/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-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:16:44,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:16:44,674 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 16:16:44,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:16:44,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:16:44,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:16:44,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:16:44,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:16:44,707 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:16:44,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:16:44,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:16:44,712 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:16:44,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:16:44,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:16:44,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:16:44,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:16:44,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:16:44,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:16:44,714 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:16:44,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:16:44,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:16:44,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:16:44,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:16:44,716 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:16:44,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:16:44,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:16:44,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:16:44,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:16:44,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:16:44,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:16:44,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:16:44,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:16:44,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:16:44,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:16:44,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:16:44,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:16:44,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:16:44,999 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:16:45,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-11-17 16:16:46,125 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:16:46,331 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:16:46,331 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-11-17 16:16:46,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f6c4ec2/01757edf646f475c9d4033893c07950a/FLAGf69459298 [2023-11-17 16:16:46,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f6c4ec2/01757edf646f475c9d4033893c07950a [2023-11-17 16:16:46,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:16:46,359 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:16:46,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:16:46,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:16:46,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:16:46,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9ab19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46, skipping insertion in model container [2023-11-17 16:16:46,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,399 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:16:46,551 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-array-sum-alt.wvr.c[2800,2813] [2023-11-17 16:16:46,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:16:46,568 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:16:46,598 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-array-sum-alt.wvr.c[2800,2813] [2023-11-17 16:16:46,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:16:46,608 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:16:46,608 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:16:46,614 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:16:46,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46 WrapperNode [2023-11-17 16:16:46,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:16:46,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:16:46,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:16:46,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:16:46,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,665 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 209 [2023-11-17 16:16:46,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:16:46,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:16:46,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:16:46,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:16:46,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:16:46,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:16:46,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:16:46,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:16:46,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (1/1) ... [2023-11-17 16:16:46,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:16:46,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:46,733 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 16:16:46,736 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 16:16:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:16:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:16:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:16:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:16:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:16:46,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:16:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:16:46,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:16:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:16:46,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:16:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:16:46,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:16:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:16:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:16:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:16:46,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:16:46,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:16:46,758 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 16:16:46,886 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:16:46,890 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:16:47,290 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:16:47,466 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:16:47,467 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 16:16:47,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:16:47 BoogieIcfgContainer [2023-11-17 16:16:47,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:16:47,471 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:16:47,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:16:47,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:16:47,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:16:46" (1/3) ... [2023-11-17 16:16:47,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ee0755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:16:47, skipping insertion in model container [2023-11-17 16:16:47,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:16:46" (2/3) ... [2023-11-17 16:16:47,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ee0755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:16:47, skipping insertion in model container [2023-11-17 16:16:47,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:16:47" (3/3) ... [2023-11-17 16:16:47,477 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-11-17 16:16:47,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:16:47,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:16:47,495 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:16:47,579 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:16:47,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 162 transitions, 345 flow [2023-11-17 16:16:47,678 INFO L124 PetriNetUnfolderBase]: 12/159 cut-off events. [2023-11-17 16:16:47,678 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:16:47,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 159 events. 12/159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-17 16:16:47,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 162 transitions, 345 flow [2023-11-17 16:16:47,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 148 transitions, 314 flow [2023-11-17 16:16:47,691 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:16:47,702 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 148 transitions, 314 flow [2023-11-17 16:16:47,704 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 148 transitions, 314 flow [2023-11-17 16:16:47,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 148 transitions, 314 flow [2023-11-17 16:16:47,732 INFO L124 PetriNetUnfolderBase]: 12/148 cut-off events. [2023-11-17 16:16:47,732 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:16:47,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 12/148 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-17 16:16:47,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 1950 [2023-11-17 16:16:52,470 INFO L134 LiptonReduction]: Checked pairs total: 2287 [2023-11-17 16:16:52,470 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-11-17 16:16:52,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:16:52,489 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;@78989774, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:16:52,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:16:52,496 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:16:52,496 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-11-17 16:16:52,496 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:16:52,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:52,497 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] [2023-11-17 16:16:52,498 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 16:16:52,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1195967208, now seen corresponding path program 1 times [2023-11-17 16:16:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:52,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815214887] [2023-11-17 16:16:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:52,900 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 16:16:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815214887] [2023-11-17 16:16:52,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815214887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:16:52,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:16:52,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:16:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080488829] [2023-11-17 16:16:52,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:52,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:16:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:16:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:16:52,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 307 [2023-11-17 16:16:52,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 16:16:52,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:52,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 307 [2023-11-17 16:16:52,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:53,146 INFO L124 PetriNetUnfolderBase]: 723/1054 cut-off events. [2023-11-17 16:16:53,147 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-17 16:16:53,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 1054 events. 723/1054 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3857 event pairs, 253 based on Foata normal form. 1/826 useless extension candidates. Maximal degree in co-relation 1702. Up to 632 conditions per place. [2023-11-17 16:16:53,158 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 42 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-11-17 16:16:53,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 221 flow [2023-11-17 16:16:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:16:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:16:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-11-17 16:16:53,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501628664495114 [2023-11-17 16:16:53,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-11-17 16:16:53,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-11-17 16:16:53,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:53,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-11-17 16:16:53,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 16:16:53,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 16:16:53,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 16:16:53,204 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 462 transitions. [2023-11-17 16:16:53,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 221 flow [2023-11-17 16:16:53,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:16:53,210 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 84 flow [2023-11-17 16:16:53,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-17 16:16:53,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-11-17 16:16:53,215 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 84 flow [2023-11-17 16:16:53,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 16:16:53,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:53,216 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] [2023-11-17 16:16:53,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:16:53,217 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 16:16:53,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash -476269139, now seen corresponding path program 1 times [2023-11-17 16:16:53,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:53,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754339431] [2023-11-17 16:16:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754339431] [2023-11-17 16:16:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754339431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:16:53,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:16:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:16:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385775818] [2023-11-17 16:16:53,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:53,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:16:53,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:16:53,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:16:53,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 307 [2023-11-17 16:16:53,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 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 16:16:53,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:53,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 307 [2023-11-17 16:16:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:53,682 INFO L124 PetriNetUnfolderBase]: 1341/1989 cut-off events. [2023-11-17 16:16:53,682 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2023-11-17 16:16:53,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4597 conditions, 1989 events. 1341/1989 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8341 event pairs, 847 based on Foata normal form. 78/1777 useless extension candidates. Maximal degree in co-relation 1720. Up to 1055 conditions per place. [2023-11-17 16:16:53,694 INFO L140 encePairwiseOnDemand]: 301/307 looper letters, 65 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-11-17 16:16:53,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 70 transitions, 336 flow [2023-11-17 16:16:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:16:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:16:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2023-11-17 16:16:53,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293159609120521 [2023-11-17 16:16:53,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2023-11-17 16:16:53,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2023-11-17 16:16:53,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:53,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2023-11-17 16:16:53,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 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 16:16:53,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:16:53,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:16:53,702 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 84 flow. Second operand 5 states and 659 transitions. [2023-11-17 16:16:53,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 70 transitions, 336 flow [2023-11-17 16:16:53,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:16:53,705 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 118 flow [2023-11-17 16:16:53,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-11-17 16:16:53,705 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-11-17 16:16:53,706 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 118 flow [2023-11-17 16:16:53,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 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 16:16:53,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:53,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:53,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:16:53,707 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 16:16:53,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:53,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2032686786, now seen corresponding path program 1 times [2023-11-17 16:16:53,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:53,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339031562] [2023-11-17 16:16:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:53,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:53,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:53,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339031562] [2023-11-17 16:16:53,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339031562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:53,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301066814] [2023-11-17 16:16:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:53,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:53,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:53,853 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 16:16:53,861 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 16:16:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:53,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:16:53,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:54,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:54,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301066814] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:54,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:16:54,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-11-17 16:16:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503973163] [2023-11-17 16:16:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:16:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:16:54,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:16:54,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 307 [2023-11-17 16:16:54,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:54,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:54,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 307 [2023-11-17 16:16:54,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:54,675 INFO L124 PetriNetUnfolderBase]: 1609/2387 cut-off events. [2023-11-17 16:16:54,675 INFO L125 PetriNetUnfolderBase]: For 1180/1180 co-relation queries the response was YES. [2023-11-17 16:16:54,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 2387 events. 