/3926 cut-off events. For 3546/3546 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17940 event pairs, 1106 based on Foata normal form. 1/3925 useless extension candidates. Maximal degree in co-relation 11172. Up to 2208 conditions per place. [2023-11-17 16:25:33,811 INFO L140 encePairwiseOnDemand]: 613/620 looper letters, 101 selfloop transitions, 9 changer transitions 12/123 dead transitions. [2023-11-17 16:25:33,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 123 transitions, 747 flow [2023-11-17 16:25:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:25:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:25:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1603 transitions. [2023-11-17 16:25:33,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43091397849462365 [2023-11-17 16:25:33,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1603 transitions. [2023-11-17 16:25:33,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1603 transitions. [2023-11-17 16:25:33,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:33,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1603 transitions. [2023-11-17 16:25:33,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 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 16:25:33,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 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 16:25:33,827 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 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 16:25:33,827 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 230 flow. Second operand 6 states and 1603 transitions. [2023-11-17 16:25:33,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 123 transitions, 747 flow [2023-11-17 16:25:33,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 123 transitions, 736 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:25:33,836 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 294 flow [2023-11-17 16:25:33,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-11-17 16:25:33,838 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-11-17 16:25:33,838 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 294 flow [2023-11-17 16:25:33,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 16:25:33,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:33,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:33,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-17 16:25:34,045 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 16:25:34,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:34,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1492408465, now seen corresponding path program 3 times [2023-11-17 16:25:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:34,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007458843] [2023-11-17 16:25:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:34,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007458843] [2023-11-17 16:25:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007458843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829549402] [2023-11-17 16:25:34,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:25:34,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:34,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:34,179 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 16:25:34,204 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 16:25:34,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:25:34,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:34,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 16:25:34,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:34,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:34,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:25:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829549402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:34,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:25:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-17 16:25:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828563347] [2023-11-17 16:25:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:34,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:25:34,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:25:34,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:25:34,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 620 [2023-11-17 16:25:34,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 16:25:34,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:34,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 620 [2023-11-17 16:25:34,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:34,812 INFO L124 PetriNetUnfolderBase]: 3097/4468 cut-off events. [2023-11-17 16:25:34,813 INFO L125 PetriNetUnfolderBase]: For 6143/6143 co-relation queries the response was YES. [2023-11-17 16:25:34,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14100 conditions, 4468 events. 3097/4468 cut-off events. For 6143/6143 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20872 event pairs, 1444 based on Foata normal form. 1/4468 useless extension candidates. Maximal degree in co-relation 14074. Up to 2670 conditions per place. [2023-11-17 16:25:34,836 INFO L140 encePairwiseOnDemand]: 613/620 looper letters, 89 selfloop transitions, 16 changer transitions 12/118 dead transitions. [2023-11-17 16:25:34,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 118 transitions, 770 flow [2023-11-17 16:25:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:25:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:25:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1604 transitions. [2023-11-17 16:25:34,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311827956989247 [2023-11-17 16:25:34,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1604 transitions. [2023-11-17 16:25:34,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1604 transitions. [2023-11-17 16:25:34,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:34,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1604 transitions. [2023-11-17 16:25:34,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.3333333333333) internal successors, (1604), 6 states have internal predecessors, (1604), 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 16:25:34,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 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 16:25:34,846 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 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 16:25:34,846 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 294 flow. Second operand 6 states and 1604 transitions. [2023-11-17 16:25:34,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 118 transitions, 770 flow [2023-11-17 16:25:34,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 755 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:34,866 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 403 flow [2023-11-17 16:25:34,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-11-17 16:25:34,867 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2023-11-17 16:25:34,868 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 403 flow [2023-11-17 16:25:34,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 16:25:34,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:34,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:34,879 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 16:25:35,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:35,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:35,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash 623487021, now seen corresponding path program 4 times [2023-11-17 16:25:35,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:35,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507381223] [2023-11-17 16:25:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507381223] [2023-11-17 16:25:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507381223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267810712] [2023-11-17 16:25:35,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:25:35,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:35,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:35,216 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 16:25:35,240 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 16:25:35,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:25:35,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:35,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:25:35,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:35,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:35,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267810712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:35,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:35,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-11-17 16:25:35,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112851661] [2023-11-17 16:25:35,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:25:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:25:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:25:35,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 620 [2023-11-17 16:25:35,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 403 flow. Second operand has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:35,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:35,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 620 [2023-11-17 16:25:35,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:36,396 INFO L124 PetriNetUnfolderBase]: 4309/6192 cut-off events. [2023-11-17 16:25:36,396 INFO L125 PetriNetUnfolderBase]: For 11884/11884 co-relation queries the response was YES. [2023-11-17 16:25:36,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20791 conditions, 6192 events. 4309/6192 cut-off events. For 11884/11884 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 29987 event pairs, 215 based on Foata normal form. 16/6208 useless extension candidates. Maximal degree in co-relation 20759. Up to 1014 conditions per place. [2023-11-17 16:25:36,424 INFO L140 encePairwiseOnDemand]: 601/620 looper letters, 210 selfloop transitions, 130 changer transitions 0/340 dead transitions. [2023-11-17 16:25:36,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 340 transitions, 2419 flow [2023-11-17 16:25:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:25:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:25:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5287 transitions. [2023-11-17 16:25:36,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32797766749379653 [2023-11-17 16:25:36,442 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5287 transitions. [2023-11-17 16:25:36,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5287 transitions. [2023-11-17 16:25:36,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:36,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5287 transitions. [2023-11-17 16:25:36,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 203.34615384615384) internal successors, (5287), 26 states have internal predecessors, (5287), 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 16:25:36,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 620.0) internal successors, (16740), 27 states have internal predecessors, (16740), 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 16:25:36,477 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 620.0) internal successors, (16740), 27 states have internal predecessors, (16740), 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 16:25:36,477 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 403 flow. Second operand 26 states and 5287 transitions. [2023-11-17 16:25:36,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 340 transitions, 2419 flow [2023-11-17 16:25:36,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 340 transitions, 2339 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-11-17 16:25:36,504 INFO L231 Difference]: Finished difference. Result has 106 places, 172 transitions, 1622 flow [2023-11-17 16:25:36,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1622, PETRI_PLACES=106, PETRI_TRANSITIONS=172} [2023-11-17 16:25:36,506 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2023-11-17 16:25:36,506 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 172 transitions, 1622 flow [2023-11-17 16:25:36,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 197.07692307692307) internal successors, (2562), 13 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:25:36,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:36,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:36,519 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 16:25:36,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:36,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:36,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash 726590569, now seen corresponding path program 5 times [2023-11-17 16:25:36,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:36,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565932197] [2023-11-17 16:25:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:36,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:36,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565932197] [2023-11-17 16:25:36,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565932197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957810056] [2023-11-17 16:25:36,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:25:36,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:36,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:36,846 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:36,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:25:36,954 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:25:36,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:36,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:25:36,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:37,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957810056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:37,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:37,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-11-17 16:25:37,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077889294] [2023-11-17 16:25:37,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:37,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:25:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:37,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:25:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:25:37,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 620 [2023-11-17 16:25:37,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 172 transitions, 1622 flow. Second operand has 14 states, 14 states have (on average 197.35714285714286) internal successors, (2763), 14 states have internal predecessors, (2763), 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 16:25:37,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:37,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 620 [2023-11-17 16:25:37,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:38,196 INFO L124 PetriNetUnfolderBase]: 5121/7338 cut-off events. [2023-11-17 16:25:38,196 INFO L125 PetriNetUnfolderBase]: For 34299/34299 co-relation queries the response was YES. [2023-11-17 16:25:38,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31604 conditions, 7338 events. 