1609/2387 cut-off events. For 1180/1180 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10556 event pairs, 591 based on Foata normal form. 0/2038 useless extension candidates. Maximal degree in co-relation 3597. Up to 727 conditions per place. [2023-11-17 16:16:54,689 INFO L140 encePairwiseOnDemand]: 297/307 looper letters, 112 selfloop transitions, 24 changer transitions 0/136 dead transitions. [2023-11-17 16:16:54,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 136 transitions, 715 flow [2023-11-17 16:16:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 16:16:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 16:16:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1233 transitions. [2023-11-17 16:16:54,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40162866449511403 [2023-11-17 16:16:54,693 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1233 transitions. [2023-11-17 16:16:54,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1233 transitions. [2023-11-17 16:16:54,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:54,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1233 transitions. [2023-11-17 16:16:54,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.3) internal successors, (1233), 10 states have internal predecessors, (1233), 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 16:16:54,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 307.0) internal successors, (3377), 11 states have internal predecessors, (3377), 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 16:16:54,703 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 307.0) internal successors, (3377), 11 states have internal predecessors, (3377), 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 16:16:54,703 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 118 flow. Second operand 10 states and 1233 transitions. [2023-11-17 16:16:54,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 136 transitions, 715 flow [2023-11-17 16:16:54,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 136 transitions, 711 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:16:54,708 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 279 flow [2023-11-17 16:16:54,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2023-11-17 16:16:54,709 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-11-17 16:16:54,709 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 279 flow [2023-11-17 16:16:54,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:54,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:54,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:54,724 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 16:16:54,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:54,925 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 16:16:54,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:54,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1118640088, now seen corresponding path program 2 times [2023-11-17 16:16:54,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:54,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053963468] [2023-11-17 16:16:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:55,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053963468] [2023-11-17 16:16:55,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053963468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443323585] [2023-11-17 16:16:55,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:16:55,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:55,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:55,058 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 16:16:55,063 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 16:16:55,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:16:55,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:16:55,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:16:55,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:55,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:55,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443323585] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:55,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:16:55,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2023-11-17 16:16:55,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431648466] [2023-11-17 16:16:55,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:55,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:16:55,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:16:55,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:16:55,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 307 [2023-11-17 16:16:55,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:55,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:55,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 307 [2023-11-17 16:16:55,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:55,850 INFO L124 PetriNetUnfolderBase]: 1862/2762 cut-off events. [2023-11-17 16:16:55,850 INFO L125 PetriNetUnfolderBase]: For 3550/3550 co-relation queries the response was YES. [2023-11-17 16:16:55,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9021 conditions, 2762 events. 1862/2762 cut-off events. For 3550/3550 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12419 event pairs, 522 based on Foata normal form. 14/2775 useless extension candidates. Maximal degree in co-relation 6237. Up to 609 conditions per place. [2023-11-17 16:16:55,868 INFO L140 encePairwiseOnDemand]: 296/307 looper letters, 121 selfloop transitions, 49 changer transitions 0/170 dead transitions. [2023-11-17 16:16:55,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 170 transitions, 1125 flow [2023-11-17 16:16:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:16:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:16:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1465 transitions. [2023-11-17 16:16:55,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976655808903366 [2023-11-17 16:16:55,872 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1465 transitions. [2023-11-17 16:16:55,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1465 transitions. [2023-11-17 16:16:55,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:55,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1465 transitions. [2023-11-17 16:16:55,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.08333333333333) internal successors, (1465), 12 states have internal predecessors, (1465), 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 16:16:55,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 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 16:16:55,882 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 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 16:16:55,882 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 279 flow. Second operand 12 states and 1465 transitions. [2023-11-17 16:16:55,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 170 transitions, 1125 flow [2023-11-17 16:16:55,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 170 transitions, 1122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:16:55,900 INFO L231 Difference]: Finished difference. Result has 65 places, 82 transitions, 641 flow [2023-11-17 16:16:55,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=641, PETRI_PLACES=65, PETRI_TRANSITIONS=82} [2023-11-17 16:16:55,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 16:16:55,901 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 82 transitions, 641 flow [2023-11-17 16:16:55,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:55,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:55,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:55,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 16:16:56,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 16:16:56,108 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 16:16:56,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash 26530089, now seen corresponding path program 1 times [2023-11-17 16:16:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895102269] [2023-11-17 16:16:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:56,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:56,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:56,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895102269] [2023-11-17 16:16:56,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895102269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:16:56,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:16:56,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:16:56,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181270584] [2023-11-17 16:16:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:56,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:16:56,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:16:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:16:56,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 307 [2023-11-17 16:16:56,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 82 transitions, 641 flow. Second operand has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 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 16:16:56,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:56,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 307 [2023-11-17 16:16:56,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:56,538 INFO L124 PetriNetUnfolderBase]: 1588/2382 cut-off events. [2023-11-17 16:16:56,538 INFO L125 PetriNetUnfolderBase]: For 7030/7030 co-relation queries the response was YES. [2023-11-17 16:16:56,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9694 conditions, 2382 events. 1588/2382 cut-off events. For 7030/7030 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10327 event pairs, 952 based on Foata normal form. 62/2443 useless extension candidates. Maximal degree in co-relation 7683. Up to 1828 conditions per place. [2023-11-17 16:16:56,558 INFO L140 encePairwiseOnDemand]: 301/307 looper letters, 94 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2023-11-17 16:16:56,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 877 flow [2023-11-17 16:16:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:16:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:16:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 630 transitions. [2023-11-17 16:16:56,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41042345276872966 [2023-11-17 16:16:56,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 630 transitions. [2023-11-17 16:16:56,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 630 transitions. [2023-11-17 16:16:56,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:56,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 630 transitions. [2023-11-17 16:16:56,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:56,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:16:56,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:16:56,567 INFO L175 Difference]: Start difference. First operand has 65 places, 82 transitions, 641 flow. Second operand 5 states and 630 transitions. [2023-11-17 16:16:56,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 877 flow [2023-11-17 16:16:56,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 852 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 16:16:56,598 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 572 flow [2023-11-17 16:16:56,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=65, PETRI_TRANSITIONS=74} [2023-11-17 16:16:56,600 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 16:16:56,600 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 572 flow [2023-11-17 16:16:56,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.4) internal successors, (592), 5 states have internal predecessors, (592), 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 16:16:56,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:56,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:56,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:16:56,601 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 16:16:56,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1746055948, now seen corresponding path program 1 times [2023-11-17 16:16:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931704045] [2023-11-17 16:16:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931704045] [2023-11-17 16:16:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931704045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:16:56,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:16:56,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:16:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338153901] [2023-11-17 16:16:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:56,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:16:56,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:16:56,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:16:56,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 307 [2023-11-17 16:16:56,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 74 transitions, 572 flow. Second operand has 5 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 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 16:16:56,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:56,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 307 [2023-11-17 16:16:56,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:56,985 INFO L124 PetriNetUnfolderBase]: 1382/2070 cut-off events. [2023-11-17 16:16:56,985 INFO L125 PetriNetUnfolderBase]: For 6533/6533 co-relation queries the response was YES. [2023-11-17 16:16:56,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8571 conditions, 2070 events. 1382/2070 cut-off events. For 6533/6533 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8579 event pairs, 848 based on Foata normal form. 26/2095 useless extension candidates. Maximal degree in co-relation 7569. Up to 1828 conditions per place. [2023-11-17 16:16:57,005 INFO L140 encePairwiseOnDemand]: 301/307 looper letters, 63 selfloop transitions, 2 changer transitions 27/92 dead transitions. [2023-11-17 16:16:57,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 818 flow [2023-11-17 16:16:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:16:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:16:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 630 transitions. [2023-11-17 16:16:57,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41042345276872966 [2023-11-17 16:16:57,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 630 transitions. [2023-11-17 16:16:57,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 630 transitions. [2023-11-17 16:16:57,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:57,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 630 transitions. [2023-11-17 16:16:57,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:16:57,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:16:57,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:16:57,013 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 572 flow. Second operand 5 states and 630 transitions. [2023-11-17 16:16:57,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 818 flow [2023-11-17 16:16:57,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 767 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-17 16:16:57,039 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 484 flow [2023-11-17 16:16:57,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-11-17 16:16:57,042 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-11-17 16:16:57,042 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 484 flow [2023-11-17 16:16:57,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 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 16:16:57,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:57,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:57,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:16:57,043 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 16:16:57,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash -446234816, now seen corresponding path program 3 times [2023-11-17 16:16:57,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:57,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938990072] [2023-11-17 16:16:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:57,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:57,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938990072] [2023-11-17 16:16:57,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938990072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108252169] [2023-11-17 16:16:57,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:16:57,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:57,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:57,193 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 16:16:57,208 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 16:16:57,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:16:57,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:16:57,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:16:57,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:57,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:57,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108252169] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:57,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:16:57,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-11-17 16:16:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085709207] [2023-11-17 16:16:57,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:16:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:57,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:16:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:16:57,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 307 [2023-11-17 16:16:57,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:57,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:57,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 307 [2023-11-17 16:16:57,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:57,820 INFO L124 PetriNetUnfolderBase]: 1532/2253 cut-off events. [2023-11-17 16:16:57,820 INFO L125 PetriNetUnfolderBase]: For 5267/5267 co-relation queries the response was YES. [2023-11-17 16:16:57,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9173 conditions, 2253 events. 1532/2253 cut-off events. For 5267/5267 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9664 event pairs, 384 based on Foata normal form. 18/2270 useless extension candidates. Maximal degree in co-relation 9144. Up to 1000 conditions per place. [2023-11-17 16:16:57,838 INFO L140 encePairwiseOnDemand]: 296/307 looper letters, 85 selfloop transitions, 55 changer transitions 0/140 dead transitions. [2023-11-17 16:16:57,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 140 transitions, 1166 flow [2023-11-17 16:16:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:16:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:16:57,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1092 transitions. [2023-11-17 16:16:57,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952225841476656 [2023-11-17 16:16:57,841 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1092 transitions. [2023-11-17 16:16:57,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1092 transitions. [2023-11-17 16:16:57,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:57,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1092 transitions. [2023-11-17 16:16:57,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.33333333333333) internal successors, (1092), 9 states have internal predecessors, (1092), 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 16:16:57,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 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 16:16:57,849 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 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 16:16:57,849 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 484 flow. Second operand 9 states and 1092 transitions. [2023-11-17 16:16:57,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 140 transitions, 1166 flow [2023-11-17 16:16:57,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 140 transitions, 1104 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-17 16:16:57,876 INFO L231 Difference]: Finished difference. Result has 65 places, 86 transitions, 860 flow [2023-11-17 16:16:57,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=860, PETRI_PLACES=65, PETRI_TRANSITIONS=86} [2023-11-17 16:16:57,877 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 16:16:57,877 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 86 transitions, 860 flow [2023-11-17 16:16:57,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:57,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:57,877 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] [2023-11-17 16:16:57,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:16:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:58,086 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 16:16:58,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1598130072, now seen corresponding path program 4 times [2023-11-17 16:16:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:58,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114216927] [2023-11-17 16:16:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:58,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114216927] [2023-11-17 16:16:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114216927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:58,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190801236] [2023-11-17 16:16:58,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:16:58,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:58,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:58,221 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 16:16:58,224 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 16:16:58,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:16:58,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:16:58,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:16:58,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:58,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190801236] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:58,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:16:58,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-11-17 16:16:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548233842] [2023-11-17 16:16:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:16:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:16:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:16:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:16:58,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 307 [2023-11-17 16:16:58,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 86 transitions, 860 flow. Second operand has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:58,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:58,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 307 [2023-11-17 16:16:58,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:58,864 INFO L124 PetriNetUnfolderBase]: 1580/2329 cut-off events. [2023-11-17 16:16:58,865 INFO L125 PetriNetUnfolderBase]: For 8712/8712 co-relation queries the response was YES. [2023-11-17 16:16:58,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10872 conditions, 2329 events. 1580/2329 cut-off events. For 8712/8712 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10172 event pairs, 304 based on Foata normal form. 18/2346 useless extension candidates. Maximal degree in co-relation 10836. Up to 785 conditions per place. [2023-11-17 16:16:58,882 INFO L140 encePairwiseOnDemand]: 296/307 looper letters, 86 selfloop transitions, 52 changer transitions 0/138 dead transitions. [2023-11-17 16:16:58,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 138 transitions, 1402 flow [2023-11-17 16:16:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:16:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:16:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 970 transitions. [2023-11-17 16:16:58,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949511400651466 [2023-11-17 16:16:58,885 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 970 transitions. [2023-11-17 16:16:58,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 970 transitions. [2023-11-17 16:16:58,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:58,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 970 transitions. [2023-11-17 16:16:58,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.25) internal successors, (970), 8 states have internal predecessors, (970), 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 16:16:58,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 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 16:16:58,892 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 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 16:16:58,892 INFO L175 Difference]: Start difference. First operand has 65 places, 86 transitions, 860 flow. Second operand 8 states and 970 transitions. [2023-11-17 16:16:58,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 138 transitions, 1402 flow [2023-11-17 16:16:58,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 1341 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 16:16:58,939 INFO L231 Difference]: Finished difference. Result has 71 places, 95 transitions, 1098 flow [2023-11-17 16:16:58,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1098, PETRI_PLACES=71, PETRI_TRANSITIONS=95} [2023-11-17 16:16:58,940 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2023-11-17 16:16:58,940 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 95 transitions, 1098 flow [2023-11-17 16:16:58,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:16:58,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:58,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:58,949 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 16:16:59,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:59,147 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 16:16:59,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2104047246, now seen corresponding path program 5 times [2023-11-17 16:16:59,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376954582] [2023-11-17 16:16:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376954582] [2023-11-17 16:16:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376954582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811344782] [2023-11-17 16:16:59,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:16:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:59,266 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 16:16:59,289 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 16:16:59,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:16:59,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:16:59,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:16:59,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:59,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:16:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811344782] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:16:59,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:16:59,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 16:16:59,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442538894] [2023-11-17 16:16:59,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:16:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:16:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:16:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:16:59,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 307 [2023-11-17 16:16:59,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 1098 flow. Second operand has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 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 16:16:59,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:59,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 307 [2023-11-17 16:16:59,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:00,355 INFO L124 PetriNetUnfolderBase]: 1846/2686 cut-off events. [2023-11-17 16:17:00,355 INFO L125 PetriNetUnfolderBase]: For 14173/14173 co-relation queries the response was YES. [2023-11-17 16:17:00,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13967 conditions, 2686 events. 1846/2686 cut-off events. For 14173/14173 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11921 event pairs, 250 based on Foata normal form. 14/2699 useless extension candidates. Maximal degree in co-relation 13927. Up to 740 conditions per place. [2023-11-17 16:17:00,377 INFO L140 encePairwiseOnDemand]: 294/307 looper letters, 143 selfloop transitions, 173 changer transitions 0/316 dead transitions. [2023-11-17 16:17:00,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 316 transitions, 3840 flow [2023-11-17 16:17:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:17:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:17:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2536 transitions. [2023-11-17 16:17:00,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37548119632810184 [2023-11-17 16:17:00,384 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2536 transitions. [2023-11-17 16:17:00,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2536 transitions. [2023-11-17 16:17:00,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:00,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2536 transitions. [2023-11-17 16:17:00,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 115.27272727272727) internal successors, (2536), 22 states have internal predecessors, (2536), 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 16:17:00,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 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 16:17:00,401 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 307.0) internal successors, (7061), 23 states have internal predecessors, (7061), 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 16:17:00,401 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 1098 flow. Second operand 22 states and 2536 transitions. [2023-11-17 16:17:00,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 316 transitions, 3840 flow [2023-11-17 16:17:00,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 316 transitions, 3659 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-17 16:17:00,465 INFO L231 Difference]: Finished difference. Result has 98 places, 218 transitions, 3117 flow [2023-11-17 16:17:00,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3117, PETRI_PLACES=98, PETRI_TRANSITIONS=218} [2023-11-17 16:17:00,466 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2023-11-17 16:17:00,466 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 218 transitions, 3117 flow [2023-11-17 16:17:00,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 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 16:17:00,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:00,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:00,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 16:17:00,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:00,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:17:00,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash -708370860, now seen corresponding path program 6 times [2023-11-17 16:17:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865216292] [2023-11-17 16:17:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:00,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865216292] [2023-11-17 16:17:00,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865216292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:00,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168804046] [2023-11-17 16:17:00,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:17:00,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:00,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:00,854 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 16:17:00,857 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 16:17:00,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 16:17:00,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:17:00,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 16:17:00,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:01,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:01,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168804046] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:01,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:17:01,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2023-11-17 16:17:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90349301] [2023-11-17 16:17:01,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:17:01,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:17:01,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:17:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:17:01,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 307 [2023-11-17 16:17:01,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 218 transitions, 3117 flow. Second operand has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:17:01,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:01,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 307 [2023-11-17 16:17:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:01,600 INFO L124 PetriNetUnfolderBase]: 1827/2646 cut-off events. [2023-11-17 16:17:01,600 INFO L125 PetriNetUnfolderBase]: For 19223/19223 co-relation queries the response was YES. [2023-11-17 16:17:01,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15761 conditions, 2646 events. 1827/2646 cut-off events. For 19223/19223 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11464 event pairs, 214 based on Foata normal form. 14/2660 useless extension candidates. Maximal degree in co-relation 15710. Up to 731 conditions per place. [2023-11-17 16:17:01,623 INFO L140 encePairwiseOnDemand]: 297/307 looper letters, 120 selfloop transitions, 148 changer transitions 0/268 dead transitions. [2023-11-17 16:17:01,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 268 transitions, 3872 flow [2023-11-17 16:17:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:17:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:17:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2023-11-17 16:17:01,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937296416938111 [2023-11-17 16:17:01,627 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2023-11-17 16:17:01,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2023-11-17 16:17:01,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:01,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2023-11-17 16:17:01,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 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 16:17:01,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 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 16:17:01,633 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 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 16:17:01,633 INFO L175 Difference]: Start difference. First operand has 98 places, 218 transitions, 3117 flow. Second operand 8 states and 967 transitions. [2023-11-17 16:17:01,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 268 transitions, 3872 flow [2023-11-17 16:17:01,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 268 transitions, 3797 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-11-17 16:17:01,789 INFO L231 Difference]: Finished difference. Result has 106 places, 220 transitions, 3576 flow [2023-11-17 16:17:01,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3576, PETRI_PLACES=106, PETRI_TRANSITIONS=220} [2023-11-17 16:17:01,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 74 predicate places. [2023-11-17 16:17:01,790 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 220 transitions, 3576 flow [2023-11-17 16:17:01,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 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 16:17:01,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:01,791 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 16:17:01,795 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 16:17:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:01,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:17:01,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash 348360101, now seen corresponding path program 1 times [2023-11-17 16:17:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:01,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833139697] [2023-11-17 16:17:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:01,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:02,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:02,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833139697] [2023-11-17 16:17:02,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833139697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:02,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377833706] [2023-11-17 16:17:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:02,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:02,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:02,077 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 16:17:02,099 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 16:17:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:02,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:17:02,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:02,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377833706] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:02,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:17:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-11-17 16:17:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647016299] [2023-11-17 16:17:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:17:02,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:17:02,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:02,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:17:02,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:17:02,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 307 [2023-11-17 16:17:02,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 220 transitions, 3576 flow. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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 16:17:02,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:02,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 307 [2023-11-17 16:17:02,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:02,622 INFO L124 PetriNetUnfolderBase]: 1758/2529 cut-off events. [2023-11-17 16:17:02,622 INFO L125 PetriNetUnfolderBase]: For 26455/26455 co-relation queries the response was YES. [2023-11-17 16:17:02,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16070 conditions, 2529 events. 