5121/7338 cut-off events. For 34299/34299 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 36097 event pairs, 513 based on Foata normal form. 14/7352 useless extension candidates. Maximal degree in co-relation 31515. Up to 1280 conditions per place. [2023-11-17 16:25:38,229 INFO L140 encePairwiseOnDemand]: 602/620 looper letters, 198 selfloop transitions, 224 changer transitions 0/422 dead transitions. [2023-11-17 16:25:38,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 422 transitions, 4166 flow [2023-11-17 16:25:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:25:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:25:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4481 transitions. [2023-11-17 16:25:38,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3285190615835777 [2023-11-17 16:25:38,237 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4481 transitions. [2023-11-17 16:25:38,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4481 transitions. [2023-11-17 16:25:38,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:38,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4481 transitions. [2023-11-17 16:25:38,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 203.6818181818182) internal successors, (4481), 22 states have internal predecessors, (4481), 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 16:25:38,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 620.0) internal successors, (14260), 23 states have internal predecessors, (14260), 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 16:25:38,255 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 620.0) internal successors, (14260), 23 states have internal predecessors, (14260), 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 16:25:38,255 INFO L175 Difference]: Start difference. First operand has 106 places, 172 transitions, 1622 flow. Second operand 22 states and 4481 transitions. [2023-11-17 16:25:38,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 422 transitions, 4166 flow [2023-11-17 16:25:38,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 422 transitions, 3953 flow, removed 64 selfloop flow, removed 5 redundant places. [2023-11-17 16:25:38,469 INFO L231 Difference]: Finished difference. Result has 130 places, 291 transitions, 3295 flow [2023-11-17 16:25:38,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3295, PETRI_PLACES=130, PETRI_TRANSITIONS=291} [2023-11-17 16:25:38,470 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2023-11-17 16:25:38,470 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 291 transitions, 3295 flow [2023-11-17 16:25:38,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 197.35714285714286) internal successors, (2763), 14 states have internal predecessors, (2763), 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 16:25:38,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:38,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:38,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 16:25:38,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:38,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:38,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash -203967651, now seen corresponding path program 6 times [2023-11-17 16:25:38,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:38,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213167764] [2023-11-17 16:25:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:38,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:25:38,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:38,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213167764] [2023-11-17 16:25:38,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213167764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:38,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976304432] [2023-11-17 16:25:38,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:25:38,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:38,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:38,797 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:38,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:25:38,899 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 16:25:38,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:38,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 16:25:38,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 16:25:38,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:25:38,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976304432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:25:38,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:25:38,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-17 16:25:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975574866] [2023-11-17 16:25:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:25:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:25:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:25:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:25:38,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 620 [2023-11-17 16:25:38,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 291 transitions, 3295 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 16:25:38,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:38,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 620 [2023-11-17 16:25:38,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:25:39,683 INFO L124 PetriNetUnfolderBase]: 4407/6349 cut-off events. [2023-11-17 16:25:39,683 INFO L125 PetriNetUnfolderBase]: For 41540/41540 co-relation queries the response was YES. [2023-11-17 16:25:39,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30505 conditions, 6349 events. 4407/6349 cut-off events. For 41540/41540 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31583 event pairs, 1463 based on Foata normal form. 1/6349 useless extension candidates. Maximal degree in co-relation 30401. Up to 3883 conditions per place. [2023-11-17 16:25:39,717 INFO L140 encePairwiseOnDemand]: 613/620 looper letters, 268 selfloop transitions, 64 changer transitions 13/346 dead transitions. [2023-11-17 16:25:39,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 346 transitions, 4401 flow [2023-11-17 16:25:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:25:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:25:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1602 transitions. [2023-11-17 16:25:39,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306451612903226 [2023-11-17 16:25:39,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1602 transitions. [2023-11-17 16:25:39,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1602 transitions. [2023-11-17 16:25:39,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:25:39,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1602 transitions. [2023-11-17 16:25:39,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 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 16:25:39,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 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 16:25:39,726 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 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 16:25:39,726 INFO L175 Difference]: Start difference. First operand has 130 places, 291 transitions, 3295 flow. Second operand 6 states and 1602 transitions. [2023-11-17 16:25:39,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 346 transitions, 4401 flow [2023-11-17 16:25:39,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 