1758/2529 cut-off events. For 26455/26455 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10606 event pairs, 464 based on Foata normal form. 158/2687 useless extension candidates. Maximal degree in co-relation 16015. Up to 1985 conditions per place. [2023-11-17 16:17:02,645 INFO L140 encePairwiseOnDemand]: 302/307 looper letters, 291 selfloop transitions, 13 changer transitions 0/304 dead transitions. [2023-11-17 16:17:02,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 304 transitions, 5504 flow [2023-11-17 16:17:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:17:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:17:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-11-17 16:17:02,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41498371335504886 [2023-11-17 16:17:02,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-11-17 16:17:02,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-11-17 16:17:02,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:02,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-11-17 16:17:02,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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 16:17:02,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:17:02,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 16:17:02,652 INFO L175 Difference]: Start difference. First operand has 106 places, 220 transitions, 3576 flow. Second operand 5 states and 637 transitions. [2023-11-17 16:17:02,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 304 transitions, 5504 flow [2023-11-17 16:17:02,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 304 transitions, 5356 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 16:17:02,780 INFO L231 Difference]: Finished difference. Result has 107 places, 221 transitions, 3531 flow [2023-11-17 16:17:02,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3531, PETRI_PLACES=107, PETRI_TRANSITIONS=221} [2023-11-17 16:17:02,781 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2023-11-17 16:17:02,781 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 221 transitions, 3531 flow [2023-11-17 16:17:02,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 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 16:17:02,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:02,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:02,788 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 16:17:02,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:02,988 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:17:02,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash 476239430, now seen corresponding path program 1 times [2023-11-17 16:17:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661733332] [2023-11-17 16:17:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:02,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:03,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:03,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661733332] [2023-11-17 16:17:03,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661733332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:03,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645261797] [2023-11-17 16:17:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:03,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:03,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:03,954 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 16:17:03,985 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 16:17:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:04,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-17 16:17:04,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:04,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:17:04,111 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 39 treesize of output 37 [2023-11-17 16:17:04,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:17:04,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:17:04,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:17:04,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:17:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:04,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:04,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:17:04,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 84 [2023-11-17 16:17:04,832 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 40 treesize of output 34 [2023-11-17 16:17:04,838 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 70 treesize of output 58 [2023-11-17 16:17:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645261797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:05,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:05,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-11-17 16:17:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138523406] [2023-11-17 16:17:05,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:05,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:17:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:17:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=608, Unknown=3, NotChecked=0, Total=702 [2023-11-17 16:17:05,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 307 [2023-11-17 16:17:05,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 221 transitions, 3531 flow. Second operand has 27 states, 27 states have (on average 83.92592592592592) internal successors, (2266), 27 states have internal predecessors, (2266), 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 16:17:05,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:05,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 307 [2023-11-17 16:17:05,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:07,218 INFO L124 PetriNetUnfolderBase]: 3597/5165 cut-off events. [2023-11-17 16:17:07,218 INFO L125 PetriNetUnfolderBase]: For 48109/48109 co-relation queries the response was YES. [2023-11-17 16:17:07,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34137 conditions, 5165 events. 3597/5165 cut-off events. For 48109/48109 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24464 event pairs, 247 based on Foata normal form. 3/5168 useless extension candidates. Maximal degree in co-relation 30851. Up to 2797 conditions per place. [2023-11-17 16:17:07,265 INFO L140 encePairwiseOnDemand]: 296/307 looper letters, 596 selfloop transitions, 291 changer transitions 7/894 dead transitions. [2023-11-17 16:17:07,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 894 transitions, 14711 flow [2023-11-17 16:17:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:17:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:17:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1608 transitions. [2023-11-17 16:17:07,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30810500095803794 [2023-11-17 16:17:07,272 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1608 transitions. [2023-11-17 16:17:07,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1608 transitions. [2023-11-17 16:17:07,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:07,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1608 transitions. [2023-11-17 16:17:07,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.58823529411765) internal successors, (1608), 17 states have internal predecessors, (1608), 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 16:17:07,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 307.0) internal successors, (5526), 18 states have internal predecessors, (5526), 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 16:17:07,298 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 307.0) internal successors, (5526), 18 states have internal predecessors, (5526), 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 16:17:07,298 INFO L175 Difference]: Start difference. First operand has 107 places, 221 transitions, 3531 flow. Second operand 17 states and 1608 transitions. [2023-11-17 16:17:07,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 894 transitions, 14711 flow [2023-11-17 16:17:07,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 894 transitions, 14675 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 16:17:07,679 INFO L231 Difference]: Finished difference. Result has 129 places, 472 transitions, 9114 flow [2023-11-17 16:17:07,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9114, PETRI_PLACES=129, PETRI_TRANSITIONS=472} [2023-11-17 16:17:07,680 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2023-11-17 16:17:07,680 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 472 transitions, 9114 flow [2023-11-17 16:17:07,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 83.92592592592592) internal successors, (2266), 27 states have internal predecessors, (2266), 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 16:17:07,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:07,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:07,689 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 16:17:07,886 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,SelfDestructingSolverStorable11 [2023-11-17 16:17:07,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:17:07,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash -488133940, now seen corresponding path program 2 times [2023-11-17 16:17:07,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:07,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276489586] [2023-11-17 16:17:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:08,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276489586] [2023-11-17 16:17:08,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276489586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:08,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305264219] [2023-11-17 16:17:08,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:17:08,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:08,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:08,840 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:17:08,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 16:17:08,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:17:08,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:17:08,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 16:17:08,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:09,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:17:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:09,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:09,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:17:09,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 16:17:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:09,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305264219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:09,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 23 [2023-11-17 16:17:09,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430870079] [2023-11-17 16:17:09,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:09,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:17:09,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:09,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:17:09,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:17:09,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 307 [2023-11-17 16:17:09,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 472 transitions, 9114 flow. Second operand has 25 states, 25 states have (on average 80.4) internal successors, (2010), 25 states have internal predecessors, (2010), 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 16:17:09,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 307 [2023-11-17 16:17:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:12,510 INFO L124 PetriNetUnfolderBase]: 6220/8856 cut-off events. [2023-11-17 16:17:12,510 INFO L125 PetriNetUnfolderBase]: For 105583/105583 co-relation queries the response was YES. [2023-11-17 16:17:12,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65073 conditions, 8856 events. 6220/8856 cut-off events. For 105583/105583 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 45419 event pairs, 376 based on Foata normal form. 2/8858 useless extension candidates. Maximal degree in co-relation 64173. Up to 5106 conditions per place. [2023-11-17 16:17:12,592 INFO L140 encePairwiseOnDemand]: 293/307 looper letters, 680 selfloop transitions, 698 changer transitions 1/1379 dead transitions. [2023-11-17 16:17:12,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1379 transitions, 24986 flow [2023-11-17 16:17:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-17 16:17:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-17 16:17:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3957 transitions. [2023-11-17 16:17:12,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2802011046593967 [2023-11-17 16:17:12,604 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3957 transitions. [2023-11-17 16:17:12,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3957 transitions. [2023-11-17 16:17:12,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:12,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3957 transitions. [2023-11-17 16:17:12,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 86.02173913043478) internal successors, (3957), 46 states have internal predecessors, (3957), 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 16:17:12,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 307.0) internal successors, (14429), 47 states have internal predecessors, (14429), 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 16:17:12,636 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 307.0) internal successors, (14429), 47 states have internal predecessors, (14429), 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 16:17:12,636 INFO L175 Difference]: Start difference. First operand has 129 places, 472 transitions, 9114 flow. Second operand 46 states and 3957 transitions. [2023-11-17 16:17:12,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1379 transitions, 24986 flow [2023-11-17 16:17:13,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1379 transitions, 24432 flow, removed 276 selfloop flow, removed 1 redundant places. [2023-11-17 16:17:13,489 INFO L231 Difference]: Finished difference. Result has 200 places, 1072 transitions, 22272 flow [2023-11-17 16:17:13,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=8824, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=22272, PETRI_PLACES=200, PETRI_TRANSITIONS=1072} [2023-11-17 16:17:13,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 168 predicate places. [2023-11-17 16:17:13,490 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 1072 transitions, 22272 flow [2023-11-17 16:17:13,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 80.4) internal successors, (2010), 25 states have internal predecessors, (2010), 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 16:17:13,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:13,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:13,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 16:17:13,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:17:13,692 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:17:13,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash 395214979, now seen corresponding path program 1 times [2023-11-17 16:17:13,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:13,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637377752] [2023-11-17 16:17:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:13,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:14,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:14,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637377752] [2023-11-17 16:17:14,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637377752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:14,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900596349] [2023-11-17 16:17:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:14,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:14,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:14,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:17:14,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 16:17:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:14,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-17 16:17:14,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:14,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 16:17:14,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:17:14,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:17:14,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:17:14,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:17:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:14,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:14,896 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_385 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_385) c_~A~0.base))) (= (+ c_~res1~0 (select .cse0 (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))) (+ c_~res2~0 (select .cse0 c_~A~0.offset))))) is different from false [2023-11-17 16:17:14,907 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_384 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_385) c_~A~0.base))) (= (+ (select .cse0 (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) c_~res1~0) (+ c_~res2~0 (select .cse0 c_~A~0.offset))))) is different from false [2023-11-17 16:17:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:14,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900596349] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:14,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:14,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 21 [2023-11-17 16:17:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815462786] [2023-11-17 16:17:14,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:14,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:17:14,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:14,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:17:14,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=344, Unknown=2, NotChecked=78, Total=506 [2023-11-17 16:17:14,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:17:14,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 1072 transitions, 22272 flow. Second operand has 23 states, 23 states have (on average 96.04347826086956) internal successors, (2209), 23 states have internal predecessors, (2209), 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 16:17:14,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:14,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:17:14,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:18,524 INFO L124 PetriNetUnfolderBase]: 9156/13002 cut-off events. [2023-11-17 16:17:18,524 INFO L125 PetriNetUnfolderBase]: For 199704/199704 co-relation queries the response was YES. [2023-11-17 16:17:18,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107929 conditions, 13002 events. 9156/13002 cut-off events. For 199704/199704 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 70412 event pairs, 689 based on Foata normal form. 2/13004 useless extension candidates. Maximal degree in co-relation 107255. Up to 8165 conditions per place. [2023-11-17 16:17:18,753 INFO L140 encePairwiseOnDemand]: 294/307 looper letters, 1119 selfloop transitions, 669 changer transitions 1/1789 dead transitions. [2023-11-17 16:17:18,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 1789 transitions, 39598 flow [2023-11-17 16:17:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:17:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:17:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1371 transitions. [2023-11-17 16:17:18,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3435229265848158 [2023-11-17 16:17:18,756 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1371 transitions. [2023-11-17 16:17:18,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1371 transitions. [2023-11-17 16:17:18,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:18,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1371 transitions. [2023-11-17 16:17:18,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 105.46153846153847) internal successors, (1371), 13 states have internal predecessors, (1371), 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 16:17:18,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:17:18,763 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:17:18,763 INFO L175 Difference]: Start difference. First operand has 200 places, 1072 transitions, 22272 flow. Second operand 13 states and 1371 transitions. [2023-11-17 16:17:18,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 1789 transitions, 39598 flow [2023-11-17 16:17:21,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1789 transitions, 38143 flow, removed 666 selfloop flow, removed 4 redundant places. [2023-11-17 16:17:21,696 INFO L231 Difference]: Finished difference. Result has 216 places, 1468 transitions, 32244 flow [2023-11-17 16:17:21,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=21208, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=32244, PETRI_PLACES=216, PETRI_TRANSITIONS=1468} [2023-11-17 16:17:21,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 184 predicate places. [2023-11-17 16:17:21,698 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 1468 transitions, 32244 flow [2023-11-17 16:17:21,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 96.04347826086956) internal successors, (2209), 23 states have internal predecessors, (2209), 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 16:17:21,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:21,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:21,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 16:17:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 16:17:21,904 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 16:17:21,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash -81390295, now seen corresponding path program 2 times [2023-11-17 16:17:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492670257] [2023-11-17 16:17:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:22,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492670257] [2023-11-17 16:17:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492670257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904961689] [2023-11-17 16:17:22,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:17:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:22,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:22,513 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:17:22,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 16:17:22,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:17:22,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:17:22,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 16:17:22,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:22,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:17:22,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:17:22,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:17:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:22,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:23,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:17:23,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 34 [2023-11-17 16:17:23,034 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 13 treesize of output 11 [2023-11-17 16:17:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:23,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904961689] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:23,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2023-11-17 16:17:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449473792] [2023-11-17 16:17:23,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:23,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:17:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:17:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=422, Unknown=2, NotChecked=0, Total=506 [2023-11-17 16:17:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:17:23,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 1468 transitions, 32244 flow. Second operand has 23 states, 23 states have (on average 96.17391304347827) internal successors, (2212), 23 states have internal predecessors, (2212), 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 16:17:23,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:23,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:17:23,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:28,311 INFO L124 PetriNetUnfolderBase]: 11386/16184 cut-off events. [2023-11-17 16:17:28,311 INFO L125 PetriNetUnfolderBase]: For 276613/276613 co-relation queries the response was YES. [2023-11-17 16:17:28,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140247 conditions, 16184 events. 11386/16184 cut-off events. For 276613/276613 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 90795 event pairs, 880 based on Foata normal form. 2/16186 useless extension candidates. Maximal degree in co-relation 139492. Up to 8896 conditions per place. [2023-11-17 16:17:28,461 INFO L140 encePairwiseOnDemand]: 295/307 looper letters, 1109 selfloop transitions, 979 changer transitions 2/2090 dead transitions. [2023-11-17 16:17:28,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 2090 transitions, 48237 flow [2023-11-17 16:17:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:17:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:17:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1580 transitions. [2023-11-17 16:17:28,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310532030401736 [2023-11-17 16:17:28,465 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1580 transitions. [2023-11-17 16:17:28,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1580 transitions. [2023-11-17 16:17:28,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:28,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1580 transitions. [2023-11-17 16:17:28,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.33333333333333) internal successors, (1580), 15 states have internal predecessors, (1580), 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 16:17:28,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 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 16:17:28,471 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 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 16:17:28,472 INFO L175 Difference]: Start difference. First operand has 216 places, 1468 transitions, 32244 flow. Second operand 15 states and 1580 transitions. [2023-11-17 16:17:28,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 2090 transitions, 48237 flow [2023-11-17 16:17:33,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 2090 transitions, 47918 flow, removed 157 selfloop flow, removed 2 redundant places. [2023-11-17 16:17:33,077 INFO L231 Difference]: Finished difference. Result has 236 places, 1771 transitions, 42352 flow [2023-11-17 16:17:33,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=31983, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=743, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=42352, PETRI_PLACES=236, PETRI_TRANSITIONS=1771} [2023-11-17 16:17:33,078 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 204 predicate places. [2023-11-17 16:17:33,078 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 1771 transitions, 42352 flow [2023-11-17 16:17:33,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 96.17391304347827) internal successors, (2212), 23 states have internal predecessors, (2212), 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 16:17:33,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:33,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:33,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 16:17:33,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 16:17:33,280 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 16:17:33,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:33,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1817967980, now seen corresponding path program 3 times [2023-11-17 16:17:33,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:33,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648594636] [2023-11-17 16:17:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:33,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648594636] [2023-11-17 16:17:34,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648594636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096626472] [2023-11-17 16:17:34,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:17:34,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:34,111 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:17:34,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 16:17:34,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:17:34,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:17:34,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 16:17:34,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:34,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:17:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:34,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:34,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:17:34,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 16:17:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096626472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:34,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:34,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 23 [2023-11-17 16:17:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841133174] [2023-11-17 16:17:34,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:34,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:17:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:17:34,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:17:34,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 307 [2023-11-17 16:17:34,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 1771 transitions, 42352 flow. Second operand has 25 states, 25 states have (on average 80.4) internal successors, (2010), 25 states have internal predecessors, (2010), 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 16:17:34,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:34,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 307 [2023-11-17 16:17:34,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:43,725 INFO L124 PetriNetUnfolderBase]: 15052/21571 cut-off events. [2023-11-17 16:17:43,725 INFO L125 PetriNetUnfolderBase]: For 486321/486321 co-relation queries the response was YES. [2023-11-17 16:17:43,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201997 conditions, 21571 events. 15052/21571 cut-off events. For 486321/486321 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 129137 event pairs, 1450 based on Foata normal form. 2/21573 useless extension candidates. Maximal degree in co-relation 201129. Up to 15357 conditions per place. [2023-11-17 16:17:43,986 INFO L140 encePairwiseOnDemand]: 292/307 looper letters, 1488 selfloop transitions, 1507 changer transitions 2/2997 dead transitions. [2023-11-17 16:17:43,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 2997 transitions, 73636 flow [2023-11-17 16:17:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-17 16:17:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-17 16:17:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3894 transitions. [2023-11-17 16:17:43,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28186753528773073 [2023-11-17 16:17:43,992 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3894 transitions. [2023-11-17 16:17:43,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3894 transitions. [2023-11-17 16:17:43,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:43,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3894 transitions. [2023-11-17 16:17:43,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 86.53333333333333) internal successors, (3894), 45 states have internal predecessors, (3894), 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 16:17:44,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 307.0) internal successors, (14122), 46 states have internal predecessors, (14122), 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 16:17:44,010 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 307.0) internal successors, (14122), 46 states have internal predecessors, (14122), 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 16:17:44,010 INFO L175 Difference]: Start difference. First operand has 236 places, 1771 transitions, 42352 flow. Second operand 45 states and 3894 transitions. [2023-11-17 16:17:44,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 2997 transitions, 73636 flow [2023-11-17 16:17:51,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 2997 transitions, 73133 flow, removed 116 selfloop flow, removed 4 redundant places. [2023-11-17 16:17:51,523 INFO L231 Difference]: Finished difference. Result has 300 places, 2659 transitions, 68697 flow [2023-11-17 16:17:51,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=41959, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=721, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=68697, PETRI_PLACES=300, PETRI_TRANSITIONS=2659} [2023-11-17 16:17:51,525 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2023-11-17 16:17:51,525 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 2659 transitions, 68697 flow [2023-11-17 16:17:51,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 80.4) internal successors, (2010), 25 states have internal predecessors, (2010), 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 16:17:51,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:51,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:51,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-17 16:17:51,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 16:17:51,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 16:17:51,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash 895067393, now seen corresponding path program 3 times [2023-11-17 16:17:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:51,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412107293] [2023-11-17 16:17:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412107293] [2023-11-17 16:17:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412107293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6495561] [2023-11-17 16:17:52,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:17:52,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:52,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:52,261 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:17:52,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 16:17:52,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:17:52,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:17:52,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 16:17:52,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:52,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:17:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:52,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:52,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:17:52,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 16:17:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:17:52,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6495561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:52,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:52,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 16 [2023-11-17 16:17:52,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26129411] [2023-11-17 16:17:52,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:17:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:17:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:17:52,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:17:52,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 2659 transitions, 68697 flow. Second operand has 18 states, 18 states have (on average 96.61111111111111) internal successors, (1739), 18 states have internal predecessors, (1739), 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 16:17:52,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:52,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:17:52,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:18:04,816 INFO L124 PetriNetUnfolderBase]: 17167/24520 cut-off events. [2023-11-17 16:18:04,817 INFO L125 PetriNetUnfolderBase]: For 621598/621598 co-relation queries the response was YES. [2023-11-17 16:18:05,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245228 conditions, 24520 events. 