346 transitions, 4024 flow, removed 140 selfloop flow, removed 5 redundant places. [2023-11-17 16:25:39,983 INFO L231 Difference]: Finished difference. Result has 132 places, 291 transitions, 3174 flow [2023-11-17 16:25:39,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=3036, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3174, PETRI_PLACES=132, PETRI_TRANSITIONS=291} [2023-11-17 16:25:39,984 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2023-11-17 16:25:39,984 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 291 transitions, 3174 flow [2023-11-17 16:25:39,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 16:25:39,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:25:39,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:25:39,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:40,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:40,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:25:40,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:25:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1952362281, now seen corresponding path program 1 times [2023-11-17 16:25:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:25:40,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529032258] [2023-11-17 16:25:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:40,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:25:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529032258] [2023-11-17 16:25:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529032258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508179375] [2023-11-17 16:25:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:25:42,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:42,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:42,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:42,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:25:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:42,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-17 16:25:42,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:42,180 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 16:25:42,182 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 16:25:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,204 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-17 16:25:42,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 18 [2023-11-17 16:25:42,217 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 1 [2023-11-17 16:25:42,226 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-17 16:25:42,230 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 16:25:42,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,243 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 1 [2023-11-17 16:25:42,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,257 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-17 16:25:42,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,274 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2023-11-17 16:25:42,276 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 16:25:42,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,286 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-17 16:25:42,294 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 1 [2023-11-17 16:25:42,302 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-17 16:25:42,304 WARN L561 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2023-11-17 16:25:42,312 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 1 [2023-11-17 16:25:42,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,322 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2023-11-17 16:25:42,331 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-17 16:25:42,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 1 [2023-11-17 16:25:42,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,427 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-17 16:25:42,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-11-17 16:25:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,529 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-11-17 16:25:42,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2023-11-17 16:25:42,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:42,662 INFO L349 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-11-17 16:25:42,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2023-11-17 16:25:43,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-11-17 16:25:43,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:43,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:25:43,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2023-11-17 16:25:43,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 36 [2023-11-17 16:25:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:25:43,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:26:28,981 WARN L854 $PredicateComparison]: unable to prove that (forall ((~C2~0.offset Int) (v_ArrVal_508 (Array Int Int)) (|v_ULTIMATE.start_main_~k~0#1_55| Int)) (or (< c_~N~0 (+ |v_ULTIMATE.start_main_~k~0#1_55| 1)) (< |v_ULTIMATE.start_main_~k~0#1_55| 0) (let ((.cse0 (store (store |c_#memory_int| c_~C1~0.base (store (select |c_#memory_int| c_~C1~0.base) (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~C1~0.offset) (+ |c_thread1Thread1of1ForFork2_#t~mem2| |c_thread1Thread1of1ForFork2_#t~mem3|))) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508))) (let ((.cse1 (store (select .cse0 c_~C2~0.base) ~C2~0.offset (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset)))) (.cse2 (* 4 |v_ULTIMATE.start_main_~k~0#1_55|))) (= (mod (select (select (store .cse0 c_~C2~0.base .cse1) c_~C1~0.base) (+ .cse2 c_~C1~0.offset)) 4294967296) (mod (select .cse1 (+ .cse2 ~C2~0.offset)) 4294967296)))))) is different from false [2023-11-17 16:26:31,013 WARN L854 $PredicateComparison]: unable to prove that (forall ((~C2~0.offset Int) (v_ArrVal_508 (Array Int Int)) (|v_ULTIMATE.start_main_~k~0#1_55| Int)) (or (let ((.cse0 (store (store |c_#memory_int| c_~C1~0.base (let ((.cse3 (* c_thread1Thread1of1ForFork2_~i~0 4))) (store (select |c_#memory_int| c_~C1~0.base) (+ .cse3 c_~C1~0.offset) (+ (select (select |c_#memory_int| c_~B~0.base) (+ .cse3 c_~B~0.offset)) |c_thread1Thread1of1ForFork2_#t~mem2|)))) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_508))) (let ((.cse1 (store (select .cse0 c_~C2~0.base) ~C2~0.offset (+ (select (select .cse0 c_~B~0.base) c_~B~0.offset) (select (select .cse0 c_~A~0.base) c_~A~0.offset)))) (.cse2 (* 4 |v_ULTIMATE.start_main_~k~0#1_55|))) (= (mod (select (select (store .cse0 c_~C2~0.base .cse1) c_~C1~0.base) (+ .cse2 c_~C1~0.offset)) 4294967296) (mod (select .cse1 (+ .cse2 ~C2~0.offset)) 4294967296)))) (< c_~N~0 (+ |v_ULTIMATE.start_main_~k~0#1_55| 1)) (< |v_ULTIMATE.start_main_~k~0#1_55| 0))) is different from false [2023-11-17 16:26:31,080 INFO L349 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-11-17 16:26:31,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 285 treesize of output 145 [2023-11-17 16:26:31,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:26:31,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2725 treesize of output 2485 [2023-11-17 16:26:31,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:26:31,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2014 treesize of output 1670 [2023-11-17 16:26:32,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:26:32,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 627 treesize of output 583 [2023-11-17 16:26:38,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 234 [2023-11-17 16:26:38,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2023-11-17 16:26:38,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 