17167/24520 cut-off events. For 621598/621598 co-relation queries the response was YES. Maximal size of possible extension queue 1122. Compared 148255 event pairs, 2290 based on Foata normal form. 2/24522 useless extension candidates. Maximal degree in co-relation 244127. Up to 21146 conditions per place. [2023-11-17 16:18:05,267 INFO L140 encePairwiseOnDemand]: 295/307 looper letters, 2664 selfloop transitions, 583 changer transitions 1/3248 dead transitions. [2023-11-17 16:18:05,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 3248 transitions, 87606 flow [2023-11-17 16:18:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:18:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:18:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1460 transitions. [2023-11-17 16:18:05,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3396928804094928 [2023-11-17 16:18:05,270 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1460 transitions. [2023-11-17 16:18:05,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1460 transitions. [2023-11-17 16:18:05,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:18:05,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1460 transitions. [2023-11-17 16:18:05,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.28571428571429) internal successors, (1460), 14 states have internal predecessors, (1460), 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 16:18:05,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:18:05,276 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 307.0) internal successors, (4605), 15 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:18:05,276 INFO L175 Difference]: Start difference. First operand has 300 places, 2659 transitions, 68697 flow. Second operand 14 states and 1460 transitions. [2023-11-17 16:18:05,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 3248 transitions, 87606 flow [2023-11-17 16:18:16,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 3248 transitions, 85839 flow, removed 613 selfloop flow, removed 9 redundant places. [2023-11-17 16:18:16,909 INFO L231 Difference]: Finished difference. Result has 310 places, 2956 transitions, 76326 flow [2023-11-17 16:18:16,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=67182, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=76326, PETRI_PLACES=310, PETRI_TRANSITIONS=2956} [2023-11-17 16:18:16,912 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2023-11-17 16:18:16,912 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 2956 transitions, 76326 flow [2023-11-17 16:18:16,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 96.61111111111111) internal successors, (1739), 18 states have internal predecessors, (1739), 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 16:18:16,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:18:16,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:18:16,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 16:18:17,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 16:18:17,119 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 16:18:17,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:18:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1485599671, now seen corresponding path program 4 times [2023-11-17 16:18:17,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:18:17,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350027359] [2023-11-17 16:18:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:18:17,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:18:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:18:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:17,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:18:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350027359] [2023-11-17 16:18:17,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350027359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:18:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605698141] [2023-11-17 16:18:17,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:18:17,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:17,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:18:17,678 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:18:17,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 16:18:17,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:18:17,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:18:17,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-17 16:18:17,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:18:17,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 16:18:17,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:18:17,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:18:17,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:18:18,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:18:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:18,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:18:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:18:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605698141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:18:18,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:18:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 5] total 19 [2023-11-17 16:18:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772938111] [2023-11-17 16:18:18,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:18:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:18:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:18:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:18:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:18:18,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:18:18,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 2956 transitions, 76326 flow. Second operand has 21 states, 21 states have (on average 96.28571428571429) internal successors, (2022), 21 states have internal predecessors, (2022), 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 16:18:18,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:18:18,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:18:18,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:18:31,905 INFO L124 PetriNetUnfolderBase]: 17767/25412 cut-off events. [2023-11-17 16:18:31,905 INFO L125 PetriNetUnfolderBase]: For 657075/657075 co-relation queries the response was YES. [2023-11-17 16:18:32,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255765 conditions, 25412 events. 17767/25412 cut-off events. For 657075/657075 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 154983 event pairs, 2528 based on Foata normal form. 2/25414 useless extension candidates. Maximal degree in co-relation 254743. Up to 23497 conditions per place. [2023-11-17 16:18:32,675 INFO L140 encePairwiseOnDemand]: 295/307 looper letters, 2780 selfloop transitions, 400 changer transitions 1/3181 dead transitions. [2023-11-17 16:18:32,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 3181 transitions, 86957 flow [2023-11-17 16:18:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:18:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:18:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1346 transitions. [2023-11-17 16:18:32,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3372588323728389 [2023-11-17 16:18:32,678 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1346 transitions. [2023-11-17 16:18:32,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1346 transitions. [2023-11-17 16:18:32,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:18:32,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1346 transitions. [2023-11-17 16:18:32,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.53846153846153) internal successors, (1346), 13 states have internal predecessors, (1346), 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 16:18:32,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:18:32,683 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:18:32,683 INFO L175 Difference]: Start difference. First operand has 310 places, 2956 transitions, 76326 flow. Second operand 13 states and 1346 transitions. [2023-11-17 16:18:32,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 3181 transitions, 86957 flow [2023-11-17 16:18:45,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 3181 transitions, 84708 flow, removed 282 selfloop flow, removed 6 redundant places. [2023-11-17 16:18:45,399 INFO L231 Difference]: Finished difference. Result has 318 places, 3028 transitions, 76936 flow [2023-11-17 16:18:45,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=74138, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=76936, PETRI_PLACES=318, PETRI_TRANSITIONS=3028} [2023-11-17 16:18:45,402 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2023-11-17 16:18:45,402 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 3028 transitions, 76936 flow [2023-11-17 16:18:45,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 96.28571428571429) internal successors, (2022), 21 states have internal predecessors, (2022), 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 16:18:45,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:18:45,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:18:45,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 16:18:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:45,609 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 16:18:45,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:18:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash -796701021, now seen corresponding path program 5 times [2023-11-17 16:18:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:18:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701581483] [2023-11-17 16:18:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:18:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:18:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:18:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:46,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:18:46,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701581483] [2023-11-17 16:18:46,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701581483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:18:46,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115333500] [2023-11-17 16:18:46,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:18:46,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:46,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:18:46,084 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:18:46,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 16:18:46,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:18:46,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:18:46,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 16:18:46,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:18:46,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:18:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:18:46,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:18:46,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:18:46,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 16:18:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:18:46,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115333500] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:18:46,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:18:46,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 15 [2023-11-17 16:18:46,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613499670] [2023-11-17 16:18:46,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:18:46,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:18:46,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:18:46,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:18:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:18:46,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:18:46,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 3028 transitions, 76936 flow. Second operand has 17 states, 17 states have (on average 96.70588235294117) internal successors, (1644), 17 states have internal predecessors, (1644), 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 16:18:46,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:18:46,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:18:46,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:19:01,553 INFO L124 PetriNetUnfolderBase]: 20195/28840 cut-off events. [2023-11-17 16:19:01,554 INFO L125 PetriNetUnfolderBase]: For 713098/713098 co-relation queries the response was YES. [2023-11-17 16:19:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290483 conditions, 28840 events. 20195/28840 cut-off events. For 713098/713098 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 178714 event pairs, 2757 based on Foata normal form. 2/28842 useless extension candidates. Maximal degree in co-relation 289577. Up to 24664 conditions per place. [2023-11-17 16:19:01,997 INFO L140 encePairwiseOnDemand]: 295/307 looper letters, 2966 selfloop transitions, 755 changer transitions 1/3722 dead transitions. [2023-11-17 16:19:01,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 3722 transitions, 100013 flow [2023-11-17 16:19:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:19:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:19:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1364 transitions. [2023-11-17 16:19:02,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3417689802054623 [2023-11-17 16:19:02,118 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1364 transitions. [2023-11-17 16:19:02,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1364 transitions. [2023-11-17 16:19:02,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:19:02,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1364 transitions. [2023-11-17 16:19:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 104.92307692307692) internal successors, (1364), 13 states have internal predecessors, (1364), 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 16:19:02,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:19:02,122 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:19:02,122 INFO L175 Difference]: Start difference. First operand has 318 places, 3028 transitions, 76936 flow. Second operand 13 states and 1364 transitions. [2023-11-17 16:19:02,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 3722 transitions, 100013 flow [2023-11-17 16:19:17,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 3722 transitions, 99182 flow, removed 189 selfloop flow, removed 8 redundant places. [2023-11-17 16:19:17,126 INFO L231 Difference]: Finished difference. Result has 328 places, 3411 transitions, 89633 flow [2023-11-17 16:19:17,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=76105, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3028, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=89633, PETRI_PLACES=328, PETRI_TRANSITIONS=3411} [2023-11-17 16:19:17,129 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2023-11-17 16:19:17,129 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 3411 transitions, 89633 flow [2023-11-17 16:19:17,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 96.70588235294117) internal successors, (1644), 17 states have internal predecessors, (1644), 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 16:19:17,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:19:17,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:19:17,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 16:19:17,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:19:17,330 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 16:19:17,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:19:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1524339806, now seen corresponding path program 4 times [2023-11-17 16:19:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:19:17,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500055945] [2023-11-17 16:19:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:19:17,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:19:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:19:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:19:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:19:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500055945] [2023-11-17 16:19:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500055945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:19:17,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833823738] [2023-11-17 16:19:17,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:19:17,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:19:17,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:19:17,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:19:17,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 16:19:18,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:19:18,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:19:18,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 16:19:18,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:19:18,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:19:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:19:18,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:19:18,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:19:18,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 16:19:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:19:18,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833823738] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:19:18,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:19:18,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 24 [2023-11-17 16:19:18,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889131095] [2023-11-17 16:19:18,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:19:18,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 16:19:18,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:19:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 16:19:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:19:18,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 307 [2023-11-17 16:19:18,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 3411 transitions, 89633 flow. Second operand has 26 states, 26 states have (on average 80.15384615384616) internal successors, (2084), 26 states have internal predecessors, (2084), 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 16:19:18,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:19:18,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 307 [2023-11-17 16:19:18,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:19:38,188 INFO L124 PetriNetUnfolderBase]: 21034/30041 cut-off events. [2023-11-17 16:19:38,188 INFO L125 PetriNetUnfolderBase]: For 794997/794997 co-relation queries the response was YES. [2023-11-17 16:19:38,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309315 conditions, 30041 events. 21034/30041 cut-off events. For 794997/794997 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 187457 event pairs, 2206 based on Foata normal form. 2/30043 useless extension candidates. Maximal degree in co-relation 308530. Up to 23171 conditions per place. [2023-11-17 16:19:38,884 INFO L140 encePairwiseOnDemand]: 292/307 looper letters, 2064 selfloop transitions, 1776 changer transitions 1/3841 dead transitions. [2023-11-17 16:19:38,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 3841 transitions, 104726 flow [2023-11-17 16:19:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-17 16:19:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-17 16:19:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4003 transitions. [2023-11-17 16:19:38,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2774274031464412 [2023-11-17 16:19:38,890 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4003 transitions. [2023-11-17 16:19:38,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4003 transitions. [2023-11-17 16:19:38,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:19:38,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4003 transitions. [2023-11-17 16:19:38,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 85.17021276595744) internal successors, (4003), 47 states have internal predecessors, (4003), 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 16:19:38,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 307.0) internal successors, (14736), 48 states have internal predecessors, (14736), 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 16:19:38,907 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 307.0) internal successors, (14736), 48 states have internal predecessors, (14736), 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 16:19:38,907 INFO L175 Difference]: Start difference. First operand has 328 places, 3411 transitions, 89633 flow. Second operand 47 states and 4003 transitions. [2023-11-17 16:19:38,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 3841 transitions, 104726 flow [2023-11-17 16:19:57,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 3841 transitions, 103189 flow, removed 604 selfloop flow, removed 5 redundant places. [2023-11-17 16:19:57,222 INFO L231 Difference]: Finished difference. Result has 379 places, 3578 transitions, 97070 flow [2023-11-17 16:19:57,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=88098, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1619, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=97070, PETRI_PLACES=379, PETRI_TRANSITIONS=3578} [2023-11-17 16:19:57,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 347 predicate places. [2023-11-17 16:19:57,225 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 3578 transitions, 97070 flow [2023-11-17 16:19:57,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 80.15384615384616) internal successors, (2084), 26 states have internal predecessors, (2084), 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 16:19:57,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:19:57,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:19:57,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 16:19:57,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:19:57,431 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 16:19:57,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:19:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash 932843354, now seen corresponding path program 5 times [2023-11-17 16:19:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:19:57,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180888733] [2023-11-17 