200 [2023-11-17 16:26:38,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 574 treesize of output 526 [2023-11-17 16:26:41,911 INFO L349 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-11-17 16:26:41,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 759 treesize of output 678 [2023-11-17 16:26:55,992 INFO L349 Elim1Store]: treesize reduction 5, result has 95.7 percent of original size [2023-11-17 16:26:55,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 596 treesize of output 587 [2023-11-17 16:28:07,622 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:28:30,273 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:30:04,072 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:30:38,331 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:30:58,775 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:30:59,135 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:30:59,668 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:31:18,095 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:31:32,754 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:31:48,306 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-17 16:34:23,888 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-11-17 16:34:41,762 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:34:41,764 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 16:34:42,072 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 16:34:42,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 16:34:42,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-17 16:34:42,278 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-41-7-4-12-3-5-3-4-3-5-3-3-2-1 context. [2023-11-17 16:34:42,279 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 16:34:42,279 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 16:34:42,280 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 16:34:42,280 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2023-11-17 16:34:42,282 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:34:42,282 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:34:42,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:34:42 BasicIcfg [2023-11-17 16:34:42,284 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:34:42,285 INFO L158 Benchmark]: Toolchain (without parser) took 558801.47ms. Allocated memory was 336.6MB in the beginning and 901.8MB in the end (delta: 565.2MB). Free memory was 292.0MB in the beginning and 306.8MB in the end (delta: -14.8MB). Peak memory consumption was 684.1MB. Max. memory is 8.0GB. [2023-11-17 16:34:42,285 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory was 157.8MB in the beginning and 157.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:34:42,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.69ms. Allocated memory is still 336.6MB. Free memory was 291.7MB in the beginning and 279.7MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:34:42,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.09ms. Allocated memory is still 336.6MB. Free memory was 279.7MB in the beginning and 277.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:34:42,289 INFO L158 Benchmark]: Boogie Preprocessor took 30.59ms. Allocated memory is still 336.6MB. Free memory was 277.3MB in the beginning and 275.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:34:42,289 INFO L158 Benchmark]: RCFGBuilder took 470.12ms. Allocated memory is still 336.6MB. Free memory was 275.2MB in the beginning and 252.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-11-17 16:34:42,290 INFO L158 Benchmark]: TraceAbstraction took 558083.93ms. Allocated memory was 336.6MB in the beginning and 901.8MB in the end (delta: 565.2MB). Free memory was 251.5MB in the beginning and 306.8MB in the end (delta: -55.3MB). Peak memory consumption was 643.2MB. Max. memory is 8.0GB. [2023-11-17 16:34:42,291 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory was 157.8MB in the beginning and 157.7MB in the end (delta: 143.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.69ms. Allocated memory is still 336.6MB. Free memory was 291.7MB in the beginning and 279.7MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.09ms. Allocated memory is still 336.6MB. Free memory was 279.7MB in the beginning and 277.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.59ms. Allocated memory is still 336.6MB. Free memory was 277.3MB in the beginning and 275.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 470.12ms. Allocated memory is still 336.6MB. Free memory was 275.2MB in the beginning and 252.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 558083.93ms. Allocated memory was 336.6MB in the beginning and 901.8MB in the end (delta: 565.2MB). Free memory was 251.5MB in the beginning and 306.8MB in the end (delta: -55.3MB). Peak memory consumption was 643.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 278 PlacesBefore, 39 PlacesAfterwards, 293 TransitionsBefore, 36 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 7 FixpointIterations, 203 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 47 TrivialYvCompositions, 6 ConcurrentYvCompositions, 18 ChoiceCompositions, 313 TotalNumberOfCompositions, 4643 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3208, independent: 3074, independent conditional: 0, independent unconditional: 3074, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1858, independent: 1791, independent conditional: 0, independent unconditional: 1791, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1858, independent: 1791, independent conditional: 0, independent unconditional: 1791, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 67, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 102, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3208, independent: 1283, independent conditional: 0, independent unconditional: 1283, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 1858, unknown conditional: 0, unknown unconditional: 1858] , Statistics on independence cache: Total cache size (in pairs): 185, Positive cache size: 169, Positive conditional cache size: 0, Positive unconditional cache size: 169, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-41-7-4-12-3-5-3-4-3-5-3-3-2-1 context. - TimeoutResultAtElement [Line: 88]: 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 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-41-7-4-12-3-5-3-4-3-5-3-3-2-1 context. - TimeoutResultAtElement [Line: 89]: 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 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-41-7-4-12-3-5-3-4-3-5-3-3-2-1 context. - TimeoutResultAtElement [Line: 87]: 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 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-41-7-4-12-3-5-3-4-3-5-3-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 331 locations, 4 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: 558.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 649 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 649 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3770 IncrementalHoareTripleChecker+Invalid, 3822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 11 mSDtfsCounter, 3770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 279 SyntacticMatches, 9 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3295occurred in iteration=7, InterpolantAutomatonStates: 88, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 437 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 1561 SizeOfPredicates, 17 NumberOfNonLiveVariables, 2020 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 70/87 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