16:19:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:19:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:19:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:19:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:19:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:19:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180888733] [2023-11-17 16:19:58,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180888733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:19:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166214368] [2023-11-17 16:19:58,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:19:58,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:19:58,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:19:58,061 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:19:58,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 16:19:58,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:19:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:19:58,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 16:19:58,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:19:58,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:19:58,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-11-17 16:19:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:19:58,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:19:58,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:19:58,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-11-17 16:19:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:19:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166214368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:19:58,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:19:58,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-11-17 16:19:58,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725036091] [2023-11-17 16:19:58,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:19:58,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:19:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:19:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:19:58,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:19:58,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 307 [2023-11-17 16:19:58,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 3578 transitions, 97070 flow. Second operand has 25 states, 25 states have (on average 84.32) internal successors, (2108), 25 states have internal predecessors, (2108), 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 16:19:58,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:19:58,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 307 [2023-11-17 16:19:58,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:20:24,776 INFO L124 PetriNetUnfolderBase]: 26676/37779 cut-off events. [2023-11-17 16:20:24,776 INFO L125 PetriNetUnfolderBase]: For 1048606/1048606 co-relation queries the response was YES. [2023-11-17 16:20:25,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401799 conditions, 37779 events. 26676/37779 cut-off events. For 1048606/1048606 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 238592 event pairs, 2994 based on Foata normal form. 2/37781 useless extension candidates. Maximal degree in co-relation 400989. Up to 29724 conditions per place. [2023-11-17 16:20:25,803 INFO L140 encePairwiseOnDemand]: 294/307 looper letters, 3714 selfloop transitions, 1412 changer transitions 2/5128 dead transitions. [2023-11-17 16:20:25,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 5128 transitions, 144253 flow [2023-11-17 16:20:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 16:20:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 16:20:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2919 transitions. [2023-11-17 16:20:25,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29712947882736157 [2023-11-17 16:20:25,806 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2919 transitions. [2023-11-17 16:20:25,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2919 transitions. [2023-11-17 16:20:25,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:20:25,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2919 transitions. [2023-11-17 16:20:25,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 91.21875) internal successors, (2919), 32 states have internal predecessors, (2919), 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 16:20:25,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 307.0) internal successors, (10131), 33 states have internal predecessors, (10131), 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 16:20:25,817 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 307.0) internal successors, (10131), 33 states have internal predecessors, (10131), 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 16:20:25,818 INFO L175 Difference]: Start difference. First operand has 379 places, 3578 transitions, 97070 flow. Second operand 32 states and 2919 transitions. [2023-11-17 16:20:25,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 5128 transitions, 144253 flow [2023-11-17 16:20:54,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 5128 transitions, 142751 flow, removed 492 selfloop flow, removed 25 redundant places. [2023-11-17 16:20:54,466 INFO L231 Difference]: Finished difference. Result has 399 places, 4523 transitions, 123996 flow [2023-11-17 16:20:54,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=95945, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=647, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=123996, PETRI_PLACES=399, PETRI_TRANSITIONS=4523} [2023-11-17 16:20:54,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 367 predicate places. [2023-11-17 16:20:54,469 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 4523 transitions, 123996 flow [2023-11-17 16:20:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 84.32) internal successors, (2108), 25 states have internal predecessors, (2108), 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 16:20:54,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:20:54,470 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] [2023-11-17 16:20:54,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-17 16:20:54,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:20:54,675 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 16:20:54,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:20:54,675 INFO L85 PathProgramCache]: Analyzing trace with hash 398809773, now seen corresponding path program 6 times [2023-11-17 16:20:54,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:20:54,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113081281] [2023-11-17 16:20:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:20:54,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:20:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:20:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:20:55,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:20:55,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113081281] [2023-11-17 16:20:55,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113081281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:20:55,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278448976] [2023-11-17 16:20:55,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:20:55,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:20:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:20:55,164 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:20:55,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 16:20:55,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:20:55,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:20:55,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-17 16:20:55,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:20:55,281 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 60 treesize of output 58 [2023-11-17 16:20:55,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:20:55,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:20:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:20:55,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:20:55,441 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_650 (Array Int Int))) (= |c_thread2Thread1of1ForFork0_~tmp~1#1| (+ c_~res1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_650) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))))) is different from false [2023-11-17 16:20:55,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:20:55,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 38 [2023-11-17 16:20:55,457 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 17 treesize of output 11 [2023-11-17 16:20:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:20:55,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278448976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:20:55,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:20:55,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-11-17 16:20:55,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209623065] [2023-11-17 16:20:55,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:20:55,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:20:55,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:20:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:20:55,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=304, Unknown=6, NotChecked=36, Total=420 [2023-11-17 16:20:55,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:20:55,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 4523 transitions, 123996 flow. Second operand has 21 states, 21 states have (on average 96.04761904761905) internal successors, (2017), 21 states have internal predecessors, (2017), 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 16:20:55,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:20:55,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:20:55,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:21:30,153 INFO L124 PetriNetUnfolderBase]: 27241/38594 cut-off events. [2023-11-17 16:21:30,153 INFO L125 PetriNetUnfolderBase]: For 1152370/1152370 co-relation queries the response was YES. [2023-11-17 16:21:30,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428066 conditions, 38594 events. 27241/38594 cut-off events. For 1152370/1152370 co-relation queries the response was YES. Maximal size of possible extension queue 1837. Compared 244992 event pairs, 3194 based on Foata normal form. 1/38595 useless extension candidates. Maximal degree in co-relation 426789. Up to 35387 conditions per place. [2023-11-17 16:21:31,205 INFO L140 encePairwiseOnDemand]: 296/307 looper letters, 4228 selfloop transitions, 601 changer transitions 1/4830 dead transitions. [2023-11-17 16:21:31,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 4830 transitions, 140742 flow [2023-11-17 16:21:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:21:31,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:21:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1346 transitions. [2023-11-17 16:21:31,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3372588323728389 [2023-11-17 16:21:31,207 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1346 transitions. [2023-11-17 16:21:31,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1346 transitions. [2023-11-17 16:21:31,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:21:31,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1346 transitions. [2023-11-17 16:21:31,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.53846153846153) internal successors, (1346), 13 states have internal predecessors, (1346), 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 16:21:31,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:21:31,211 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 307.0) internal successors, (4298), 14 states have internal predecessors, (4298), 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 16:21:31,211 INFO L175 Difference]: Start difference. First operand has 399 places, 4523 transitions, 123996 flow. Second operand 13 states and 1346 transitions. [2023-11-17 16:21:31,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 4830 transitions, 140742 flow [2023-11-17 16:22:06,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 4830 transitions, 137124 flow, removed 1672 selfloop flow, removed 8 redundant places. [2023-11-17 16:22:06,335 INFO L231 Difference]: Finished difference. Result has 407 places, 4598 transitions, 124831 flow [2023-11-17 16:22:06,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=120808, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=124831, PETRI_PLACES=407, PETRI_TRANSITIONS=4598} [2023-11-17 16:22:06,339 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 375 predicate places. [2023-11-17 16:22:06,339 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 4598 transitions, 124831 flow [2023-11-17 16:22:06,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 96.04761904761905) internal successors, (2017), 21 states have internal predecessors, (2017), 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 16:22:06,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:22:06,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:22:06,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-17 16:22:06,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:22:06,547 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 16:22:06,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:22:06,547 INFO L85 PathProgramCache]: Analyzing trace with hash 237842573, now seen corresponding path program 7 times [2023-11-17 16:22:06,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:22:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930926478] [2023-11-17 16:22:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:22:06,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:22:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:22:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:22:07,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:22:07,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930926478] [2023-11-17 16:22:07,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930926478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:22:07,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206966292] [2023-11-17 16:22:07,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:22:07,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:22:07,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:22:07,052 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:22:07,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-17 16:22:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:22:07,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-17 16:22:07,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:22:07,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 16:22:07,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:22:07,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 16:22:07,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:22:07,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:22:07,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:22:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:22:07,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:22:07,562 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_686 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) c_~A~0.base) c_~A~0.offset)) (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) c_~res1~0))) is different from false [2023-11-17 16:22:07,593 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_685 (Array Int Int)) (v_ArrVal_686 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_685))) (= (+ c_~res1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) c_~A~0.base) c_~A~0.offset) c_~res2~0)))) is different from false [2023-11-17 16:22:07,602 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_685 (Array Int Int)) (v_ArrVal_684 (Array Int Int)) (v_ArrVal_686 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_684) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_685))) (= (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (+ c_~res1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-11-17 16:22:07,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:22:07,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2023-11-17 16:22:07,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1278 treesize of output 1198 [2023-11-17 16:22:07,618 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 124 treesize of output 116 [2023-11-17 16:22:07,620 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 116 treesize of output 112 [2023-11-17 16:22:07,624 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 56 treesize of output 54 [2023-11-17 16:22:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-17 16:22:07,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206966292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:22:07,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:22:07,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-11-17 16:22:07,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981264634] [2023-11-17 16:22:07,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:22:07,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-17 16:22:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:22:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-17 16:22:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=487, Unknown=15, NotChecked=144, Total=756 [2023-11-17 16:22:07,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:22:07,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 4598 transitions, 124831 flow. Second operand has 28 states, 28 states have (on average 95.75) internal successors, (2681), 28 states have internal predecessors, (2681), 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 16:22:07,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:22:07,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:22:07,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:22:11,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:22:11,352 WARN L854 $PredicateComparison]: unable to prove that (and (= c_~res2~0 c_~res1~0) (forall ((v_ArrVal_686 (Array Int Int))) (= (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~res1~0) (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) c_~A~0.base) c_~A~0.offset))))) is different from false [2023-11-17 16:22:51,000 INFO L124 PetriNetUnfolderBase]: 29162/41403 cut-off events. [2023-11-17 16:22:51,000 INFO L125 PetriNetUnfolderBase]: For 1234461/1234461 co-relation queries the response was YES. [2023-11-17 16:22:52,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456031 conditions, 41403 events. 29162/41403 cut-off events. For 1234461/1234461 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 265823 event pairs, 3144 based on Foata normal form. 2/41405 useless extension candidates. Maximal degree in co-relation 455063. Up to 34954 conditions per place. [2023-11-17 16:22:52,336 INFO L140 encePairwiseOnDemand]: 286/307 looper letters, 4149 selfloop transitions, 1126 changer transitions 2/5277 dead transitions. [2023-11-17 16:22:52,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 5277 transitions, 150536 flow [2023-11-17 16:22:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:22:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:22:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1575 transitions. [2023-11-17 16:22:52,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34201954397394135 [2023-11-17 16:22:52,338 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1575 transitions. [2023-11-17 16:22:52,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1575 transitions. [2023-11-17 16:22:52,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:22:52,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1575 transitions. [2023-11-17 16:22:52,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 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 16:22:52,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 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 16:22:52,344 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 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 16:22:52,344 INFO L175 Difference]: Start difference. First operand has 407 places, 4598 transitions, 124831 flow. Second operand 15 states and 1575 transitions. [2023-11-17 16:22:52,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 5277 transitions, 150536 flow [2023-11-17 16:23:30,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 5277 transitions, 149718 flow, removed 241 selfloop flow, removed 5 redundant places. [2023-11-17 16:23:30,613 INFO L231 Difference]: Finished difference. Result has 423 places, 4917 transitions, 136960 flow [2023-11-17 16:23:30,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=124013, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=867, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=136960, PETRI_PLACES=423, PETRI_TRANSITIONS=4917} [2023-11-17 16:23:30,617 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2023-11-17 16:23:30,617 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 4917 transitions, 136960 flow [2023-11-17 16:23:30,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 95.75) internal successors, (2681), 28 states have internal predecessors, (2681), 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 16:23:30,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:23:30,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:23:30,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-17 16:23:30,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:30,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 16:23:30,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:23:30,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1894106961, now seen corresponding path program 8 times [2023-11-17 16:23:30,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:23:30,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910739987] [2023-11-17 16:23:30,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:23:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:23:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:23:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:23:31,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:23:31,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910739987] [2023-11-17 16:23:31,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910739987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:23:31,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093021518] [2023-11-17 16:23:31,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:23:31,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:23:31,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:23:31,306 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:23:31,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-17 16:23:31,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:23:31,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:23:31,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-17 16:23:31,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:23:31,422 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 120 treesize of output 116 [2023-11-17 16:23:31,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:23:31,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:23:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:23:31,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:23:31,575 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_722 (Array Int Int))) (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_722) c_~A~0.base) (+ c_~A~0.offset (* |c_thread2Thread1of1ForFork0_~i~1#1| 4))) c_~res2~0) c_~res1~0)) is different from false [2023-11-17 16:23:31,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:23:31,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 38 [2023-11-17 16:23:31,587 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 17 treesize of output 11 [2023-11-17 16:23:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:23:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093021518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:23:31,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:23:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2023-11-17 16:23:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593708976] [2023-11-17 16:23:31,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:23:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:23:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:23:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:23:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=274, Unknown=1, NotChecked=34, Total=380 [2023-11-17 16:23:31,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 307 [2023-11-17 16:23:31,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 4917 transitions, 136960 flow. Second operand has 20 states, 20 states have (on average 96.1) internal successors, (1922), 20 states have internal predecessors, (1922), 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 16:23:31,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:23:31,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 307 [2023-11-17 16:23:31,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:24:18,374 INFO L124 PetriNetUnfolderBase]: 29472/41904 cut-off events. [2023-11-17 16:24:18,374 INFO L125 PetriNetUnfolderBase]: For 1335898/1335898 co-relation queries the response was YES. [2023-11-17 16:24:19,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482573 conditions, 41904 events. 29472/41904 cut-off events. For 1335898/1335898 co-relation queries the response was YES. Maximal size of possible extension queue 1979. Compared 270000 event pairs, 3190 based on Foata normal form. 1/41905 useless extension candidates. Maximal degree in co-relation 481586. Up to 34888 conditions per place. [2023-11-17 16:24:19,693 INFO L140 encePairwiseOnDemand]: 296/307 looper letters, 4123 selfloop transitions, 1229 changer transitions 3/5355 dead transitions. [2023-11-17 16:24:19,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 5355 transitions, 156346 flow [2023-11-17 16:24:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:24:19,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:24:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1572 transitions. [2023-11-17 16:24:19,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34136807817589576 [2023-11-17 16:24:19,696 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1572 transitions. [2023-11-17 16:24:19,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1572 transitions. [2023-11-17 16:24:19,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:24:19,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1572 transitions. [2023-11-17 16:24:19,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 104.8) internal successors, (1572), 15 states have internal predecessors, (1572), 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 16:24:19,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 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 16:24:19,702 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 307.0) internal successors, (4912), 16 states have internal predecessors, (4912), 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 16:24:19,702 INFO L175 Difference]: Start difference. First operand has 423 places, 4917 transitions, 136960 flow. Second operand 15 states and 1572 transitions. [2023-11-17 16:24:19,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 5355 transitions, 156346 flow [2023-11-17 16:24:59,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 5355 transitions, 154446 flow, removed 769 selfloop flow, removed 5 redundant places. [2023-11-17 16:24:59,191 INFO L231 Difference]: Finished difference. Result has 433 places, 4986 transitions, 140301 flow [2023-11-17 16:24:59,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=135260, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=140301, PETRI_PLACES=433, PETRI_TRANSITIONS=4986} [2023-11-17 16:24:59,196 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2023-11-17 16:24:59,196 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 4986 transitions, 140301 flow [2023-11-17 16:24:59,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 96.1) internal successors, (1922), 20 states have internal predecessors, (1922), 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 16:24:59,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:24:59,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:24:59,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-17 16:24:59,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-17 16:24:59,402 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 16:24:59,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:24:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash -203858896, now seen corresponding path program 6 times [2023-11-17 16:24:59,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:24:59,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942456178] [2023-11-17 16:24:59,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:24:59,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:24:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:25:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:25:00,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:25:00,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942456178] [2023-11-17 16:25:00,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942456178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:25:00,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627180971] [2023-11-17 16:25:00,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:25:00,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:25:00,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:25:00,029 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:25:00,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-17 16:25:00,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 16:25:00,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:25:00,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 16:25:00,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:25:00,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:25:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:00,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:25:00,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:25:00,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2023-11-17 16:25:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:25:00,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627180971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:25:00,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:25:00,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 23 [2023-11-17 16:25:00,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839574200] [2023-11-17 16:25:00,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:25:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:25:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:25:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:25:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:25:00,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 307 [2023-11-17 16:25:00,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 4986 transitions, 140301 flow. Second operand has 25 states, 25 states have (on average 80.2) internal successors, (2005), 25 states have internal predecessors, (2005), 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 16:25:00,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:25:00,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 307 [2023-11-17 16:25:00,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-17 16:25:18,825 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 16:25:18,825 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:25:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-17 16:25:19,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 16:25:19,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-17 16:25:19,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-17 16:25:19,274 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 78/307 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 165273 conditions, 14010 events (9909/14009 cut-off events. For 474661/474661 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 90749 event pairs, 887 based on Foata normal form. 0/15963 useless extension candidates. Maximal degree in co-relation 165103. Up to 9320 conditions per place.). [2023-11-17 16:25:19,278 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 16:25:19,279 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 16:25:19,281 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 16:25:19,281 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 1, 1, 1, 1, 1] [2023-11-17 16:25:19,284 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:25:19,284 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:25:19,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:25:19 BasicIcfg [2023-11-17 16:25:19,288 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:25:19,299 INFO L158 Benchmark]: Toolchain (without parser) took 512929.54ms. Allocated memory was 319.8MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 268.0MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-11-17 16:25:19,299 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 186.6MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:25:19,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.95ms. Allocated memory is still 319.8MB. Free memory was 267.7MB in the beginning and 255.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 16:25:19,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.81ms. Allocated memory is still 319.8MB. Free memory was 255.8MB in the beginning and 253.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:25:19,300 INFO L158 Benchmark]: Boogie Preprocessor took 32.47ms. Allocated memory is still 319.8MB. Free memory was 253.4MB in the beginning and 251.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:25:19,300 INFO L158 Benchmark]: RCFGBuilder took 769.16ms. Allocated memory is still 319.8MB. Free memory was 251.6MB in the beginning and 280.3MB in the end (delta: -28.7MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-11-17 16:25:19,300 INFO L158 Benchmark]: TraceAbstraction took 511817.13ms. Allocated memory was 319.8MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 279.8MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2023-11-17 16:25:19,306 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 186.6MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.95ms. Allocated memory is still 319.8MB. Free memory was 267.7MB in the beginning and 255.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.81ms. Allocated memory is still 319.8MB. Free memory was 255.8MB in the beginning and 253.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.47ms. Allocated memory is still 319.8MB. Free memory was 253.4MB in the beginning and 251.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 769.16ms. Allocated memory is still 319.8MB. Free memory was 251.6MB in the beginning and 280.3MB in the end (delta: -28.7MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 511817.13ms. Allocated memory was 319.8MB in the beginning and 5.4GB in the end (delta: 5.1GB). Free memory was 279.8MB in the beginning and 3.6GB in the end (delta: -3.3GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 146 PlacesBefore, 32 PlacesAfterwards, 148 TransitionsBefore, 26 TransitionsAfterwards, 1950 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 145 TotalNumberOfCompositions, 2287 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1926, independent: 1880, independent conditional: 0, independent unconditional: 1880, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1300, independent: 1286, independent conditional: 0, independent unconditional: 1286, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1300, independent: 1286, independent conditional: 0, independent unconditional: 1286, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1926, independent: 594, independent conditional: 0, independent unconditional: 594, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 1300, unknown conditional: 0, unknown unconditional: 1300] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 78/307 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 165273 conditions, 14010 events (9909/14009 cut-off events. For 474661/474661 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 90749 event pairs, 887 based on Foata normal form. 0/15963 useless extension candidates. Maximal degree in co-relation 165103. Up to 9320 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 78/307 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 165273 conditions, 14010 events (9909/14009 cut-off events. For 474661/474661 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 90749 event pairs, 887 based on Foata normal form. 0/15963 useless extension candidates. Maximal degree in co-relation 165103. Up to 9320 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 78/307 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 165273 conditions, 14010 events (9909/14009 cut-off events. For 474661/474661 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 90749 event pairs, 887 based on Foata normal form. 0/15963 useless extension candidates. Maximal degree in co-relation 165103. Up to 9320 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 78/307 universal loopers) in iteration 25,while PetriNetUnfolder was constructing finite prefix that currently has 165273 conditions, 14010 events (9909/14009 cut-off events. For 474661/474661 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 90749 event pairs, 887 based on Foata normal form. 0/15963 useless extension candidates. Maximal degree in co-relation 165103. Up to 9320 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 190 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: 511.7s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 482.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 42 mSolverCounterUnknown, 3229 SdHoareTripleChecker+Valid, 12.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3229 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 10.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1368 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 164 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19218 IncrementalHoareTripleChecker+Invalid, 20792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 164 mSolverCounterUnsat, 0 mSDtfsCounter, 19218 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1408 GetRequests, 744 SyntacticMatches, 17 SemanticMatches, 647 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 5453 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140301occurred in iteration=24, InterpolantAutomatonStates: 390, 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: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 1491 ConstructedInterpolants, 24 QuantifiedInterpolants, 12057 SizeOfPredicates, 244 NumberOfNonLiveVariables, 4711 ConjunctsInSsa, 542 ConjunctsInUnsatCore, 67 InterpolantComputations, 10 PerfectInterpolantSequences, 52/171 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